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Publication numberUS1856394 A
Publication typeGrant
Publication date3 May 1932
Filing date7 Dec 1929
Priority date11 Dec 1928
Publication numberUS 1856394 A, US 1856394A, US-A-1856394, US1856394 A, US1856394A
InventorsLettermann Adolf
Original AssigneeLettermann Adolf
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for taking foot-impressions
US 1856394 A
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Description  (OCR text may contain errors)

y 3, 1932- A. LETTERMANN 1,856,394

DEVICE FOR TAKING FOOT IMPRESSIONS Filed D sc. 7. 1929 70 van for. flywfzz n/nwm ZZ/KQ Patented 'May 3, 1932 ADOLF LETTEBM ANN, OF BERLIN-TEHPEIHOF, GEM! DEVICE FOR TAKTNG FOOT-IMPRESSIONS Application filed December 7, 1929, Serial 1T0.

This invention relates to a device for taking foot impressions. In order to do away with the complaints and organic alterations resulting from a flat-foot, splay-foot or stretched foot a great number of foot sup- 'ports have been constructed. These supports are either manufactured uniformly according to the size of the foot or adapted to the foot by measuring the treading surface. These measurements are, for instance, carried out in such away that the patient is made to set his .foot with the sole painted upon white paper, or the patient is made to step upon a semi-set mass of plaster of Paris. However in both cases no image of the burdened sole isobtained permittin of con- I clusions as to the degree of sinking o the foot caused by the load. The correct image can' only be obtained by exerting pressure upon the sole from below upwards and thereby removing the sinking caused by the relaxing of the ligaments.

A pneumatic chamber would be ca able of solving this problem, but steady wal g on such a support would be impossible for various reasons.

Now I have found that an impression of a sole may well be produced representing an exact copy of the burdened sole showing the so fepgsition of the bone p sinking under the A device for taking an impression of such kind is illustrated in annexed drawings, of which Fig. 1 is a plan view, and Fig. 2, a vertical cross section of a device embodying. my invention.

The device consists of a flat chamber having an elastic envelope a, the plan view corres lpholndin' to outline of a human foot.

's chamber is .filled with a molten mass 6 which solidifies after some time, such as a mixture of paraflin and wax.

When the patient steps upon this chambe filled with the molten mass and'remains upon it until the mass has soli ed, the mass in the chamber is compressed'by the weight of the body so that it forces upwards the least burdened parts i. e. the very ones sunk by loosening of the Ii 60 tension ofthe relaxe ligaments cannot occur.

ments. An excessive 412,502, and in Germany December 11, 1988.

The chamber may also be provided with a flexible pipe, as c in Fig. 1, throu h which the molten mass may be in ected, un er pressure, into the evacuated loaded chamber.

The described device ermits of taking measure in the boot itsel Hereby, besides the impression of the foot, the exact dform of the inner sole of the boot or shoe is reproduced. The impression may be used, with or without the envelope, as a permanent foot support.

I claim 1. A. device for taking foot impressions, comprising a flat closed elastic chamber hav ing the outline of a human foot and filled with a liquid mass which solidifies in a short time.

2. A. device for taking foot impressions, comprising a flat closed elastic chamber havin the outline of a human foot and being ed with a liquid mass-which solidifies in a short time, and a flexible pipe communicating with the said chamber.

3. The method of taking im ressions from a flat, spla or stretched foot 0 a person, comprising ing a plastic mass WhlCh solidifies m a short time into a flexible chamber having substantially the outline of the foot, putting this chamber into a boot or shoe, and shapin the said chamber b making the person wa upon the said cham er.

In testimony whereof I aflix my signature.

ADOLF LETTERMANN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2476993 *2 Feb 194826 Jul 1949Jr Clare L MiltonProcess for making molds
US2476994 *2 Feb 194826 Jul 1949Jr Clare L MiltonProcess for making molds
US2488922 *20 Sep 194422 Nov 1949Warren J MeadMethod for making impressions of objects
US2517902 *31 Aug 19448 Aug 1950George C LuebkemanMolding process and means
US2838776 *3 Dec 195417 Jun 1958Tax Herman RMethod of making an orthopedic shoe
US2856771 *16 Aug 195521 Oct 1958Anderson Maurice KSymptomatic imprinting insoles and sole printing packs
US2923066 *17 Jul 19572 Feb 1960Jones Jr John WVariable drawing curve
US3309447 *17 Feb 196414 Mar 1967James E WegleyMethod for making foot supports
US3398221 *9 Jun 196520 Aug 1968Garry ShermanMethod of producing shoe inserts
US4385024 *15 Jun 198124 May 1983Tansill Horace AMethod for making a molded article from a curable material and a curing agent, the curing agent being in a container initially flexible and infrangible which is made frangible
US4522777 *15 Dec 198211 Jun 1985Peterson LaboratoriesMethod and apparatus for making corrected custom foot molds
US4747989 *6 May 198531 May 1988Peterson LaboratoriesOrthopedic devices; uniform, reliable molding of foot supported on resilient cushion
US5275775 *21 Oct 19914 Jan 1994Riecken George CMethod for making an insole
US5282328 *9 Jul 19921 Feb 1994Peterson Technology TrustCustom foot beds for footwear
US5358394 *16 Aug 199325 Oct 1994Riecken George CApparatus for making an insole
WO1984002304A1 *15 Dec 198321 Jun 1984Peterson LabMethod and apparatus for making corrected custom foot molds
WO1993008008A1 *20 Oct 199229 Apr 1993George Carl RieckenFoot orthosis and method
Classifications
U.S. Classification264/223, 73/172, 425/2, 264/DIG.300, 12/148, 36/30.00R
International ClassificationA43B7/28
Cooperative ClassificationA43B7/28, Y10S264/30
European ClassificationA43B7/28