US5204159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deformable, slip-free, anti-skid pads for snow and ice
Assignee: Individual
•
Filing: 1991-03-29
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Granted: 1993-04-20
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Expires: 2011-03-29
Abstract
Abstract A deformable slip-free, anti-skid pad comprising: a bottom surface having a plurality of spikes slightly extending vertically from recessed areas of the bottom surface; and a top surface comprising a resilient material having imbedded therein particles of abrasive materials.
Inventors
- 👤 Domingo K. L. Tan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:50
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/24; E01C5/00; E01C5/20; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/24; Y10T428/24008; Y10T428/24174; Y10T428/24355; Y10T428/24372; Y10T428/24405; Y10T428/24421; Y10T428/2443; Y10T428/24479; Y10T428/24612; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31721; Y10T428/31786; Y10T428/31826
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A deformable pad for placement on slippery snow and icy surfaces to form a slip-free walking spot when walkers step thereon, comprising: a) an anti-skid bottom surface having a plurality of spikes slightly extending vertically from hemispherically recessed areas of said bottom surface; and b) an anti-slip top surface comprising a resilient material having embedded therein particles of abrasive materials held in spaced-apart relationship, and wherein said abrasive materials extend partially out of and above an uppermost area of said top surface.
Claim 2
Dependent Claim
82 words
A deformable pad for placement on slippery snow and icy surfaces to form a slip-free walking spot when walkers step thereon, comprising: a) an anti-skid bottom surface having a plurality of spikes slightly extending vertically from hemispherically recessed areas of said bottom surface; and b) an anti-slip top surface comprising a resilient material having embedded therein particles of abrasive materials held in spaced-apart relationship, and wherein said abrasive materials extend partially out of and above an uppermost area of said top surface.
Claim 3
Dependent Claim
24 words
The pad of claim 1, wherein an adhesive or bonding agent is disposed between an interface between said bottom surface and said top surface.
Claim 4
Dependent Claim
35 words
The pad of claim 1, wherein said bottom surface and said top surface are formed from materials selected from the group consisting of a polyester, a polyurethane, epoxy resins, polyimides and natural and synthetic rubbers.
Claim 5
Dependent Claim
16 words
The pad of claim 3, wherein said abrasive materials are mixtures of sand and vulcanizable rubbers.
Claim 6
Dependent Claim
30 words
The pad of claim 3, wherein said abrasive materials are nonfriable particles selected from the group consisting of diamond dust, boron carbide, boron nitride, tungsten carbide, aluminum ceramic and taconite.
Claim 7
Dependent Claim
20 words
The pad of claim 3, wherein said bottom surface and said top surface are integral and formed of one material.
Claim 8
Dependent Claim
16 words
A plurality of pads of claim 1, placed to form a walkway on a slippery surface.
Claim 9
Dependent Claim
12 words
A plurality of pads of claim 7, wherein the surface is ice.
Claim 10
Dependent Claim
12 words
A plurality of pads of claim 7, wherein the surface is snow.
Claim 11
Dependent Claim
17 words
A plurality of pads of claim 7, wherein the surface is a mixture of ice and snow.
References Cited (Backward Citations)
US127502A
Cited
US2044407A
Cited
US2165955A
Cited
US2585515A
Cited
US3335645A
Cited
US4223835A
Cited
US4340633A
Cited
US4348447A
Cited
US4336293A
Cited
US4840309A
Cited
US4998670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |