US4649586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sole for athletic shoe and method of making the same
Assignee: Individual
•
Filing: 1985-11-12
•
Granted: 1987-03-17
•
Expires: 2005-11-12
Abstract
Abstract A midsole for an athletic shoe made by a process comprising, forming a plastic board using a composition containing polyethylene resin, polypropylene resin, polyester fiber, acrylic fiber, nylon fiber and cotton fiber, overlaying at least one layer of woven fabric on said plastic board, and punching needle holes at intervals in the full area of the superposed board and fabric layer, whereby the fibers in the board and the fabric layer are interlinked binding the board and the fabric layer, and vents are formed in the bonded board and the fabric layer.
Inventors
- 👤 Chuck Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:51
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/14; B29D35/142; A; A43; A43B; A43B13/00; A43B13/02; A43B13/12; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3707; Y10T442/3724
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A method of making a midsole for a shoe comprising: forming a plastic board using a composition containing polyethylene resin, polypropylene resin, polyester fiber, acrylic fiber, nylon fiber and cotton fiber; overlaying at least one layer of woven fabric on said plastic board; punching needle holes at intervals in the full area of the superposed board and fabric layer, whereby the fibers in the board and the fabric layer are interlinked thereby binding the board and the fabric layer and forming vents in the bonded board and the fabric layer; and applying on said woven fabric layer a coating selected from polyethylene coating and polypropylene coating, and compressing the boards and the fabric layer to cause the coating to penetrate into the fabric layer.
Claim 2
Independent Claim
124 words
A method of making a midsole for a shoe comprising: forming a plastic board using a composition containing polyethylene resin, polypropylene resin, polyester fiber, acrylic fiber, nylon fiber and cotton fiber; overlaying at least one layer of woven fabric on said plastic board; punching needle holes at intervals in the full area of the superposed board and fabric layer, whereby the fibers in the board and the fabric layer are interlinked thereby binding the board and the fabric layer and forming vents in the bonded board and the fabric layer; and applying on said woven fabric layer a coating selected from polyethylene coating and polypropylene coating, and compressing the boards and the fabric layer to cause the coating to penetrate into the fabric layer.
Claim 3
Dependent Claim
22 words
A method as claimed in claim 1, wherein said woven fabric is made of fibers selected from polypropylene fibers and polyethylene fibers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |