US3704023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski with cut-resistant surface covering
Assignee: 3M Co
•
Filing: 1970-10-02
•
Granted: 1972-11-28
•
Expires: 1990-10-02
Abstract
Abstract Skis and similar structures are provided with a cut-resistant decorative surface layer of urethane resin on a fibrous support. The protective surface layer may be removed and replaced as needed. The ski is protected against marring and scratching and is stabilized against chatter.
Inventors
- 👤 Dan Lloyd Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:24
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/04; A63C5/056; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T442/00; Y10T442/60; Y10T442/681
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
17 words
The manufacture of claim 1 wherein said fibrous base is a nonwoven spunbonded weB of polyester filaments.
Claim 2
Dependent Claim
17 words
The manufacture of claim 1 wherein said fibrous base is a nonwoven spunbonded web of nylon filaments.
Claim 3
Dependent Claim
19 words
The manufacture of claim 1 wherein said adhesive cement consists essentially of butadiene-acrylonitrile rubbery polymer and phenol-aldehyde tackifier resin.
Claim 4
Dependent Claim
15 words
The manufacture of claim 1 wherein said adhesive cement consists essentially of neoprene-phenolic contact adhesive.
Claim 5
Dependent Claim
14 words
The manufacture of claim 1 wherein said urethane resin layer contains pigmented elastomeric particles.
References Cited (Backward Citations)
US2537982A
Cited
US2918442A
Cited
US3070476A
Cited
US3336183A
Cited
US3272522A
Cited
GB1173199A
Cited
US3567237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |