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Publication numberUS2983056 A
Publication typeGrant
Publication dateMay 9, 1961
Filing dateMay 12, 1959
Priority dateMay 12, 1959
Publication numberUS 2983056 A, US 2983056A, US-A-2983056, US2983056 A, US2983056A
InventorsMurawski Steven A
Original AssigneeMurawski Steven A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pneumatic foot wear
US 2983056 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

y 1961 s. A. MURAWSKl 2,983,056

PNEUMATIC FOOT WEAR Filed May 12, 1959 26 FIG.4.

A 1 INVENTOR S feven A Murawski United States Patent Office 2,983,056 Patented May 9, 1961 PNEUMATIC FOOT WEAR Steven A. Murawski, 13422 Ave. K, Chicago 33, Ill. Filed May 12, 1959, Ser. No. 812,610

1 Claim. (Cl. 36-29) This invention relates to pneumatic foot wear.

It is the principal object of the present invention to provide a cushioned sole and heel construction for shoes and to thereby make for more comfortable shoes.

It is another object of the present invention to provide a shoe that will give to the wearer a spring to his stride, a feeling of walking on a thick carpet, and a shoe that is easy on the feet.

It is still another object of the invention to provide a cushioned sole and heel formed of layers of perforated material secured to an inner layer extended over the edges of the other layers and adapted to be sewed to the shoe upper for the connection of the sole thereto.

It is another object of the invention to provide a cushioned sole for shoes which can be put on old shoes and as well built into new shoes.

Other objects of the invention are to provide cushioned soles and heels for shoes having the above objects in mind, which is of simple construction, inexpensive to manufacture, has a minimum number of parts, easy to install upon the shoes, light in weight, compact, durable, efiicient and effective in use.

For a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which Figure 1 is a perspective view of a shoe having the cushioned sole and heels of the present invention,

Fig. 2 is a bottom plan view of the sole and heel with portions of the sole broken away to show the transverse perforations therethrough,

Fig. 3 is an enlarged fragmentary longitudinal sectional view of the sole as viewed on line 3-3 of Fig. 2, and

Fig. 4 is an enlarged longitudinal sectional view of the cushioned heel as viewed on line 4-4 of Fig. 2.

Referring now to the figures, represents a shoe having sole 11 and a heel 12 thereon constructed and secured to its upper 13 according to the present invention. The sole 11 has a top layer or foundation member 14 made of hard synthetic rubber or the like material to which a thick layer 15 of preferably soft live natural rubber is vulcanized and which has transversely-extending large and small holes or perforations 16 and 17 that extend from one side of the sole to and through the other side of the sole. This layer 15 is shock absorbing and gives the principal cushioning elfect desired. Vulcanized to this intermediate layer 15 is a wear layer 18 that is of less thickness than the layer 15 and which is preferably formed of synthetic rubber adapted to withstand long wear. It may also have holes 19 extending transversely therethrough to lighten the weight of the material. These holes may be located adjacent to the side of the layer 18 wherein it is vulcanized to the layer 15. The inner layer 14 may also have small openings 20 adjacent to the side of the inner layer 15 that is vulcanized thereto.

All three layers of the material will be vulcanized together so as to form a one piece construction. The inner 2 layer 14 has its peripheral edge extending outwardly beyond the layers 15 and 18 as indicated at 21 to provide means by which the sole can be attached or sewed to the upper 13 of the shoe 10. r

The heel 12 is similarly constructed and may be secured to the layer 14 in the usual manner in which rubber heels are secured thereto by means of nails 22 extended through holes 23 provided in the heels. The heel 12 is formed of a soft live rubber layer 24 having large and small perforations 25 and 26 extending laterally therethrough and to which a wear layer 27 having perforations 28 and of hard wearing synthetic rubber is added. This layer 27 is vulcanized to the layer 24 as above described. The heel so formed of the two layers 24 and 27 can be secured by nails 22 extending through vertical holes 23 or the heel can be permanently vulcanized or glued to the inner layer 14. It should now be apparent that there has been provided cushioned soles and heels that will give to the soles and heels a cushioned effect and render the shoes less tiresome on the feet and comfortable to wear all day. The holes are of such dimension and number as to provide the soft cushioning elfect and at the same time considerably lighten the weight of the sole or heel. In the heels washers 23' are provided about the holes 23 to keep the nails from passing through the heel. These washers are embedded in and secured to the upper surface of the soft rubber layer 24. The inner layer may run one eighth of an inch thick, the intermediate layer one half of an inch thick and the bottom wear surface approximately three eighths of an inch in thickness.

It will be understood that the soles and heels can be made of any suitable material giving the desired effect for the respective layers and that the same can be made in different sizes and for men, women and childrens shoes. It shall be understood that the soles and heels can be made for use on new shoes as well as for use on old shoes.

While various changes may be made in the detailed construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claim.

What is claimed is:

A laminated pneumatic sole for footwear comprising a relatively thin foundation member of hard synthetic rubber and a ground-engaging member of like material, but of greater thickness, a substantially thick layer of elastic material interposed between and secured to opposed faces of the foundation member and the groundengaging member, said layer of elastic material having a multiplicity of longitudinally spaced openings extending transversely of said layer and being open upon respective sides of said layer and said foundation member and said ground-engaging member having a plurality of spaced transverse openings of lesser diameter adjacent the sides of securement to said layer of elastic material.

References Cited in the file of this patent UNITED STATES PATENTS 1,402,872 Langford Jan. 10, 1922 1,498,838 Harrison June 24, 1924 1,596,923 Cooney Aug. 24, 1926 1,961,745 Eekhardt June 5, 1934 2,170,947 Habgood et a1. Aug. 29, 1939 2,237,190 McLeod Apr. 1, 1941 2,323,562 Nugent July 6, .1943 2,467,322 Lightbown Apr. 12, 1949 2,668,789 Phreaner Feb. 9, 1954 2,772,196 Pooley Nov. 27, 1956

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1402872 *Sep 15, 1921Jan 10, 1922George E LangfordMethod of uniting layers of rubber of unlike character
US1498838 *Mar 16, 1923Jun 24, 1924Harrison Jr James ThomasPneumatic shoe
US1596923 *Mar 24, 1925Aug 24, 1926Charles CooneyCushion insole
US1961745 *Jan 16, 1931Jun 5, 1934Mechanical Rubber CoLaminated material
US2170947 *Mar 16, 1937Aug 29, 1939Ici LtdManufacture of rubber articles
US2237190 *Jun 6, 1939Apr 1, 1941Angus McleodInner sole
US2323562 *Mar 24, 1942Jul 6, 1943B B Chem CoShoe tread member
US2467322 *Dec 7, 1940Apr 12, 1949Jasco IncTie gum for polymer-rubber articles
US2668789 *Oct 16, 1950Feb 9, 1954Calvin White HComposite rubber and resinous plastic materials and method of making same
US2772196 *May 21, 1954Nov 27, 1956Us Rubber CoShoe sole and method of making same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3719965 *Apr 13, 1971Mar 13, 1973Parttzky Sa EtsMethod of making footwear soles
US3785646 *Apr 9, 1973Jan 15, 1974S RuskinExercising device
US4236326 *Apr 14, 1978Dec 2, 1980Asics CorporationSport shoe sole
US4322891 *Aug 4, 1980Apr 6, 1982Asics CorporationSport shoe sole
US4322892 *Aug 4, 1980Apr 6, 1982Asics CorporationSport shoe sole
US4325194 *Aug 4, 1980Apr 20, 1982Asics CorporationSport shoe sole
US4359830 *Aug 4, 1980Nov 23, 1982Asics CorporationSport shoe sole
US4364189 *Dec 5, 1980Dec 21, 1982Bates Barry TRunning shoe with differential cushioning
US4506461 *May 28, 1982Mar 26, 1985Asics CorporationSport shoe sole
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US4779361 *Jul 23, 1987Oct 25, 1988Sam KinsaulFlex limiting shoe sole
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US8726424Jun 3, 2010May 20, 2014Intellectual Property Holdings, LlcEnergy management structure
US9320311Mar 14, 2013Apr 26, 2016Intellectual Property Holdings, LlcHelmet impact liner system
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U.S. Classification36/29, 36/32.00R, 36/30.00R
International ClassificationA43B13/20, A43B13/02, A43B13/12, A43B13/18
Cooperative ClassificationA43B13/12, A43B13/206
European ClassificationA43B13/20T, A43B13/12