Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 4237625 | Thrust producing shoe sole and heel A thrust producing shoe sole and heel having fluid-proof cavities respectively located in the heel portion and in the sole portion which underlies the metatarsal ball area of a foot for which the sole and heel is sized, the two cavities being connected by... | 12/09/1980 |
| 4236326 | Sport shoe sole A sport shoe sole having a ground sole rigid and of excellent abrasion resistance and an elastic interlayer body bonded to the ground sole, in which the interlayer body is provided at its heel portion with an air inclusion means such as grooves and apertu... | 12/02/1980 |
| 4235026 | Elastomeric shoesole An elastomeric shoesole designed specifically for athletic activities wherein the sole contains at the outer side of the heel and/or the inner side of the ball transversely-extending, longitudinally-spaced openings which extend to approximately the longit... | 11/25/1980 |
| 4229889 | Pressurized porous material cushion shoe base An air cushion shoe base has a sole and a vertical rim within which is filled in air tight relation with foam rubber which is tightly covered by an insole. The foam rubber forms small metering orifices for restricting and delaying fluid flowing forward an... | 10/28/1980 |
| 4227320 | Cushioned sole for footwear A sole supporting and cushioning member for footwear controlling the movement of foot/leg muscles in the form of a removable, preferably disposable sole shock absorber that is adapted to afford an elastic or cushioned bearing for the wearer's feet which c... | 10/14/1980 |
| 4223455 | Shoe sole containing discrete air-chambers A novel shoe incorporating a new sole and wedge-shaped arch support. The sole includes a plurality of sealed alveoli or air-chambers of different shapes which provide sufficient flexibility and resiliency to the shoe to reduce many of the common problems ... | 09/23/1980 |
| 4223456 | Shoe sole assembly A shoe sole assembly of a resilient material body portion provided with absorbers energy formed as part of the body portion. The energy absorbers are defined by vertically disposed, spaced apart cell members extending from an upper surface to beyond a low... | 09/23/1980 |
| 4219945 | Footwear A shoe embodying a multiple chambered pneumatically inflated insert encapsulated in a yieldable foam which acts as a bridging moderator filling in irregularities of the insert and providing a substantially smooth and contoured surface for supporting the f... | 09/02/1980 |
| 4217705 | Self-contained fluid pressure foot support device A device which supports and cushions the human foot by means of fluid pressure is disclosed. The device is non-elastic and self-supporting. Two superimposed plies of a fluid impervious woven fabric material are sealed to each other around the periphery an... | 08/19/1980 |
| 4183156 | Insole construction for articles of footwear An improved construction for articles of footwear, such as boots and shoes of all types, includes an inflated insert, preferably in the shape of an insole, having a multiplicity of intercommunicating, gas containing chambers, and a ventilated moderator me... | 01/15/1980 |
| 4170078 | Cushioned foot sole A cushioned sole for the foot which is hollow and resilient the interior having contained a fluid or other flowable material, such as sand and the like, the sole having for a principal purpose the affording of maximum comfort for the wearer. Small air val... | 10/09/1979 |
| 4133118 | Footwear construction Footwear having an inner sole formed of a resilient material with an upper surface contoured to provide a comfortable foot-supporting surface. The inner sole has an arch support region, a depressed heel cup region, a metatarsal support region, and in one ... | 01/09/1979 |
| 4129951 | Air cushion shoe base An air cushion shoe base has a thick sole and a thick vertical rim across which are formed air tight partitions and an insole. Each partition has a small valving orifice for flowing fluid between sections on opposite sides of a partition. A valve is provi... | 12/19/1978 |
| 4123855 | Fluid filled insole An improved fluid filled insole is disclosed. One aspect of the improvement is the inclusion of openings to provide ventilation and to control flow of the fluid. The insole is formed of two superimposed sheets of flexible, fluid impervious material sealed... | 11/07/1978 |
| 4115934 | Liquid shoe innersole An innersole for shoes formed of a plastic material having an interior fluid tight main chamber, a quantity of liquid to be placed within the main chamber with the innersole being permanently sealed to prevent leakage of the liquid exteriorly of the inner... | 09/26/1978 |
| 4106222 | Inflatable podiatric device A sole includes an inflatable envelope formed of a flexible material having a first surface adapted to conform to a foot of the wearer. A valve stem extends through the envelope along the first surface for inflating the envelope, the valve extending subst... | 08/15/1978 |
| 4100686 | Shoe sole construction A shoe sole construction is provided with a flexible bladder which is only partially filled with a non-compressible fluid. Preferably the fluid is water. The partially filled water bladder allows the water to flow from one portion of the bladder to other ... | 07/18/1978 |
| 4041618 | Contoured sole for high heeled shoes A substantially flexible unitary wedge-shaped unit sole for high heeled shoes is disclosed contoured with compound curves in the side bottom surfaces thereof to enhance the comfort and stability of the wearer while at rest, and further to enhance the stri... | 08/16/1977 |
| 4020569 | Sole of a footwear A sole of a footwear comprises a soft sole body provided at a rear half thereof with at least one upwardly opening recess and a rigid or semi-rigid reinforcing plate serving also as an insole which is mounted on said rear half of said sole body so as to c... | 05/03/1977 |
| 4016662 | Shoe construction This disclosure pertains to a shoe construction in which a sack is disposed within a cavity formed between the inner and outer sole of a shoe. An air valve may extend through the side walls of the cavity permitting the sack to be filled with a fluid. Sele... | 04/12/1977 |
| 4012855 | Anti-skid footwear A footwear adapted for anti-skid use, such as on ice or any slippery or hard surfaces, to play a broom ball game or for curling and which includes an outsole of resilient rubber sponge or microcellular rubber or foam material, such as latex or plastic foa... | 03/22/1977 |
| 4012854 | Inflatable shoe The present invention discloses an inflatable shoe wherein the bottom surface of the sole is substantially flat from the area of the heel to the metatarsal region and turns upwardly in the portion thereof that is forward of the metatarsal region and an in... | 03/22/1977 |
| 4009528 | Sneaker with insole A sneaker or canvas shoe having an insole comprising a soft pad which is encased in a sealed film envelope to prevent the pad from absorbing moisture, odors and contamination. The envelope includes a chamber disposed beyond an end of the pad into which ai... | 03/01/1977 |
| 4008530 | Inflatable sole shoe A shoe formed with an inflatable sole adaptable for filling with a fluid under pressure. The inflatable sole section extends from the front to the rear of the shoe and is fitted on the side with a flush mounted valve for inflating or deflating the sole. A... | 02/22/1977 |
