US4079526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear
Assignee: Individual
•
Filing: 1976-12-13
•
Granted: 1978-03-21
•
Expires: 1996-12-13
Abstract
Abstract A footwear includes a bottom body formed from soft synthetic resin and a hard or semihard core material laid on the bottom body. The bottom body has a pressure projection protruding upwards from the upper face of the core material and there is provided a fitting construction for the core material of the peripheral edge of the pressure projection, whereby the core material is secured to the bottom body at the fitting construction. The pressure projection of this footwear provides a comfortable wearing feeling and strongly locks the core material laid on the bottom body, preventing disengagement thereof from the bottom body.
Inventors
- 👤 Tatsuo Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:29
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/14; A43B7/1405; A43B7/1415; A43B1/00; A43B1/0054; A43B7/142; A43B7/144; A43B7/1445; A43B7/1455
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
Footwear, comprising: a bottom body composed of soft synthetic resin and having a pressure projection protruding upwardly from the upper surface thereof; a relatively rigid core body composed of a hard or semihard material, said core body being positioned over at least the heel portion of said bottom body and having an edge portion which engages at least a portion of said pressure projection, said pressure projection protruding above the level of the upper surface of said core body; and interfitting means for engagement of said core body by said pressure projection to prevent said core body from pulling out upwardly from said bottom body.
Claim 2
Dependent Claim
105 words
Footwear, comprising: a bottom body composed of soft synthetic resin and having a pressure projection protruding upwardly from the upper surface thereof; a relatively rigid core body composed of a hard or semihard material, said core body being positioned over at least the heel portion of said bottom body and having an edge portion which engages at least a portion of said pressure projection, said pressure projection protruding above the level of the upper surface of said core body; and interfitting means for engagement of said core body by said pressure projection to prevent said core body from pulling out upwardly from said bottom body.
Claim 3
Dependent Claim
39 words
Footwear in accordance with claim 1 wherein said interfitting means comprises a groove on a peripheral edge of said pressure projection, said edge portion of said core body which engages said pressure projection being interfittingly engaged with said groove.
Claim 4
Dependent Claim
37 words
Footwear as claimed in claim 1, wherein said core body is positioned only over the rear half of said bottom body, and wherein said pressure projection is located at about the central portion of said bottom body.
Claim 5
Dependent Claim
46 words
Footwear as claimed in claim 1, wherein said core body is positioned over substantially the whole surface of said bottom body, except for an aperture at the position of said pressure projection, said pressure projection being located at about the central portion of said bottom body.
Claim 6
Dependent Claim
22 words
Footwear as claimed in claim 1, wherein said bottom body has two or more pressure projections which protrude above said core body.
Claim 7
Dependent Claim
23 words
Footwear as claimed in claim 1, wherein said core body has at least one pressure projection, integral therewith, on the upper surface thereof.
Claim 8
Dependent Claim
46 words
Footwear as claimed in claim 1, wherein said pressure projection has a projection core buried in the upper portion thereof and protruding thereabove, said projection core being made of a material selected from the group consisting of hard synthetic resin, semihard synthetic resin, metal and magnet.
Claim 9
Dependent Claim
29 words
Footwear as claimed in claim 1, wherein said bottom body and/or said core body is mixed with powder magnet thereby allowing the footwear as a whole to have magnetism.
References Cited (Backward Citations)
GB472217A
Cited
US2852865A
Cited
US3059350A
Cited
US3722113A
Cited
US3859727A
Cited
US4015347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |