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Publication numberUS3867753 A
Publication typeGrant
Publication date25 Feb 1975
Filing date18 Mar 1974
Priority date18 Mar 1974
Publication numberUS 3867753 A, US 3867753A, US-A-3867753, US3867753 A, US3867753A
InventorsMckee Carl L, Urban Ii Ellison C
Original AssigneeUs Navy
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Universal card extractor tool
US 3867753 A
Abstract
Components, such as electronic printed circuit cards of varying dimensions can be readily disconnected and removed from their housing cage by a universal extractor tool in a simple and expedient manner. This is accomplished by having the card engaging fingers adjustable to accommodate cards of varying widths and by providing a novel handle extension arrangement to enable the removal of cards of varying height.
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Description  (OCR text may contain errors)

United States Patent 1191 Urban, H et al.

1451 Feb. 25, 1975 UNIVERSAL CARD EXTRACTOR TOOL 3,110,960 11/1963 Rondash 29/278 ,4 1 1- Ellison 11, San Dwgo; 3,531,331 2113?? 1 5522221. 532 /1? g f f McKee, 151C810", both of 3,617,083 11/1971 Koppensteiner et a1 294/15 3! 3,626,575 12/1971 Greenspan 29/203 H [73] Assignee: The United States of America as represented by the Secretary of the Primary nerTh0 aS H. Eager Navy, Washington, DLC. Attorney, Agent, or FirmR. S. Sciascia; G. J. Rubens [22] Filed: Mar. 18, 1974 21 Appl. No.: 452,109 [57] ABSTRACT Components, such as electronic printed circuit cards of varying dimensions can be readily disconnected and 29/203 g figifli removed from their housing cage by a universal ex- Fieid 206 tractor tool in a simple and expedient manner. This is a c accomplished by having the card engaging fingers adjustable ctlo acco'mmpcliiate lcards of varying widths and by provi ing a nove and e extension arrangement to [56] uNlTE g gfzfrigs gzfrENTs enable the removal of cards of varying height. 3,050,841 8/1962 Esselstyn 29/268 10 Claims 5 Drawing Figures 11-.| [12 1a 1 I I I I:

l l I i 1' /2 4 1 i i 1 l 1 2 6 l i 1 1 l 14 1 I 1 11-. l -':1' 26 1. "j, I 26 1 l 1 I 14k; 1 2 24, m 1 1/14 'l l j "1 l8 1 1. UNIVERSAL CARD EXTRACTOR TOOL BACKGROUND OF THE INVENTION This invention relates to hand tools, and more particularly to a tool for extracting components, such as electronic printed circuit boards or cards from their connector housing cage.

Current modular electronic circuitry for the most part utilize a combination of circuit printed element cards that are housed in a suitable housing cage that provides mechanical and electrical support. These cards are usually slidably press-connected in the cage in close parallel relationship, requiring a tool to reach into the cage to accomplish the tasks of engaging the card, disconnecting the electricalengagement, and removing the card. Various types of hand tools and instruments have been proposed to install and remove such printed cards. Use of such prior devices had limitations in that they cause physical damage to both the cards and/or the cage; they require a separate tool for each different sized card; and are awkward and complicated in construction.

SUMMARY OF THE INVENTION This invention provides a universal hand tool for extracting printed circuit cards of various sizes from their connector housing cage. The tool comprises a rigid frame including an upper fixed handle and attached legs adapted to be restedon top of the housing. A pair of movablev handles are slidably mounted on the frame which together with thefixed handle can be spanned by the hand of the user during the extraction operation. The lower movable handle has suspended therefrom a pair of fingers having means on their free ends to engage mating means on the circuit card. The fingers are movable laterally on their supporting handle to accommodate cards of varying width.

The movable handles are interconnected so that in extracting smaller sized cards, the users hand need only span the distance between the fixed handle and the upper movable handle in order to actuate the lower movable handle to break the electrical connection and extract the selected card STATEMENT OF THE OBJECTS OF INVENTION A principal object of this invention is to provide a universal hand tool that can extract a plurality of differ- FIG. 2 is a sectional end view of FIG. 1 taken along lines lI-II.

FIG. 3 is a bottom plan view of the extractor tool.

FIG. 4 is an enlarged cross section taken along line IV-IV of FIG. 1.

FIG. 5 is a front elevation view of the extractor tool of FIG. 1 showing the final position of the handles having been squeezed together to electrically disconnect a reduced sized circuit card from the connector housing.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawing where like reference numerals refer to similar parts throughout the figures there is shown in FIG. 1 the universal hand extractor tool 10 which comprises on open rectangular rigid framework having an upper handle 12 fixedly secured to two laterally spaced, tubular side leg members 14 which are secured together at their lower ends by a cross-member 16. The lowerends of the legs 14 are adapted to rest on the top rim of the card cage 17, shown in broken lines in FIG. 1. To enable the tool to be rested on cages of smaller width, a spare leg 18 may be secured to the cross-member 16 anywhere along the length of slot 19 formed therein. When not needed, spare leg 18 may be stored conveniently on the top of one of the leg members, as shown in FIG. I.

Leg members 14 are preferably tubular in construction, and slidably support upper and lower movable members 20 and 22, respectively, which are movable in parallel relation between fixed handle 12 and crossmember 16. Movable handle members may be cylindrical, having drilled openings 22 at opposite ends slidably to receive the leg members 14.

Movable handle members 18 and 20 are interconnected, in a separating movement only, by a pair of rods 24, each rod slidably disposed within the bore opening in respective leg members. As will be obvious later, the length of rods 24 and the distance between the pins are determined by the smallest card that is to be extracted. A pair of pins 26 are mounted on each leg member normal thereto, one at each end thereof. The pins project through an elongate slot 28 formed in each leg member and are adapted to abut the outer edges of the movable handles when the latter are separated to the maximum extent of the distance between the pins. The spaced pins restrict the separating movement between the movable handles for a purpose to be described under operation, but do not restrict the movement of the handles toward each other as shown in FIG.

Lower handle member 22 has suspended therefrom a pair of fingers 30 each of which have mounted on their lower ends a short pin 32 or the like that is adapted to engage an aperture or other mating means on the circuit card 34. The upper end of each finger 30 Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.

BRIEFDESCRIPTION or THE DRAWINGS the novel universal extractor tool in a position when may be fixedly mounted to, or pivotally by a pin 36, to a short rod 38 which is freely slidable within the bore opening of lower movable handle 22 for adjusting the spacing between the fingers to accommodate the removal of cards of varying widths. Fingers 30 project through and are guided by slot 19 in the cross-member which also provides lateral support.

The operation of extractor tool 10 is apparent from the drawing. To extract a given circuit card 34 from its initially attached to an electronic printed circuit card to be extracted from its connecto-r'housing housing cage 17,-the stu'b ends of legs 14 are rested on --the--cage rim. For cagessmaller than a standard size cage, an adjustable leg 18 can be intermediately mounted on'cross-member 16 through slot 19 at a suitable position.

The card to be removed is engaged by manipulating fingers 30. For cards of standard height the position of lower movable handle 22 is sufficiently close to fixed handle 12 to be capable of being spanned by the hand of the user so that a squeezing action will enable the lifting of circuit card 34 sufficiently to be electrically disconnected from the cage, after which time the card is readily removed from the cage.

Where the card 34 is undersized in height, and thus situated much lower in the cage, the users hand need only span the upper movable handle and fixed handle 12, and any squeezing action will lift the card through the rods 24 and associated pins 26 acting on lower movable handle 22.

The extractor tool of this invention offers a sturdy, yet simple, tool for extracting circuit cards of different sizes and housed in cages of different sizes, thus making a single too] more universal and versatile in use, reducing tool inventory.

Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.

We claim:

1. A universal hand extractor tool for lifting and removing components of various sizes from their housing comprising:

a fixed handle;

a pair of leg members, each member fixedly secured at one end to the fixed handle in spaced parallel relation, each leg member terminating at another end adapted to engage the top of said housing;

a movable handle member supported on said leg members in substantially parallel relation to said fixed handle member, both handles being adapted to be spanned by the hand of the user;

a pair of fingers suspended at their upper ends from said movable handle, and being transversely movable independently thereon between said leg members;

the lower ends of said fingers having means for engaging the component to be extracted;

whereby the lateral spacing between the fingers may be adjusted for lifting components of various widths.

2. The extractor tool of claim 1 wherein said fingers are slidably mounted on said movable handle,

3. The extractor tool of claim 1 wherein said fingers are also pivotally mounted with respect to the movable handle. 4. The extractor tool of claim 1 wherein said legs are rigidly connected together at their other ends by a cross-member, said cross-member being longitudinally slotted to receive and guide said pair of fingers during ingress and egress from the housing.

5. The extractor tool of claim 4 wherein a third leg member is detachably mounted to the cross-member at an intermediate position between the other leg members to support the tool on a smaller dimensioned housing.

6.The extractor tool of claim 1 wherein a second movable handle is supported by said leg members and being positioned intermediate said fixed and movable handles;

and connecting means are provided between said movable handles, whereby a pulling movement of said second movable handle by the user during the extraction operation will actuate the first movable handle and the fingers attached thereto.

7. The extractor tool of claim 6 wherein said connecting means connects the movable handles in a lifting direction only.

8. The extractor tool of claim 1 wherein said leg members and said first-mentioned movable handle member are tubular in construction.

9. The extractor tool of claim 6 wherein said leg members are tubular having a slot extending for a major portion of their length;

said connecting means comprises a rod slidable within each of said tubular leg members;

each rod having a pin mounted at each end thereof and projecting through said slot in the respective leg and adapted to abut the outer sides of the movable handles to limit the separating movement therebetween.

10. A hand extractor tool for diconnecting and removing electronic printed circuit cards or the like of various sizes from their connector cage comprising:

a fixed handle member;

a cross-member having a longitudinal slot;

said members fixedly connected together in spaced relation by a pair of laterally spaced tubular leg members to form a rigid rectangular frame;

a pair of upper and lower handle members slidably mounted on said leg members and disposed between and parallel to said fixed handle member and said cross-member;

means for connecting together said movable handle members;

a pair of fingers mounted at their upper ends to the lower movable handle member and projecting through the slot in said cross-member;

said fingers having card engaging means at their lower ends for mating with corresponding means on said cards;

said fingers being laterally movable on said lower movable handle member for engaging cards of varying widths;

whereby the circuit cards can be engaged by the fingers on the lower movable handle member, and lifted from their cages by the users hand spanning the first and upper handle members through said connecting means.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3050841 *2 Nov 195928 Aug 1962Sylvania Electric ProdCircuit board lifter tools
US3110960 *29 May 195919 Nov 1963Gen Dynamics CorpTool for use with rigid cards
US3461534 *24 Apr 196719 Aug 1969Greenspan BertramDisconnect tools
US3583744 *16 Dec 19698 Jun 1971NasaDevice for handling printed circuit cards
US3617083 *18 Dec 19692 Nov 1971Gte Automatic Electric Lab IncTool for extracting printed circuit cards from card files
US3626575 *4 Aug 196914 Dec 1971Greenspan Bertram HPrinted circuit board extractor tool
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5113317 *20 Feb 199012 May 1992Allen-Bradley Company, Inc.Support for auxiliary circuit card
US5265328 *11 Dec 199230 Nov 1993Stratos Product Development Group, Inc.Circuit module extraction tool and method
US5390972 *3 Feb 199321 Feb 1995Vlsi Technology, Inc.Wafer cassette handle
US6167613 *26 Oct 19982 Jan 2001Intel CorporationMechanism for engaging and disengaging electrical connector halves
US618919213 Sep 199920 Feb 2001Daimlerchrysler CorporationElectrostatic powder coating spray applicator turbine installation/removal tool
US6247950 *18 Mar 199919 Jun 2001Nds LimitedSecure smart card and tool for removing same
US6397461 *22 Feb 20004 Jun 2002Intel CorporationMethod for engaging and disengaging electrical connector halves
US6681480 *26 Feb 199927 Jan 2004Micron Technology, Inc.Method and apparatus for installing a circuit device
US706586829 Dec 200327 Jun 2006Micron Technology, Inc.Methods for installing a circuit device
US7405942 *29 Sep 200529 Jul 2008Emc CorporationModule insertion/extraction device
US76003141 Sep 200513 Oct 2009Micron Technology, Inc.Methods for installing a plurality of circuit devices
US7987584 *4 Feb 20082 Aug 2011International Business Machines CorporationArticle extraction / insertion tool and assembly
US8584351 *7 Aug 201219 Nov 2013Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd.Handling apparatus for motherboard
EP0944022A2 *17 Mar 199922 Sep 1999Hughes Electronics CorporationInsertion and removal of smart cards
EP1162842A1 *1 Jun 200112 Dec 2001Sagem S.A.Television receiver/decoder with micro card
EP1272023A2 *21 May 20022 Jan 2003Nec CorporationInsertion/removal jig for printed circuit board
Classifications
U.S. Classification29/764, 294/15, 29/278
International ClassificationB25B27/02, H05K7/14
Cooperative ClassificationB25B27/02, H05K7/1415
European ClassificationH05K7/14B5, B25B27/02