Patent US4075459A successfully refreshed from Google Patents.
US4075459A
Expired / Lapsed
US
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Voltage tapping in electrical heating elements
Assignee: Eichenauer Heizelemente GmbH and Co KG
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Filing: 1975-12-23
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Granted: 1978-02-21
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Expires: 1995-12-23
Abstract
Abstract A heater element for an electrical appliance (especially one having a blower, such as a fan heater, hair drier or the like) consists of a resistance heating wire looped in linear formation (e.g. zig-zag) and held transversely of the air flow direction by at least one support plate disposed parallel to said direction. The element has a voltage tapping point at the tip of one of the loops which projects beyond the other loops and has its tip fixed to an insulating panel parallel to said support plate. Said tip may be riveted or secured by an eye in a recess in said insulating plate.
Inventors
- 👤 Ludwig Lieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:35
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/16; H05B3/02; H05B3/06; H05B2203/00; H05B2203/002; H05B2203/004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
A heater element for an electrical appliance, said element consisting of a resistance heating wire which is looped as a series of reaches arranged in linear formation and having a plurality of tips with the loops being held against displacement, in planes disposed in succession transversely of the flow direction of the air, by at least one support plate which is arranged parallel to the flow direction, and a voltage tapping on the loops for providing an electrical supply to a component of the appliance, wherein at least one insulating material plate is arranged approximately parallel to said at least one support plate outside the region of the loops, and at least one of the loops, serving as a voltage tapping, projects beyond the other loops and the tip of said at least one loop is attached to one of said at least one insulating plate to form an electrical voltage tap connection.
Claim 2
Dependent Claim
153 words
A heater element for an electrical appliance, said element consisting of a resistance heating wire which is looped as a series of reaches arranged in linear formation and having a plurality of tips with the loops being held against displacement, in planes disposed in succession transversely of the flow direction of the air, by at least one support plate which is arranged parallel to the flow direction, and a voltage tapping on the loops for providing an electrical supply to a component of the appliance, wherein at least one insulating material plate is arranged approximately parallel to said at least one support plate outside the region of the loops, and at least one of the loops, serving as a voltage tapping, projects beyond the other loops and the tip of said at least one loop is attached to one of said at least one insulating plate to form an electrical voltage tap connection.
Claim 3
Dependent Claim
41 words
A heater element according to claim 1, wherein the said insulating plate comprises at least one recess in which is fixed a loop tip, each of the said at least one tips at least projecting into respective ones of said recess.
Claim 4
Dependent Claim
19 words
A heater element according to claim 2, wherein the loop tip is secured by an eye in the recess.
Claim 5
Dependent Claim
30 words
A heater element according to claim 1, wherein said loop tips extending in one direction lie in a single plane and said insulating plate is spaced from said single plane.
References Cited (Backward Citations)
GB317517A
Cited
US3237142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |