US3725638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat radiating assembly and apparatus for permitting ice blocked water to drain off of house roofs
Assignee: ARCTIC ROOF DEICING CORP
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Filing: 1971-06-01
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Granted: 1973-04-03
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Expires: 1991-06-01
Abstract
Abstract A heat radiating assembly and an apparatus using a plurality of heat radiating assemblies for melting ice on the roof thereby permitting ice blocked water to drain off of the roof. The heat radiating assembly comprises a flexible heat generating element, a shielding element for protecting the flexible heat generating element and for radiating heat produced by the flexible heat generating element, and an electric current source for heating up the flexible heat generating element. The roof ice melting apparatus utilizes a plurality of heat radiating assemblies with each one being spaced from the others and each one extends inwardly and upwardly from at least one roof edge. When heated up, the heat radiating assemblies of the roof ice melting apparatus create water draining channels to permit ice blocked water to drain off the roof due to melting of the ice located adjacent each heat radiating assembly.
Inventors
- 👤 E Solin
- 👤 R Post
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:05
CPC Classifications
H; H05; H05B; H05B3/00; E; E04; E04D; E04D13/00; E04D13/10; E04D13/103; H05B2214/00; H05B2214/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
210 words
An electric heat generating apparatus for melting ice and permitting ice blocked water to drain off of a house roof comprising, in combination, a plurality of heat radiating assemblies attached to said house roof, each of said plurality of heat radiating assemblies being spaced from each other and extending inwardly and upwardly from at least one edge of said roof; each of said heat radiating assemblies comprising a flat flexible heat generating element having an outer, flexible, moisture resistant, temperature variation insensitive, protective sheath, said heat generating element having at least one resistance wire located within said sheath; flat, rigid, shielding and heat radiating means for protecting said flexible heat generating element and for radiating heat produced by said flat flexible heat generating element; and electric current source means being electrically connected to said resistance wire of said flat flexible heat generating element; said electric current source means electrically connected to each of said plurality of heat radiating assemblies for permitting each of said plurality of heat radiating assemblies the capability of melting ice located adjacent to each of said plurality of heat radiating assemblies thereby enabling ice blocked water located on said roof to drain off through melted channels created by each of said plurality of heat radiating assemblies.
Claim 2
Dependent Claim
210 words
An electric heat generating apparatus for melting ice and permitting ice blocked water to drain off of a house roof comprising, in combination, a plurality of heat radiating assemblies attached to said house roof, each of said plurality of heat radiating assemblies being spaced from each other and extending inwardly and upwardly from at least one edge of said roof; each of said heat radiating assemblies comprising a flat flexible heat generating element having an outer, flexible, moisture resistant, temperature variation insensitive, protective sheath, said heat generating element having at least one resistance wire located within said sheath; flat, rigid, shielding and heat radiating means for protecting said flexible heat generating element and for radiating heat produced by said flat flexible heat generating element; and electric current source means being electrically connected to said resistance wire of said flat flexible heat generating element; said electric current source means electrically connected to each of said plurality of heat radiating assemblies for permitting each of said plurality of heat radiating assemblies the capability of melting ice located adjacent to each of said plurality of heat radiating assemblies thereby enabling ice blocked water located on said roof to drain off through melted channels created by each of said plurality of heat radiating assemblies.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein each of said plurality of heat radiating assemblies having only one end portion attached onto said roof.
Claim 4
Dependent Claim
28 words
The apparatus of claim 2 wherein said one end portion of each of said plurality of heat radiating assemblies being attached to said roof underneath a roof shingle.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 wherein each of said plurality of heat radiating assemblies being substantially parallel with respect to each other.
Claim 6
Dependent Claim
31 words
The apparatus of claim 1 including a metal roof edge element running along said one edge of said roof and in contact with each of said plurality of heat radiating assemblies.
Claim 7
Dependent Claim
31 words
The apparatus of claim 1 wherein each of said plurality of heat radiating assemblies being spaced from each other and extending inwardly and upwardly from both lower edges of said roof.
Claim 8
Dependent Claim
25 words
The apparatus of claim 1 wherein each of said plurality of heat radiating assemblies being from about 3 feet to about 5 feet in length.
Claim 9
Dependent Claim
24 words
The apparatus of claim 1 wherein each of said plurality of heat radiating assemblies being from about 1 to about 12 inches in width.
Claim 10
Dependent Claim
24 words
The apparatus of claim 7 wherein each of said plurality of heat radiating assemblies being from about 1 to about 12 inches in width.
Claim 11
Dependent Claim
16 words
The apparatus of claim 1 wherein said plurality of heat radiating assemblies being electrically connected together.
Claim 12
Dependent Claim
37 words
The apparatus of claim 10 including temperature controlled switch means electrically connected between said electric current source means and said plurality of heat radiating assemblies for turning said assemblies on or off depending on the external temperature.
Claim 13
Dependent Claim
20 words
The apparatus of claim 1 wherein said outer, flexible sheath of said flexible heat generating element comprising a rubberized layer.
Claim 14
Dependent Claim
14 words
The apparatus of claim 12 wherein said rubberized layer is a silicone rubber layer.
Claim 15
Dependent Claim
22 words
The apparatus of claim 1 wherein said shielding and heat radiating means comprises a metal sheath surrounding said flexible heat generating element.
Claim 16
Dependent Claim
36 words
The apparatus of claim 14 wherein said metal sheath comprises a first metal section and a second metal section, said flexible heat generating element being located between said first metal section and said second metal section.
Claim 17
Dependent Claim
70 words
The apparatus of claim 15 wherein said first metal section being substantially flat, said second metal section having a first curved portion and a second curved portion, one side end portion of said first metal section being held by said first curved portion of said second metal section, the other side end portion of said first metal section being held by said second curved portion of said second metal section.
Claim 18
Dependent Claim
22 words
The apparatus of claim 1 wherein said shielding and heat radiating means comprises a non-metallic sheath surrounding said flexible heat generating element.
Claim 19
Dependent Claim
13 words
The apparatus of claim 17 wherein said non-metallic sheath is made of plastic.
Claim 20
Dependent Claim
13 words
The apparatus of claim 17 wherein said non-metallic sheath is made of Teflon.
Claim 21
Dependent Claim
34 words
The apparatus of claim 1 wherein said outer, flexible sheath of said flexible heat generating element comprising a rubberized layer, said shielding and heat radiating means comprises a metal sheath surrounding said rubberized layer.
Claim 22
Dependent Claim
36 words
The apparatus of claim 1 including a metal channel strip extending inwardly and upwardly from said edge of said roof, one of said plurality of heat radiating assemblies being in contact with said metal channel strip.
Claim 23
Dependent Claim
76 words
The apparatus of claim 1 wherein said outer, flexible sheath of said flexible heat generating element comprising a silicone rubber layer, said shielding and heat radiating means comprises a metal sheath surrounding said silicone rubber layer, one end of said metal sheath being attached onto said roof, each of said plurality of heat radiating assemblies being from about 3 feet to about 5 feet in length and from about 1 to about 12 inches in width.
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |