US3626149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally conductive concrete with heating means
Assignee: Superior Graphite Co
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Filing: 1970-01-02
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Granted: 1971-12-07
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Expires: 1990-01-02
Abstract
Abstract An improved ground covering and heating means is constructed by formulating graphited concrete containing about 35-85 percent graphite, based on the weight of the dry mix. The concrete is laid in combination with a suitable heating element beneath the upper surface. In the preferred embodiment, the graphited concrete is sandwiched with a lower layer of nongraphited concrete for added strength. In preparing the sandwich, the graphited concrete is preferably poured over the nongraphited concrete while the latter is still in a green state.
Inventors
- 👤 Peter R Carney
- 👤 Raymond F Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; E01C11/265; E01C7/00; E01C7/08; E01C7/10; E01C7/14; E01C7/145; C04B2111/00; C04B2111/00439; C04B2111/00465; Y; Y02; Y02B; Y02B30/00; Y10; Y10S; Y10S165/00; Y10S165/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A ground covering and heating means comprising a graphited concrete slab comprising Portland cement and about 35 to 85 percent graphite, based on the weight of the graphited concrete dry mix; and heating means for heating said slab below the upper surface thereof.
Claim 2
Dependent Claim
43 words
A ground covering and heating means comprising a graphited concrete slab comprising Portland cement and about 35 to 85 percent graphite, based on the weight of the graphited concrete dry mix; and heating means for heating said slab below the upper surface thereof.
Claim 3
Dependent Claim
17 words
The ground covering as defined in claim 1 wherein said heating means comprise an electric resistance wire.
Claim 4
Dependent Claim
19 words
The ground covering and heating means as defined in claim 2 wherein said wire is imbedded in said slab.
Claim 5
Dependent Claim
24 words
The ground covering and heating means as defined in claim 2 wherein said wire is in contact with a lower surface of said slab.
Claim 6
Dependent Claim
17 words
The ground covering and heating means as defined in claim 2 wherein said concrete further comprises sand.
Claim 7
Dependent Claim
21 words
The ground covering and heating means as defined in claim 2 further including a concrete base layer below said resistance wire.
Claim 8
Dependent Claim
21 words
The ground covering and heating means as defined in claim 6 wherein said graphited concrete contains about 50- 85 percent graphite.
Claim 9
Independent Claim
58 words
A method for forming a ground covering and heating means comprising: pouring a layer of nongraphited concrete; positioning heating means on said concrete; and pouring layer of graphited concrete over said nongraphited concrete and said heating means while said nongraphited concrete is in a green state, such graphited concrete comprising cement and about 35-85 percent graphite by weight.
Claim 10
Independent Claim
58 words
A method for forming a ground covering and heating means comprising: pouring a layer of nongraphited concrete; positioning heating means on said concrete; and pouring layer of graphited concrete over said nongraphited concrete and said heating means while said nongraphited concrete is in a green state, such graphited concrete comprising cement and about 35-85 percent graphite by weight.
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) | 1974-12-06 | 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 |