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Publication numberUS1869257 A
Publication typeGrant
Publication dateJul 26, 1932
Filing dateDec 10, 1930
Priority dateDec 10, 1929
Publication numberUS 1869257 A, US 1869257A, US-A-1869257, US1869257 A, US1869257A
InventorsTheodor Hitzler
Original AssigneeTheodor Hitzler
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Insole
US 1869257 A
Images(1)
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Description  (OCR text may contain errors)

Patented July 26,. 1932 UNITED STATES rmsonon man, or

LEOHBEBG, GERMANY INSOLE Application filed December 10, 19:0, Serial No.

The present invention relates to an insole constructed as an air cushion to facilitate I walking and prevent premature fatigue. Furthermore, the insole as a eneral bene- 6 ficial efl'ect upon the health of t e wearer by absorbing the shocks due to walking on hard ground, which are detrimental to certain organs of the human body, such as the kid'- ne s. l essential feature of the invention is that the top and bottom portions of the insole are connected over their entire surface b means of intermediate pieces or webs whic are of the usual hollow type. This connection 16 of the two insole portions over their entire .area insures convenient walking even when continued for a lon period of time, as the entire area is divide into small curved cushion units forming together a plane surface 20 which remains so during walking and also,

owin to the presence of the webs which prevent ulging by the action of air pressed from one point to another. The distribution of the webs over the entire area of the insole 2'5 affords the added advantage of inflating the insole thoroughly without causing it to bul In the known types of insoles rovi ed with air cushions the insole is subdivided only into a number of large spaces or its two walls are connected by lattice-like intermediate pieces. In thefirst case, the air blown in even at a comparatively low pressure will cause the insole to bulge to such an extent that. walking becomes uncomfortable; and in the second case, inflation of the numeroustiny 501,408, and in Germany December 10, 1929.

disclosed both as to number and 'arrdnggfg mt. The upper wall 6 and the lower wa l c of the air cushions preferably made from rubber are interconnected by means of the webs d which may be hollow as shown at e if desired In in a preferably inextensible manner so that the subdivision of the cushion permits only the formation of very sli ht elevations between the various points 0 connection.

I claim A removable insole adapted to be placed in a shoe comprising a top wall a bottom wall, and a plurality of hollow webs interconnecting the two walls together thereby forming air cushions betweenthe walls and the insole 66 germltting the passage of air therethrough y means of the webs.

In testimony whereof I aflix m si ature.

THEODOR H TZ ER.

lattice cells is im ossible so that the insole 1s filled only ins ciently with air of normal pressure.

One embodiment of the invention is illus- 40 trated in the accompanying drawing, in which Figure l is a diagrammatic longitudinal section showing the invention; Fig. 2, a vertical longitudial section of an insole ready for use Fig. 3, a top view thereof; and Fig. 4, a

46 vertical section on an enlarged scale of a portion'of the insole prior to inflation.

Referring to the drawing, the insole in the modification shown is provided at the ball and heel portions with the air cushions a which may, however, differ from the example

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2968105 *Mar 3, 1959Jan 17, 1961Rizzo Olympio CPneumatic jump boot construction
US3724106 *Jun 29, 1971Apr 3, 1973Magidson HInsole structure
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Classifications
U.S. Classification36/3.00R, 36/29, 36/153, 36/3.00B
International ClassificationA43B17/03, A43B17/00, A43B17/08
Cooperative ClassificationA43B17/03, A43B17/08
European ClassificationA43B17/03, A43B17/08