Patent US3657518A successfully refreshed from Google Patents.
US3657518A
Expired / Lapsed
US
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Heating device for electrical actuation
Assignee: Standard Motor Products Inc
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Filing: 1970-04-14
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Granted: 1972-04-18
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Expires: 1990-04-14
Abstract
Abstract A heating device for electrical actuation is shown which includes an elongated convoluted support and an insulated electrical resistance wire disposed upon the support. A base member optionally underlies the support and is secured thereto. The support may be formed alternatively of a pair of superimposed members, a lateral inturned portion, or a pair of spaced lateral inturned portions or folded portions. Flange portions may also be optionally provided upon the base member for stiffening purposes.
Inventors
- 👤 James W Welsh
- 👤 Fred Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:16
CPC Classifications
H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
An electrically actuated heating device comprising, in combination, a pair of superimposed deformable substantially planar metallic members, a heat-producing resistance electrically conductive member having insulation surrounding the same longitudinally disposed between said metallic members and spaced from the sides thereof, said metallic members being secured to one another and retaining said heat-producing member therebetween by striking out portions of one member and securing said struck out portions to the other member, said metallic members being deformed into convoluted form.
Claim 2
Dependent Claim
79 words
An electrically actuated heating device comprising, in combination, a pair of superimposed deformable substantially planar metallic members, a heat-producing resistance electrically conductive member having insulation surrounding the same longitudinally disposed between said metallic members and spaced from the sides thereof, said metallic members being secured to one another and retaining said heat-producing member therebetween by striking out portions of one member and securing said struck out portions to the other member, said metallic members being deformed into convoluted form.
Claim 3
Dependent Claim
29 words
A device as described in claim 1 including an additional heat producing resistance electrically conductive member having insulation surrounding the same disposed parallel to said first-named heat producing member.
Claim 4
Dependent Claim
16 words
A device as described in claim 2 including a base member secured to said metallic members.
References Cited (Backward Citations)
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Cited
US2777300A
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US3043942A
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US3041569A
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US3539767A
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US3205342A
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US3453417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |