Patent US3922409A successfully refreshed from Google Patents.
US3922409A
Expired / Lapsed
US
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Footmat
Assignee: Individual
•
Filing: 1974-01-21
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Granted: 1975-11-25
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Expires: 1994-01-21
Abstract
Abstract The footmat comprises a multiplicity of closely spaced heads which are distributed throughout the area of the mat and define interstices between them and are provided each with at least two spaced apart supporting feet. Each of said feet is joined below the heads to supporting feet of adjacent heads to form an integral grate.
Inventors
- 👤 Erwin Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:31
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/04; E01C13/045; E01C9/00; E01C9/004; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/24; Y10T428/24479; Y10T428/24628; Y10T428/24669
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
68 words
A MAT COMPRISING: A. A PLURALITY OF SPACED HEAD PORTIONS HAVING RESPECTIVE EXPOED FACES, SAID FACES JOINTLY DEFINING A FIRST SURFACE; B. A PLURALITY OF ELONGATED FOOT PORTIONS ASSOCIATED WITH EACH HEAD PORTION AND EXTENDING AWAY FROM THE ASSOCIATED HEAD PROTION TRANSVERSELY OF SAID FIRST SURFACE; AND C. A PLURALITY OF SPACED NODE PORTIONS HAVING RESPCTIVE EXPOSED FACES JOINTLY DEFINING A SECOND SURFACE PARALLEL TO SAID FIRST SURFACE,
Claim 2
Dependent Claim
68 words
A MAT COMPRISING: A. A PLURALITY OF SPACED HEAD PORTIONS HAVING RESPECTIVE EXPOED FACES, SAID FACES JOINTLY DEFINING A FIRST SURFACE; B. A PLURALITY OF ELONGATED FOOT PORTIONS ASSOCIATED WITH EACH HEAD PORTION AND EXTENDING AWAY FROM THE ASSOCIATED HEAD PROTION TRANSVERSELY OF SAID FIRST SURFACE; AND C. A PLURALITY OF SPACED NODE PORTIONS HAVING RESPCTIVE EXPOSED FACES JOINTLY DEFINING A SECOND SURFACE PARALLEL TO SAID FIRST SURFACE,
Claim 3
Dependent Claim
18 words
EACH NODE PORTION BEING CONNECTED TO TWO OF SAID HEAD PORTIONS BY RESPCTIVE ONES OF SAID FOOT PORTIONS,
Claim 4
Dependent Claim
18 words
EACH NODE PORTION BEING CONNECTED TO TWO OF SAID HEAD PORTIONS BY RESPCTIVE ONES OF SAID FOOT PORTIONS,
Claim 5
Dependent Claim
22 words
SAID HEAD PORTIONS DEFINING THEREBETWEEN A PLURALITY OF FIRST PASSAGES EXTENDING THROUGH SAID MAT FROM SAID FIRST SURFACE TO SAID SECOND SURFACE,
Claim 6
Dependent Claim
22 words
SAID HEAD PORTIONS DEFINING THEREBETWEEN A PLURALITY OF FIRST PASSAGES EXTENDING THROUGH SAID MAT FROM SAID FIRST SURFACE TO SAID SECOND SURFACE,
Claim 7
Dependent Claim
27 words
A mat as set forth in claim 1, wherein said head portions, node portions, and foot portions jointly constitute a unitary body, said foot portions being resilient.
Claim 8
Dependent Claim
22 words
said head portions defining therebetween a plurality of first passages extending through said mat from said first surface to said second surface,
Claim 9
Dependent Claim
22 words
said head portions defining therebetween a plurality of first passages extending through said mat from said first surface to said second surface,
Claim 10
Dependent Claim
17 words
said foot portions defining a plurality of second passages extending between said surfaces and connecting first passages.
Claim 11
Dependent Claim
17 words
said foot portions defining a plurality of second passages extending between said surfaces and connecting first passages.
Claim 12
Dependent Claim
19 words
A mat as set forth in claim 1, wherein said first passages are straight and perpendicular to said surfaces.
Claim 13
Dependent Claim
17 words
SAID FOOT PORTIONS DEFINING A PLURALITY OF SECOND PASSAGES EXTENDING BETWEEN SAID SURFACES AND CONNECTING FIRST PASSAGES.
Claim 14
Dependent Claim
17 words
SAID FOOT PORTIONS DEFINING A PLURALITY OF SECOND PASSAGES EXTENDING BETWEEN SAID SURFACES AND CONNECTING FIRST PASSAGES.
Claim 15
Dependent Claim
24 words
A mat as set forth in claim 3, wherein said exposed faces of said head portions are flat and parallel to said first surface.
Claim 16
Dependent Claim
28 words
A mat as set forTh in claim 4, wherein said exposed faces of said node portions are rounded and smaller than said exposed faces of said head portions.
Claim 17
Dependent Claim
27 words
A mat as set forth in claim 1, wherein the foot portions associated with each head portion diverge in a direction away from the associated head portion.
Claim 18
Dependent Claim
31 words
A mat as set forth in claim 6, wherein the foot portions connecting each node portion to said two head portions diverge in a direction away from the connected node portion.
Claim 19
Dependent Claim
46 words
A mat as set forth in claim 1, said mat having an edge portion and a detent member on said edge portion, said detent member being shaped and positioned to enter one of said second passages when said mat is juxtaposed edge-to-edge to another, identical mat.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |