Patent US4015151A successfully refreshed from Google Patents.
US4015151A
Expired / Lapsed
US
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Piezoelectric igniter with a striking mechanism
Assignee: Braun GmbH
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Filing: 1975-10-30
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Granted: 1977-03-29
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Expires: 1995-10-30
Abstract
Abstract A piezoelectric igniter with a manually operable striking mechanism which comprises a hammer, a piezoelectric transducer, and an energy storing or compression spring acting on said hammer. The hammer is held in its rest position by a release device adapted to release the hammer when a definite compressive force is developed in the compression spring. A bounce plate is mounted at the end of the transducer facing the hammer and a return spring is provided between said bounce plate and said hammer. The transducer has a lateral clearance to a housing which receives all component parts.
Inventors
- 👤 Hans-Dieter Klauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:08
CPC Classifications
F; F23; F23Q; F23Q3/00; F23Q3/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A piezoelectric igniter with a striking mechanism, more especially for lighters, having a piezoelectric transducer, a hammer which is movable in the direction of the latter and which co-operates with a compression spring, a movement release device for said hammer, and a housing which receives these parts and adjacent the closed front end of which the piezoelectric transducer is arranged, wherein a bounce plate is mounted at the side face of the piezoelectric transducer facing said hammer, wherein said hammer and said bounce plate form magnetically conductive parts, and wherein at least one of these parts is provided with a permanent magnet.
Claim 2
Dependent Claim
102 words
A piezoelectric igniter with a striking mechanism, more especially for lighters, having a piezoelectric transducer, a hammer which is movable in the direction of the latter and which co-operates with a compression spring, a movement release device for said hammer, and a housing which receives these parts and adjacent the closed front end of which the piezoelectric transducer is arranged, wherein a bounce plate is mounted at the side face of the piezoelectric transducer facing said hammer, wherein said hammer and said bounce plate form magnetically conductive parts, and wherein at least one of these parts is provided with a permanent magnet.
Claim 3
Dependent Claim
36 words
A piezoelectric igniter as claimed in claim 1, wherein said magnetic bounce plate comprises a magnetically conductive plate which is provided with a projecting bounce mandrel, and further comprises a permanent magnet surrounding said bounce mandrel.
Claim 4
Dependent Claim
18 words
A piezoelectric igniter as claimed in claim 2, wherein said permanent magnet is annularly shaped and axially magnetized.
Claim 5
Dependent Claim
21 words
A piezoelectric igniter as claimed in claim 2, wherein the permanent magnet is movably mounted with respect to said bounce plate.
Claim 6
Dependent Claim
43 words
A piezoelectric igniter as claimed in claim 1, wherein the movement release device is a magnet retaining circuit having a permanent magnet accomodated within said hammer, wherein said hammer is provided in its impact region with a device for generating a stray flux.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |