US20050102929A1 - Seal for a loading dock bumper - Google Patents
Seal for a loading dock bumper Download PDFInfo
- Publication number
- US20050102929A1 US20050102929A1 US10/433,636 US43363604A US2005102929A1 US 20050102929 A1 US20050102929 A1 US 20050102929A1 US 43363604 A US43363604 A US 43363604A US 2005102929 A1 US2005102929 A1 US 2005102929A1
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- US
- United States
- Prior art keywords
- bumper
- seal
- assembly
- vehicle
- front face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/008—Dock- or bumper-seals
Abstract
At a loading dock for a truck, a compressible bumper seal extends across the front face of a dock bumper to help seal an air gap that may otherwise exist between the bumper face and the rear of the truck. Without the seal, the gap may be created by the truck stopping just short of reaching the bumper or by the truck “bouncing off” the bumper before stopping. If left unsealed, such a gap can create a draft into a building that has the loading dock.
Description
- 1. Field of the Invention
- The subject invention generally pertains to loading docks, and more specifically to a device that helps seal an air gap that may exist between a rear surface of a vehicle and the front face of a bumper that is attached to the dock.
- 2. Description of Related Art
- A typical loading dock of a building includes an exterior doorway with an elevated platform for loading and unloading vehicles, such as trucks and trailers. To compensate for height differences between the loading dock platform and an adjacent bed of a truck or trailer, many loading docks have a dock leveler. A typical dock leveler includes a deck, also known as a ramp or dockboard, which is pivotally hinged along its back edge to vary the height of its front edge. An extension plate, or lip, extends outward from the deck's front edge to span the gap between the rear of the truck bed and the front edge of the deck. The lip is usually moveable between a stored position to an extended, operative position. In the extended, operative position, the lip extends from the deck's front edge and rests upon the truck bed to form a bridge between the two. This allows personnel and material handling equipment to readily move on and off the vehicle during loading and unloading operations.
- To protect the building and the dock leveler from direct vehicle impact, loading docks often include bumpers. Bumpers also help establish a predetermined minimum distance between the rear of the vehicle and the dock leveler, so the dock leveler can first raise and then lower its lip upon the rear of the vehicle. Bumpers are usually installed near the bottom of the doorway, adjacent either side of the dock leveler lip and protrude a few inches out from the face of the dock, where they can be abutted by the rear of the vehicle.
- To help block out rain, snow and outside air from entering the building through air gaps between the back of the vehicle and the exterior face of the building, usually either a dock seal or a dock shelter is installed around the perimeter of the doorway.
- Dock shelters often have projecting members that protrude outwardly from the face of the building and run generally along the top and lateral sides of the doorway. From a protruding edge of the projecting members, a top extending member and two laterally extending members may extend inward and generally parallel to the building face to help seal against the truck's top and sides, respectively. The laterally extending members are often made of a fabric or flexible foam. Two inner bottom corners of the dock shelter at the lower back sides of the truck are often partially sealed by draft pads attached to the lower ends of the projecting members. The dock leveler lip resting upon the rear of the vehicle is often relied upon to seal most of the doorway's lower edge.
- Typical dock seals comprise a resiliently compressible foam core protected by a fabric outer cover. They are usually mounted to the face of a building, along the top and both sides of the doorway. With dock seals, sealing is provided by backing the truck directly up against the seal. The seal then compressively conforms to the shape of the truck's rear edges. The foam core provides the necessary compliance and resilience to repeatedly conform to the shape of various trucks, while the outer cover protects the foam core from dirt, water and abrasion. As with dock shelters, dock seals also rely on the dock leveler lip to seal most of the doorway's lower edge.
- With conventional dock seals and shelters, an air gap may still exist between the rear of the vehicle and the front face of the bumpers. This can occur when a vehicle backing into the dock “bounces off” the bumpers or simply stops just short of reaching the bumpers. Such an air gap can be a few inches across and can allow a significant air draft into the building.
- A gap can also exist between a bumper and the underside of a dock shelter or the underside of a dock seal. For dock seals, such a gap may be due horizontal or vertical displacement between the bumper and the portion of the dock seal that runs along the vertical edge of the doorway. For dock shelters, the gap can be due to horizontal or vertical displacement between the bumper and dock shelter's draft pad.
- In some embodiments, a relatively soft bumper seal overlays the front face of loading dock bumper.
- In some embodiments, the bumper seal includes a foam core that is softer or more compressible than the bumper.
- In some embodiments, the foam core is at least partially covered by a pliable, weather resistant cover.
- In some embodiments, the weather resistant cover is protected by a tough slipcover that can be replaced when necessary.
- In some embodiments, the slipcover is stiffer than the weather resistant cover.
- In some embodiments, a structure of flexible sheets provides a collapsible bumper seal that overlays the front face of a loading dock bumper.
- In some embodiments, the flexible sheets comprise a plurality of tubes.
- In some embodiments, the bumper seal is mounted adjacent to the bumper.
- In some embodiments, the bumper seal is attached to a vertical face of a loading dock.
- In some embodiments, the bumper seal is attached directly to the bumper.
- In some embodiments, the bumper seal comprises a face-sealing member and a side-sealing member, wherein the face-sealing member seals a gap between the bumper and the rear of a vehicle, and the side-sealing member seals a gap between the bumper and a lower portion of a dock seal or a dock shelter's draft pad.
- In some embodiments of bumper seal that include a compressible or collapsible core with a weather resistant cover and a semi-rigid slipcover over that, a protective semi-rigid sheet of material is inserted between the slipcover and the core to help evenly distribute vehicle-imparted forces across the core.
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FIG. 1 is a perspective view of a loading dock that includes a bumper seal. -
FIG. 2 is similar toFIG. 1 , but showing a truck having backed into the dock. -
FIG. 3 is similar toFIG. 1 , but showing a bumper seal being installed over the face of a bumper, wherein the seal's slipcover is partially pealed back to show a mounting bracket. -
FIG. 4 is a cross-sectional view taken along line 4-4 ofFIG. 1 . -
FIG. 5 is similar toFIG. 4 , but with the vehicle pressing hard against the bumper. -
FIG. 6 is similar toFIG. 5 , but with the vehicle having moved slightly away from the bumper. -
FIG. 7 is a perspective view of a bumper seal's core. -
FIG. 8 is a perspective view of the core ofFIG. 7 covered by a weather resistant cover. -
FIG. 9 is a perspective view of the core and cover ofFIG. 8 with the covered core being further covered by a tough slipcover. -
FIG. 10 is a perspective view of an uncovered bumper seal whose core is collapsible. -
FIG. 11 is similar toFIG. 10 , but with the bumper seal protected by a slipcover. -
FIG. 12 is a perspective view of another bumper seal with a collapsible core. -
FIG. 13 is a schematic top view of one embodiment of a bumper seal that includes a face-sealing member and a side-sealing member. -
FIG. 14 is similar toFIG. 8 , but of another embodiment. -
FIG. 15 is similar toFIG. 9 , but of another embodiment. -
FIGS. 16, 17 and 18 correspond respectively toFIGS. 4, 5 and 6 and illustrate another embodiment where a bumper seal attaches directly to a bumper. -
FIG. 19 is a front view of a bumper seal that includes a side-sealing member for sealing a vertical gap. -
FIG. 20 is a front view of the bumper seal ofFIG. 19 , but showing the side-sealing member sealing a horizontal gap. -
FIG. 21 is a similar toFIG. 19 , but showing the bumper seal sealing a vertical gap between a bumper and a dock shelter. -
FIG. 22 is similar toFIG. 20 , but showing the bumper seal sealing a horizontal gap between a bumper and a dock shelter. - Referring to
FIGS. 1 and 2 , aloading dock 10 comprises anelevated doorway 12 of abuilding 14. Avehicle 16, such a truck or trailer, can move in arearward direction 18 intodock 10 to load or unload cargo throughdoorway 12. In this example, aconventional dock leveler 20 with anextendible lip 22 is used to bridge the gap between the lower edge ofdoorway 12 and a lower rear edge ofvehicle 16. - To protect
building 14 anddock leveler 20 from direct vehicle impact,loading dock 10 is provided with one or more shock-absorbingbumpers 24 that protrude about four to six inches out from aface 26 of the dock.Bumpers 24 also help establish a predetermined minimum distance between the vehicle'sback edge 28 and the front ofdock leveler 20, sodock leveler 20 can first lift and thenlower lip 22 upon the bed ofvehicle 16.Bumpers 24 can be installed near the bottom ofdoorway 12, adjacent either side ofdock leveler lip 22, where the bumpers can be abutted by the rear ofvehicle 16. Alternatively,bumpers 24 can be attached or coupled to dockleveler 20 and in some cases may even be movable between retracted and operative positions. - To help block out rain, snow and outside air from entering
building 14 through air gaps between the exterior face of building 14 and the upper and two side edges along the rear ofvehicle 16, adock seal 30 may be installed along the perimeter ofdoorway 12. For example,dock seal 30 includes twovertical side pads 32 and ahead pad 34, which compressively conform to the shape of a vehicle's rear edges as the vehicle backs up againstpads lip 22 extending out over the bed oftruck 16 can be used to help cover the gap adjacent the rear lower edge ofvehicle 16. In cases where a loading dock does not have a dock leveler, a lower pad may be installed along the lower edge of the doorway to help seal gaps in that area. The subject invention does not have to be used in combination with a dock leveler. - Sometimes,
vehicle 16 may stop without itsrear edge 28 tightly up against afront face 34 of the bumpers. For instance,vehicle 16 may “bounce off” the bumpers before actually stopping. This can create an air gap between the vehicle'srear edge 28 and the front face of the bumpers. - To help seal such an air gap, a
bumper seal 36 having a compressible or collapsible face-sealingmember 38 can be installed in front of the bumpers, as shown inFIGS. 3 and 13 . The actual method of mounting can vary, as face-sealingmember 38 can be mounted directly to the bumper, or face-sealingmember 38 may be associated with additional mounting structure. For example, face-sealingmember 38 itself can comprise an entire bumper seal as depicted inFIGS. 16-18 , or face sealingmember 38 may be part of thebumper seal 36 that also includes a side-sealing member 51 (seeFIG. 13 ), wherein side-sealingmember 51 helps in the mounting offace member 38, as depicted inFIGS. 7-9 . Arear section 35 ofseal 36 engagesfront face 34 ofbumper 24, afront section 37 is adapted to be engaged byvehicle 16, and a central section 39 (which is more compressible than bumper 24) is betweensections vehicle 16 backs intodock 10 and bounces offbumpers 24,bumper seal 36 can respond in the sequence shown inFIGS. 4, 5 and 6. InFIG. 4 , the face-sealingmember 38 ofbumper seal 36 is in a normally expanded state asvehicle 16 backs towardbumper 24. InFIG. 5 ,vehicle 16 tightly compresses face-sealingmember 38 ofseal 36 between the vehicle'srear edge 28 and the bumper'sfront face 34. The impact ofvehicle 16 is transmitted tobumper 24, which may compress bumper 24 a certain amount as the bumper absorbs at least some of the impact. However, face-sealingmember 38 is softer or more compressible thanbumper 24, so seal 36 is compressed to a much greater extent asvehicle 16 tightly compressesseal 36 between the vehicle'srear edge 28 and the bumper'sfront face 34. Ifvehicle 16 bounces away frombumper 24, as shown inFIG. 6 , seal 36 may expand to fill the gap betweenbumper 24 andvehicle 16. - To mount face-sealing
member 38,seal 36 can be constructed as shown inFIGS. 7, 8 and 9 to include a side-sealingmember 51 that also mounts the face-sealing memberadjacent bumper 24.FIG. 7 showsbumper seal 36 having acompressible core 40 adjacent a mounting plate, such as awood backer 43.Backer 43 provides structure that enables a bracket 42 (FIG. 3 ) to attachseal 36 to the face of building 14 and to thus properly locate face-sealingmember 38 over the front face ofbumper 24. In some embodiments,core 40 comprises one or more compressible foam pads, such aspads Pad 44 helps seal betweenbacker 43 and a bumper mounting bracket 50 (which connectsbumper 24 to building 14, as shown inFIG. 4 ),pad 48 helps seal between the bumper'sfront face 34 and the vehicle'srear edge 28, andpad 46 helps ensure that the vehicle's impact is transmitted more tobumper 24 than tobacker 43. - To help protect core 40 from dirt and weather, or to help hold various parts of
core 40 together, core 40 can be at least partially covered by a weatherresistant cover 52, as shown inFIG. 8 . The term, “weather resistant” refers to any material that provides at least some shield against wind or rain.Cover 52 may consist of a pliable vinyl or some other type of fabric that is sufficiently pliable to allowcore 40 to be compressed byvehicle 16.Cover 52 preferably includes some venting feature (e.g., a round hole at the bottom of bumper seal 36) that allows air to enter and escape from withincover 52 ascore 40 is compressed or decompressed. - To help protect
cover 52 from being cut, excessively worn or otherwise damaged by the impact ofvehicle 16, atough slipcover 54 extends over areas ofcover 52 that are most susceptible to damage.Slipcover 54 can be made of PVC or a similar material that is tougher and less pliable thancover 52. In some embodiments,slipcover 54 is made of a polyethylene, cross-linked, closed-cell foam that is formed, compressed and heated to provide a desired density and rigidity. In some cases, the rigidity ofslipcover 52 may vary, with certain areas ofslipcover 52 being more rigid than others. For example,front section 37 may be more rigid than other areas to help evenly distribute the compressive forces thatvehicle 16 may exert againstcore 40. Preferably,slipcover 54 is readily replaceable by wrapping the slipcover aroundcore 40 andcover 52, as shown inFIG. 9 . A loopedend 56 ofslipcover 54 can be sewn, bonded, welded or otherwise connected to itself at aseam 58, and anotherend 60 of the slipcover can be stapled, screwed, hooked or otherwise attached tobacker 43.End 60 can be clamped betweenbracket 42 andbacker 43, or apart 62 ofend 60can overlay bracket 42 as shown inFIG. 4 .Slipcover 54 can be replaced (or switched from a righthand bumper seal to a lefthand bumper seal) by detachingend 60 frombacker 43 and slipping loopedend 56 offcore 40. - Alternate, but similar, embodiments of a bumper seal are shown in
FIGS. 10, 11 and 12. InFIGS. 10 and 11 , abumper seal 64 includes acollapsible core 66 having a collapsible structure made of a flexible sheet of material, such as PVC. The actual structure can be of various shapes and configurations. For example, the flexible sheets of material can be in the form oftubes 68 that resiliently flatten out upon being crushed betweenbumper 24 and the vehicle'srear edge 28. Accordingly, the volume ofcore 66 that extends inward (to the left in the sense ofFIG. 10 ) frompads member 38′ according to this embodiment. In some cases,backer 43 andpads cover 68 similar to cover 52, andslipcover 54 can help protectcore 66. -
FIG. 12 shows abumper seal 70 that includes acollapsible core 72 made of flexible sheets of material that form a series of foldable boxes. The boxes resiliently fold into a flattened shape uponvehicle 16 backing up againstbumper 24.Seal 70 may be provided withcover 68 and/orslipcover 54. - Referring to
FIGS. 14 and 15 , to help evenly distribute the compressive forces thatvehicle 16 may exert against core 40 (FIG. 7 ), aprotective insert 80 can be installed in front of a bumper seal's core.FIG. 14 is the same asFIG. 15 , but withslipcover 54 removed. In this example, abumper seal 36′ includesinsert 80 installed betweenslipcover 54 and core 40 (e.g., betweenslipcover 54 and cover 52).Insert 80 can be made of any semi-rigid sheet of material, such as HDPE (high density polyethylene).Insert 80 can be held in place by any suitable manner, such as by sewing, glueing, etc. - Just as
FIGS. 4, 5 and 6 illustrate in sequence the operation ofbumper seal 36, respectiveFIGS. 16, 17 and 18 illustrate the structure and an operational sequence of abumper seal 82.Bumper seal 82 comprises a face-sealingmember 84 that includes a compressible orcollapsible core 98 with apliable cover 100. Face-sealingmember 84 attaches directly to abumper 86 without the use of side-sealingmember 51 as in the previous embodiments. It should be appreciated by those skilled in the art that the actual structure ofbumper 86 andbumper seal 82 could vary widely without departing from the basic concept of mounting a face-sealing member directly to a bumper. Nonetheless, in this particular example,bumper 86 comprises a hard rubbercompressible core 88 contained within a telescoping metal housing. The housing includes onepiece 90 that can move relative to anotherpiece 92, so the twopieces core 88 under an impact ofvehicle 16.Bumper seal 82 can be attached tobumper 86 in any suitable manner to properly position face-sealingmember 84 relative to the front face ofbumper 86. For example, seal 82 may include straps ormaterial 94 that can attach tobumper 86 in any one of various ways including, but not limited to, hooking ontobumper 86, wrapping aroundbumper 86, being fastened with screws, adhesive, etc. The various means of attachment are schematically represented byelement 96. - In another embodiment, shown in
FIGS. 19 and 20 , abumper seal 102 comprises a side-sealingmember 104 that mounts a face-sealingmember 105 in proper position relative tobumper 24, and that also helps seal a gap between bumper 24 (shown in phantom behind seal 102) andvertical side pad 32 ofdock seal 30, whereinside pad 32 is just one example of a side seal disposed along a lateral edge of a doorway. Side-sealingmember 104 is shown sealing avertical gap 106 inFIG. 19 and shown sealing ahorizontal gap 108 inFIG. 20 . To achieve this capability, side-sealingmember 104 has a greater vertical extent than face-sealingmember 102. For example, one could modify the embodiment ofFIG. 7 so thatpads pad 48. Also, pad 48 could have a sectionadjacent pad 46 of a greater height as well. One would preferably makebacker 43 taller as well. This is depicted schematically inFIGS. 19 and 21 . -
FIGS. 21 and 22 are similar toFIGS. 19 and 20 respectively. However, instead ofdock seal 30, the embodiment ofFIGS. 21 and 22 have adock shelter 30′ that includes adraft pad 110.Draft pad 110 helps seal a lower inner corner ofdock shelter 30′. Further details of sample dock shelters and draft pads are disclosed in U.S. Pat. Nos. 6,014,844; 4,885,881; and 3,792,559, which are specifically incorporated by reference herein. Fordock shelter 30′,bumper seal 102 includes a face-sealingmember 105 for sealing the front face of the bumper and a side-sealingmember 104 for mountingmember 105 and that helps seal a gap betweenbumper 24 anddraft pad 110 ofvertical side seal 32′, whereinvertical side seal 32′ is just one example of a side seal disposed along a lateral edge of a doorway. Side-sealingmember 104 is shown sealing avertical gap 106′ inFIG. 21 and shown sealing ahorizontal gap 108′ inFIG. 22 . - Although the invention is described with respect to a preferred embodiment, modifications thereto will be apparent to those skilled in the art. Therefore, the scope of the invention is to be determined by reference to the claims, which follow.
Claims (33)
1. A bumper assembly for use at a loading dock for receiving an impact from a vehicle moving in a rearward direction, comprising:
a bumper installed at the loading dock and including a front face that faces away from the rearward direction, wherein the bumper is compressible to at least partially absorb the impact; and
a bumper seal extending across the front face of the bumper and being adapted to be engaged by the vehicle, wherein the bumper seal is more compressible than the bumper.
2. The bumper assembly of claim 1 , wherein the bumper seal includes a foam core.
3. The bumper assembly of claim 2 , further comprising a weather resistant cover overlaying the foam core.
4. The bumper assembly of claim 3 , further comprising a slipcover overlaying the weather resistant cover.
5. The bumper assembly of claim 4 , further comprising a protective insert disposed between the slipcover and the foam core.
6. The bumper assembly of claim 5 , wherein the protective insert is sandwiched between the slipcover and the weather resistant cover.
7. The bumper assembly of claim 5 , wherein the protective insert is a sheet of material that less pliable than the weather resistant cover.
8. The bumper assembly of claim 4 , wherein the weather resistant cover is more pliable than the slipcover.
9. The bumper assembly of claim 1 , wherein the bumper seal comprises a collapsible core that includes a flexible sheet of material.
10. The bumper assembly of claim 9 , wherein the flexible sheet of material is in the shape of a tube.
11. The bumper assembly of claim 9 , further comprising a slipcover overlaying the collapsible core.
12. The bumper assembly of claim 1 , wherein the bumper seal includes point of attachment for attaching the bumper seal at the loading dock, wherein the point of attachment is at a position that is further rearward than the front face of the bumper.
13. The bumper assembly of claim 1 , wherein the bumper seal is attached to the bumper.
14. A bumper seal for sealing a gap between a front face of a bumper and a rear surface of a vehicle, wherein the bumper is installed at a loading dock and the front face is adapted to receive an impact created by the vehicle, the bumper seal comprising:
a rear section extending across the front face of the bumper and being adapted to engage the front face of the bumper;
a front section connected to the rear section and adapted to be engaged by the rear surface of the vehicle; and
a central section interposed between the front section and the rear section, wherein the central section is more compressible than the bumper.
15. The bumper seal of claim 14 , wherein the central section includes a foam core.
16. The bumper seal of claim 14 , further comprising a weather resistant cover overlaying at least one of the rear section, the front section, and the central section.
17. The bumper seal of claim 16 , further comprising a slipcover overlaying the weather resistant cover.
18. The bumper assembly of claim 17 , further comprising a protective insert disposed between the slipcover and the foam core.
19. The bumper assembly of claim 18 , wherein the protective insert is sandwiched between the slipcover and the weather resistant cover.
20. The bumper assembly of claim 18 , wherein the protective insert is a sheet of material that less pliable than the weather resistant cover.
21. The bumper seal of claim 17 , wherein the weather resistant cover is more pliable than the slipcover.
22. The bumper seal of claim 14 , wherein the bumper seal comprises a collapsible core that includes a flexible sheet of material.
23. The bumper seal of claim 22 , wherein the flexible sheet of material is in the shape of a tube.
24. The bumper seal of claim 22 , further comprising a slipcover overlaying the collapsible core.
25. The bumper seal of claim 14 , wherein the bumper seal includes point of attachment for attaching the bumper seal at the loading dock, wherein the loading dock has a dock face that is closer to the point of attachment than the front face of the bumper.
26. A method of at least partially sealing a gap between a front face of a compressible bumper and a rear surface of a vehicle, comprising:
installing a bumper seal so that the bumper seal overlays the front face of the compressible bumper; and
compressing the bumper seal between the front face of the compressible bumper and the rear surface of the vehicle.
27. The method of claim 26 , compressing the bumper, but to a lesser extent than that which the bumper seal is compressed.
28. The method of claim 26 , further comprising attaching the bumper seal to the compressible bumper.
29. A sealing assembly for use at a doorway of a loading dock for a vehicle, the sealing assembly comprising:
a side seal disposed along a lateral edge of the doorway;
a bumper having a front face for receiving an impact of the vehicle, wherein the bumper is spaced apart from the side seal to define a gap therebetween; and
a side-sealing member bridging the gap by engaging the bumper and the side seal.
30. The sealing assembly of claim 29 , wherein the gap is a vertical gap.
31. The sealing assembly of claim 29 , wherein the gap is a horizontal gap.
32. The sealing assembly of claim 29 , further comprising a face-sealing member extending from the side-sealing member and overlaying the front face of the bumper, wherein the face-sealing member is more compressible than the bumper.
33. The sealing assembly of claim 29 , wherein the side seal includes a draft pad near the bottom of the side seal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/US2002/023723 WO2004013433A1 (en) | 2002-07-26 | 2002-07-26 | Seal for a loading dock bumper |
Publications (1)
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US20050102929A1 true US20050102929A1 (en) | 2005-05-19 |
Family
ID=31493886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/433,636 Abandoned US20050102929A1 (en) | 2002-07-26 | 2002-07-26 | Seal for a loading dock bumper |
Country Status (3)
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US (1) | US20050102929A1 (en) |
CA (1) | CA2464411A1 (en) |
WO (1) | WO2004013433A1 (en) |
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US20070151819A1 (en) * | 2005-12-29 | 2007-07-05 | Schmidt Timothy J | Loading dock bumper with two-phase resistance |
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US20090064605A1 (en) * | 2007-09-07 | 2009-03-12 | Hoffman David J | Dock seal with partially sliced foam core |
US20090077906A1 (en) * | 2007-09-24 | 2009-03-26 | 4Front Engineered Solutions, Inc. | Loading dock truck shelters |
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DE102010022057A1 (en) * | 2010-01-31 | 2011-08-04 | Nani Verladetechnik GmbH & Co. KG, 39365 | Dock seal with seal of a truck door gap |
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US20130031853A1 (en) * | 2004-11-04 | 2013-02-07 | Hoffmann David J | Flexible structures for use with dock seals and shelters |
US8510888B2 (en) | 2012-01-03 | 2013-08-20 | 4Front Engineered Solutions, Inc. | Dock leveler sealing systems |
US20140265071A1 (en) * | 2013-03-12 | 2014-09-18 | Dl Manufacturing | Loading dock bumper assembly |
US20160137436A1 (en) * | 2012-02-24 | 2016-05-19 | Charles Digmann | Face panels for loading dock seals and shelters |
US20160280478A1 (en) * | 2015-03-23 | 2016-09-29 | Denis Gleason | Multi-Seal Dock Seal |
US20170198479A1 (en) * | 2016-01-08 | 2017-07-13 | Atlas Bolt & Screw Company Llc | Compressible foam closure for metal roofs |
US10131509B2 (en) | 2015-03-23 | 2018-11-20 | Nordock, Inc. | Pit seal and 360-degree trailer seal for a telescoping lip dock leveler |
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US10329834B2 (en) | 2015-02-13 | 2019-06-25 | Amesbury Group, Inc. | Low compression-force TPE weatherseals |
US20200173519A1 (en) * | 2017-11-24 | 2020-06-04 | Dhanya R . S. | Automobile Collision Impact Reducer with Spring, Plate and Cushioning materials |
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US20130031853A1 (en) * | 2004-11-04 | 2013-02-07 | Hoffmann David J | Flexible structures for use with dock seals and shelters |
US8887447B2 (en) * | 2004-11-04 | 2014-11-18 | Rite-Hite Holding Corporation | Flexible structures for use with dock seals and shelters |
US8181759B2 (en) | 2005-12-29 | 2012-05-22 | Rite-Hite Holding Corporation | Loading dock bumper with two-phase resistance |
US20070151819A1 (en) * | 2005-12-29 | 2007-07-05 | Schmidt Timothy J | Loading dock bumper with two-phase resistance |
US7718251B2 (en) * | 2006-03-10 | 2010-05-18 | Amesbury Group, Inc. | Systems and methods for manufacturing reinforced weatherstrip |
US20100136317A1 (en) * | 2006-03-10 | 2010-06-03 | Amesbury Group | Systems and Methods for Manufacturing Reinforced Weatherstrip |
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US20110220254A1 (en) * | 2006-07-27 | 2011-09-15 | Michelin Recherche Et Technique S.A. | Process for Sheathing a Cord Using a Cord Sheathing Device |
US20080104902A1 (en) * | 2006-11-07 | 2008-05-08 | Rite-Hite Holding Corporation | Low profile support panel for a dock seal |
US8353136B2 (en) | 2006-11-07 | 2013-01-15 | Rite-Hite Holding Corporation | Low profile support panel for a dock seal |
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US20090064605A1 (en) * | 2007-09-07 | 2009-03-12 | Hoffman David J | Dock seal with partially sliced foam core |
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US8307589B2 (en) | 2008-12-12 | 2012-11-13 | 4Front Engineered Solutions, Inc. | Segmented dock seals for truck loading docks and associated systems and methods |
US8112949B2 (en) | 2008-12-12 | 2012-02-14 | 4Front Engineered Solutions, Inc. | Segmented dock seals for truck loading docks and associated systems and methods |
US20100186318A1 (en) * | 2009-01-26 | 2010-07-29 | Eungard William C | Loading dock truck and trailer seals and associated systems and methods |
US8181401B2 (en) | 2009-01-26 | 2012-05-22 | 4Front Engineered Solutions, Inc. | Loading dock truck and trailer seals and associated systems and methods |
DE102010022057A1 (en) * | 2010-01-31 | 2011-08-04 | Nani Verladetechnik GmbH & Co. KG, 39365 | Dock seal with seal of a truck door gap |
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US20160137436A1 (en) * | 2012-02-24 | 2016-05-19 | Charles Digmann | Face panels for loading dock seals and shelters |
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US20140265071A1 (en) * | 2013-03-12 | 2014-09-18 | Dl Manufacturing | Loading dock bumper assembly |
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US10676985B2 (en) | 2015-02-13 | 2020-06-09 | Amesbury Group, Inc. | Low compression-force TPE weatherseals |
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US10131509B2 (en) | 2015-03-23 | 2018-11-20 | Nordock, Inc. | Pit seal and 360-degree trailer seal for a telescoping lip dock leveler |
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US10072423B2 (en) * | 2016-01-08 | 2018-09-11 | Atlas Bolt & Screw Company Llc | Compressible foam closure for metal roofs |
US20170198479A1 (en) * | 2016-01-08 | 2017-07-13 | Atlas Bolt & Screw Company Llc | Compressible foam closure for metal roofs |
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CA2464411A1 (en) | 2004-02-12 |
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Legal Events
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Owner name: RITE-HITE HOLDING CORPORATION, WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOFFMANN, DAVID J.;BORGERDING, GARY;REEL/FRAME:015794/0824 Effective date: 20040412 |
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