Patent US4401880A successfully refreshed from Google Patents.
US4401880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to melt ice and snow on a roof structure
Assignee: Individual
•
Filing: 1981-11-19
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Granted: 1983-08-30
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Expires: 2001-11-19
Abstract
Abstract A device to melt ice and snow on a roof structure to provide channels for the drainage of water, the device being an elongated, rigid structure having a hinged end portion to extend over a gutter, having means in connection with the other end portion thereof to removably support the same, the device being formed of a highly conductive material having heating cables in contact with the outer structure thereof for heat transference and having a plurality of apertures in the upper surface thereof, the device being particularly designed to be installed either upon a dry roof or upon a snow or ice covered roof.
Inventors
- 👤 Claude E. Eizenhoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:16
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/10; E04D13/103; H; H05; H05B; H05B3/00; H05B2214/00; H05B2214/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
A roof surface ice and snow melting device comprising an elongated channel member of heat conductive material forming a housing, said channel member having a top wall, side walls and an open bottom, a heating cable disposed within said channel member, insulting means securing said cable in contrast with said wall, supporting means for said channel member, means hingedly securing to said channel member an end portion thereof, and said end portion extending over a gutter pipe.
Claim 2
Dependent Claim
77 words
A roof surface ice and snow melting device comprising an elongated channel member of heat conductive material forming a housing, said channel member having a top wall, side walls and an open bottom, a heating cable disposed within said channel member, insulting means securing said cable in contrast with said wall, supporting means for said channel member, means hingedly securing to said channel member an end portion thereof, and said end portion extending over a gutter pipe.
Claim 3
Dependent Claim
19 words
The structure of claim 1, wherein said top wall of said channel member has a multiplicity of apertures therein.
Claim 4
Dependent Claim
90 words
A roof surface ice and snow melting device comprising an elongated channel member having an open bottom, a top wall and adjoining side walls, a heating cable disposed within said channel member along the junctures of said top and side walls, an insulating member disposed within said channel member conforming thereto and securing said heating cable, means hingedly connecting to said channel member an end portion thereof, said end portion being angled in operating position to overlie a gutter pipe, and a line connecting said cable with a power source.
Claim 5
Dependent Claim
90 words
A roof surface ice and snow melting device comprising an elongated channel member having an open bottom, a top wall and adjoining side walls, a heating cable disposed within said channel member along the junctures of said top and side walls, an insulating member disposed within said channel member conforming thereto and securing said heating cable, means hingedly connecting to said channel member an end portion thereof, said end portion being angled in operating position to overlie a gutter pipe, and a line connecting said cable with a power source.
Claim 6
Dependent Claim
12 words
The structure set forth in claim 3 said heating cable being unitary.
Claim 7
Dependent Claim
17 words
The structure set forth in claim 3 said top wall having a multiplicity of apertures there along.
Claim 8
Dependent Claim
28 words
The structure set forth in claim 3, wherein said top wall has a multiplicity of apertures therein, and said insulating member forms a chamber underlying said top wall.
Claim 9
Dependent Claim
16 words
The structure set forth in claim 3, including means removably securing said device in operating position.
Claim 10
Dependent Claim
27 words
The structure set forth in claims 1 or 3, wherein said channel member includes an exterior surface coating havinng a high coefficient of emissivity in radiating heat.
Claim 11
Dependent Claim
26 words
The structure set forth in claims 1 or 3, wherein said channel member includes an exterior surface having a high coefficient of emissivity in radiating heat.
Claim 12
Dependent Claim
28 words
The structure set forth in claim 1 or 3, wherein said channel member is of uniform thickness and adapted to be formed readily of flat stock sheet material.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |