Patent US4217704A successfully refreshed from Google Patents.
US4217704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear
Assignee: Individual
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Filing: 1978-06-29
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Granted: 1980-08-19
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Expires: 1998-06-29
Abstract
Abstract Footwear for wearing over shoes or boots and having a sole of non-woven synthetic fibres providing a high degree of traction with a slippery surface. A shell is of flexible material and protects the shoe or boot from contact with harsh chemicals used in floor cleaning compounds. The shell may include reduced areas to facilitate attachment and removal of the present footwear.
Inventors
- 👤 Mervin A. Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:53
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/22; A43B3/00; A43B3/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
Protective non-slip footwear for wearing over conventional footwear to protect the sole, heel and upper of same from damaging chemical floor treating compounds, said non-slip footwear comprising, a flexible shell for retentive engagement with the conventional footwear, said shell including toe and heel portions for substantially enclosing the conventional footwear upper and also including a continuous planar bottom wall extending the length of the shell subjacent the sole and heel of the conventional footwear, and a pad attached to said planar bottom wall of said shell and coterminous therewith, said pad being of synthetic fibres and having upper and lower pad surfaces lying in spaced apart planes with the lower pad surface being of randomly orientated synthetic fibres to provide a high degree of traction for the protective footwear.
Claim 2
Dependent Claim
129 words
Protective non-slip footwear for wearing over conventional footwear to protect the sole, heel and upper of same from damaging chemical floor treating compounds, said non-slip footwear comprising, a flexible shell for retentive engagement with the conventional footwear, said shell including toe and heel portions for substantially enclosing the conventional footwear upper and also including a continuous planar bottom wall extending the length of the shell subjacent the sole and heel of the conventional footwear, and a pad attached to said planar bottom wall of said shell and coterminous therewith, said pad being of synthetic fibres and having upper and lower pad surfaces lying in spaced apart planes with the lower pad surface being of randomly orientated synthetic fibres to provide a high degree of traction for the protective footwear.
Claim 3
Dependent Claim
26 words
The protective non-slip footwear claimed in claim 1 wherein said shell is of elastomeric material for stretched encasing engagement with the upper of said conventional footwear.
Claim 4
Dependent Claim
25 words
The protective non-slip footwear claimed in claim 2 wherein said pad is of uniform depth and substantially co-extensive in length with the shell bottom wall.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |