Patent US4212348A successfully refreshed from Google Patents.
US4212348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-radiating floor board
Assignee: Individual
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Filing: 1978-04-11
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Granted: 1980-07-15
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Expires: 1998-04-11
Abstract
Abstract A kind of radiating floor board is disclosed which radiates heat. The floor board has a stratified structure comprising a metallic surface plate, a depressed metallic tube for hot water circulation located meanderingly under the plate, a heat insulating material and a base board.
Inventors
- 👤 Toshiyuki Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:43
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/12; F24D3/14; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A heat-radiating floor board which has a stratified structure, the board comprising a metallic surface plate having a lower surface; a metallic tube of noncircular cross section and having a substantial flat surface, fixed meanderinly with its said flat surface in contact with said lower surface of said plate with heat-reflecting aluminum adhesive tape, said tape being in contact with a portion of said tube and with portions of said plate adjacent to said tube; an intermediate layer of hard plastic foam strongly adhering to said metallic tube, said tape and said lower surface; and a wooden base board strongly adhering to said intermediate layer.
Claim 2
Dependent Claim
105 words
A heat-radiating floor board which has a stratified structure, the board comprising a metallic surface plate having a lower surface; a metallic tube of noncircular cross section and having a substantial flat surface, fixed meanderinly with its said flat surface in contact with said lower surface of said plate with heat-reflecting aluminum adhesive tape, said tape being in contact with a portion of said tube and with portions of said plate adjacent to said tube; an intermediate layer of hard plastic foam strongly adhering to said metallic tube, said tape and said lower surface; and a wooden base board strongly adhering to said intermediate layer.
Claim 3
Dependent Claim
55 words
A heat-radiating floor board according to claim 1, wherein edge portions of said metallic surface plate are bent downwardly to cover side surfaces of said intermediate layer, and wherein both tip ends of said metallic tube are of circular, cylindrical shape and extend outwardly from said intermediate layer in cut-out portions of the floor board.
Claim 4
Dependent Claim
48 words
A heat-radiating floor board according to claim 1, wherein said intermediate layer is of hard polyurethane foam formed after arrangement of other members inside a mold, said metallic surface plate is of aluminum, said metallic tube is of copper and said wooden base board is of veneer board.
Claim 5
Dependent Claim
48 words
A heat-radiating floor board according to claim 2, wherein said intermediate layer is of hard polyurethane foam formed after arrangement of other members inside a mold, said metallic surface plate is of aluminum, said metallic tube is of copper and said wooden base board is of veneer board.
Claim 6
Dependent Claim
31 words
A heat-radiating floor board according to claim 1, wherein said metallic tube has two substantially flat surfaces, said tube having a cross section substantially in shape of a partially flattened O.
References Cited (Backward Citations)
US1800150A
Cited
FR1362789A
Cited
US3251198A
Cited
DE2211254A1
Cited
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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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |