Patent US3912907A successfully refreshed from Google Patents.
US3912907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp and mounting electric heater with a cable
Assignee: Fast Heat Element Manufacturing Co Inc
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Filing: 1974-07-19
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Granted: 1975-10-14
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Expires: 1994-07-19
Abstract
Abstract A band or strip heater including novel means to join shielded leads to the heater and to resist separation of or damaging the leads connected therewith; and to the novel construction and mounting of a cable clamp for electric heaters.
Inventors
- 👤 Frank Lodi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H05B3/02; H05B3/06; H05B3/565
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An electric heater including an inside metallic wall and an outside metallic wall, an electric heating element between said walls, means insulating said heating element from said walls, an aperture in the outer wall, an embossment in said outside wall extending across and opening into said aperture, a cable extending through said aperture and electrically connected to said heating element, a clamp surrounding said cable adjacent said aperture, said cable being electrically insulated from said walls and said clamp, said clamp having securing means for engaging said cable, and a foot portion on said clamp nested and limitedly slideably movable in said embossment for resiliently connecting said electric cable to said heating element.
Claim 2
Dependent Claim
113 words
An electric heater including an inside metallic wall and an outside metallic wall, an electric heating element between said walls, means insulating said heating element from said walls, an aperture in the outer wall, an embossment in said outside wall extending across and opening into said aperture, a cable extending through said aperture and electrically connected to said heating element, a clamp surrounding said cable adjacent said aperture, said cable being electrically insulated from said walls and said clamp, said clamp having securing means for engaging said cable, and a foot portion on said clamp nested and limitedly slideably movable in said embossment for resiliently connecting said electric cable to said heating element.
Claim 3
Dependent Claim
18 words
The device recited in claim 1, wherein the clamp member is comprised of two like arched clamping portions.
Claim 4
Dependent Claim
16 words
The heater recited in claim 1, wherein the foot portion extends radially from the clamp member.
Claim 5
Dependent Claim
20 words
The heater recited in claim 1, wherein said clamp securing means has radially extending ears to receive therein clamp screws.
Claim 6
Dependent Claim
25 words
The heater recited in claim 1, wherein an apertured metallic plate overlies the insulation in the area of the wall aperture beneath said foot portion.
Claim 7
Dependent Claim
25 words
The heater recited in claim 1, wherein the margins of one wall overlie the margins of the other wall to secure the two walls together.
Claim 8
Dependent Claim
18 words
The heater recited in claim 1, wherein the heater comprises a band heater and the walls are curved.
References Cited (Backward Citations)
US3125393A
Cited
US1679723A
Cited
US2406030A
Cited
US2545653A
Cited
US2795685A
Cited
US3137536A
Cited
US3056944A
Cited
US3324448A
Cited
US3730373A
Cited
US3808573A
Cited
US3831004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |