Patent US4588324A successfully refreshed from Google Patents.
Patent US3654429A successfully refreshed from Google Patents.
US3654429A
Expired / Lapsed
US
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Heating arrangement
Assignee: Ideal Industries Inc
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Filing: 1970-07-27
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Granted: 1972-04-04
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Expires: 1990-07-27
Abstract
Abstract A hand tool for heat shrinking material having an elongated shield of generally U-shaped cross-section defining a trough for receiving a work piece. A resistance heater element is positioned inside the shield. The resistance heating element is constructed of U-shaped strips having flat, radiating surfaces positioned generally parallel to a work piece positioned in the trough. The U-shaped strips are integrally connected to each other at the ends of the strips alternately on opposite sides of the U''s to form a continuous electrical path through the resistance heating element. The strips are supported on insulated rods mounted in cups formed in the end walls of the shield.
Inventors
- 👤 Ronald A Strachan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:05
CPC Classifications
H; H05; H05B; H05B3/00; H05B2203/00; H05B2203/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
A hand held heating tool having a heater assembly, said heater assembly including: an elongated shield of generally U-shaped cross-section defining a work piece receiving trough, end walls formed as part of said shield with rod receiving cups formed in said end walls, an electrical resistance heating element positioned in said shield, said heating element including U-shaped strips of resistance material having generally flat radiating surfaces facing said trough, loops formed in said strips adjacent the ends thereof, insulated support rods extending through said loops and seated in said cups to support said strips in said shield, and means to connect said electrical resistance heating element to a source of electrical power.
Claim 2
Dependent Claim
112 words
A hand held heating tool having a heater assembly, said heater assembly including: an elongated shield of generally U-shaped cross-section defining a work piece receiving trough, end walls formed as part of said shield with rod receiving cups formed in said end walls, an electrical resistance heating element positioned in said shield, said heating element including U-shaped strips of resistance material having generally flat radiating surfaces facing said trough, loops formed in said strips adjacent the ends thereof, insulated support rods extending through said loops and seated in said cups to support said strips in said shield, and means to connect said electrical resistance heating element to a source of electrical power.
Claim 3
Dependent Claim
36 words
The heating tool of claim 1 further characterized in that each of said strips of resistance material is integrally connected to at least one adjoining strip to form a continuous electrical path through said heating element.
Claim 4
Dependent Claim
24 words
The heAting tool of claim 2 further characterized in that adjoining strips of resistance material are integrally connected at the ends of said strips.
References Cited (Backward Citations)
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US2620430A
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US3140387A
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Cited
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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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |