Patent US4822339A successfully refreshed from Google Patents.
Patent US3577835A successfully refreshed from Google Patents.
US3577835A
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US
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Ski mat apparatus
Assignee: SKI MOR Inc
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Filing: 1969-01-17
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Granted: 1971-05-04
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Expires: 1989-01-17
Abstract
Abstract Sliding surfaces having a plurality of annular, rigid strips with bristles extending uniformly upward, the strips being interconnected to form a continuous surface of upward directed bristles in annular rings, are described herein.
Inventors
- 👤 John P Horton
- 👤 Robert E Sollmann
- 👤 Joaquim L Santos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:43
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/10; E01C13/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
Improved sliding surface apparatus comprising a plurality of individual closed-loop elements assembled in side-by-side relation, each of said elements comprising a continuous base portion with upward projecting bristles projecting above said base portion, said base portions being flexibly connected to conform to a supporting surface.
Claim 2
Dependent Claim
45 words
Improved sliding surface apparatus comprising a plurality of individual closed-loop elements assembled in side-by-side relation, each of said elements comprising a continuous base portion with upward projecting bristles projecting above said base portion, said base portions being flexibly connected to conform to a supporting surface.
Claim 3
Dependent Claim
10 words
Apparatus of claim 1 wherein the base portions are channel-shaped.
Claim 4
Dependent Claim
13 words
Apparatus of claim 1 wherein each of said elements has an arcuate periphery.
Claim 5
Dependent Claim
13 words
Apparatus of claim 1 wherein each of said elements has an angular periphery.
Claim 6
Dependent Claim
14 words
Apparatus of claim 1 wherein each of said elements has a double circular figure-8-shape.
Claim 7
Dependent Claim
26 words
Apparatus of claim 1 further comprising a plurality of fasteners laterally connecting each of said elements to more than one adjacent elements, thereby forming a mat.
Claim 8
Dependent Claim
52 words
Apparatus of claim 6 wherein each of said fasteners comprises a bottom portion underlying corresponding sections of adjacent elements and having upward extension means integrally formed with the bottom portion and extending above the elements, and a pin portion connected to said bottom portion and overlying said corresponding sections of adjacent elements.
Claim 9
Dependent Claim
23 words
Apparatus of claim 6 wherein said elements further comprise depending lugs, and wherein said fasteners comprise clips engaging corresponding lugs of adjacent elements.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |