US3625808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite concrete and cement-wood fiber plank
Assignee: MARTIN FIREPROOFING CORP
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Filing: 1969-09-29
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Granted: 1971-12-07
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Expires: 1989-09-29
Abstract
Abstract A composite laminated concrete and cement-wood fiber plank consisting of a peripheral metal frame defining a substantially rectangular solid and having two edges with tongues and two edges with grooves, concrete in said frame, a cement-wood fiber plank portion having a first face extending slightly into said frame and a second face facing away from said frame and a border proximate the first face on which said frame rests, said concrete penetrating voids in the cement-wood fiber plank portion to effect a bond between the concrete and the cement-wood fiber portion, with the portion of the metal frame adjacent the cementwood fiber plank portion being of a slightly smaller perimeter than the perimeter of the cement-wood fiber plank portion and the perimeter of the portion of the frame above the tongues and the grooves.
Inventors
- 👤 Charles A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:39
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/38; E04C2/384; E04C2/02; E04C2/26; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
186 words
A composite laminated concrete and cement-wood fiber plank construction comprising a peripheral frame defining a substantially rectangular solid, concrete in said peripheral frame and bonded thereto with said concrete having a first face and a second face, a cement-wood fiber plank portion including voids therein and having a third face and a fourth face with said third face of said cement-wood fiber plank in contiguous relationship to said first face of said concrete, edge portions on said third face in contiguous relationship with said frame, said concrete penetrating said voids in said cement-wood fiber plank portion to effect a bond therebetween, said second face of said cement-wood fiber plank portion and said fourth face of said concrete defining the outer faces of said plank, said frame including outer edge portions substantially coextensive with said first face of said concrete, said outer edge portions defining an inner perimeter, and a protuberance on said cement-wood fiber plank portion having an outer perimeter of substantially the same size as said inner perimeter, said protuberance extending into said inner perimeter to locate said frame on said cement-wood fiber plank portion.
Claim 2
Dependent Claim
135 words
A composite laminated concrete and cement-wood fiber plank construction as set forth in claim 2 wherein said frame includes two sides having tongues and two sides having grooves, with said tongues and grooves being located substantially on the central portion of the sides of said frame, said frame including an upper side portion above said tongues and grooves and a lower side portion below said tongues and grooves, said upper side portions extending laterally outwardly beyond said lower side portions to provide spaces between lower side portions of assembled adjacent planks for accommodating mounting clips, said cement-wood fiber plank having a peripheral dimension which is approximately equal to the peripheral dimension of said upper side portions and in line therewith so as to conceal said spaces between said lower side portions of assembled adjacent planks.
Claim 3
Dependent Claim
30 words
A composite laminated concrete and cement-wood fiber plank construction as set forth in claim 2 wherein said edge portions of said third face are in abutting relationship with said frame.
Claim 4
Dependent Claim
29 words
A composite laminated concrete and cement-wood fiber plank construction as set forth in claim 4 including a metal reinforcing mesh embedded in said concrete proximate said first face thereof.
Claim 5
Dependent Claim
135 words
A composite laminated concrete and cement-wood fiber plank construction as set forth in claim 5 wherein said frame includes two sides having tongues and two sides having grooves, with said tongues and grooves being located substantially on the central portion of the sides of said frame, said frame including an upper side portion above said tongues and grooves and a lower side portion below said tongues and grooves, said upper side portions extending laterally outwardly beyond said lower side portions to provide spaces between lower side portions of assembled adjacent planks for accommodating mounting clips, said cement-wood fiber plank having a peripheral dimension which is approximately equal to the peripheral dimension of said upper side portions and in line therewith so as to conceal said spaces between said lower side portions of assembled adjacent planks.
Claim 6
Dependent Claim
182 words
A composite laminated concrete and cement-wood fiber plank construction comprising a peripheral frame defining a substantially rectangular solid, concrete in said peripheral frame and bonded thereto with said concrete having a first face and a second face, a cement-wood fiber plank portion including voids therein and having a third face and a fourth face with said third face of said cement-wood fiber plank in contiguous relationship to said first face of Said concrete, and edge portions on said third face in contiguous relationship with said frame, means bonding said cement-wood fiber plank portion relative to said concrete, said second face of said cement-wood fiber plank portion and said fourth face of said concrete defining the outer faces of said plank, said frame including outer edge portions substantially coextensive with said first face of said concrete, said outer edge portions defining an inner perimeter, and a protuberance on said cement-wood fiber plank portion having an outer perimeter of substantially the same size as said inner perimeter, said protuberance extending into said inner perimeter to locate said frame on said cement-wood fiber plank portion.
Claim 7
Dependent Claim
30 words
A composite laminated concrete and cement-wood fiber plank construction as set forth in claim 7 wherein said edge portions of said third face are in abutting relationship with said frame.
Claim 8
Dependent Claim
167 words
A composite laminated concrete and cement-wood fiber plank construction comprising a peripheral frame defining a substantially rectangular solid, said frame having an inner portion and an outer portion, concrete within said inner portion of said peripheral frame and bonded thereto with said concrete having a first face, a cement-wood fiber plank portion including voids therein and having a second face and a third face with said second face of said cement-wood fiber plank being in contiguous relationship to said first face of said concrete, said concrete penetrating said voids in said cement-wood fiber plank portion to effect a bond therebetween in the area of said first and second faces, said cement-wood fiber plank portion including a portion lying outside of said peripheral frame and covering a portion of said outer portion of said frame thereby to obstruct said outer portion of said frame from view when said plank is installed, and said third face of said cement-wood fiber plank portion defining an outer surface of said plank.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |