US3576383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric ignition mechanism
Assignee: Ransen Corp
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Filing: 1969-07-30
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Granted: 1971-04-27
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Expires: 1989-07-30
Abstract
Abstract A piezoelectric ignition mechanism which produces a series of voltage surges so as to create a series of sparks across spaced terminals rather than a single spark upon impacting a piezoelectric crystal. This result is attained by using a buffer which causes the crystal to reverberate.
Inventors
- 👤 Douglas S Fuller
- 👤 Hugh F Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/18; H02N2/183; F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287; F23Q3/00; F23Q3/002
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
24 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said buffer comprises at least one disc-shaped member.
Claim 2
Dependent Claim
23 words
A mechanism for creating an electrical discharge as defined in claim 2 further characterized in that said disc-shaped member has an opening therein.
Claim 3
Dependent Claim
25 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said buffer comprises a relatively thick, solid end plate.
Claim 4
Dependent Claim
29 words
A mechanism for creating an electrical discharge as defined in claim 4 further characterized in that said end plate has extensions on opposite ends thereof forming a bridge shape.
Claim 5
Dependent Claim
31 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said impact means comprises a hammer which is urged against piezoelectric crystal by a spring.
Claim 6
Dependent Claim
38 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized by a first housing enclosing said piezoelectric crystal and said impact means are in axial alignment and are firmly held within said first housing.
Claim 7
Dependent Claim
35 words
A mechanism for creating an electrical discharge as defined in claim 7 further characterized in that said buffer is mounted within said first housing between said crystal and the top portion of the first housing.
Claim 8
Dependent Claim
68 words
A mechanism for creating an electrical discharge as defined in claim 7 further characterized in that a second housing is telescopically received over said first housing, in which a fingerpiece is fixed to said second housing, means on said fingerpiece which engages said hammer and depresses it against the bias of the spring and releases said hammer after a predetermined amount of energy is stored in said spring.
Claim 9
Dependent Claim
32 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized in that said first housing is a block having an opening therein for the reception of said crystal.
Claim 10
Dependent Claim
40 words
A mechanism for creating an electrical discharge as defined in claim 10 further characterized in that said hammer is pivotally attached to said block and the hammerhead is in axial alignment with said crystal so as to strike the latter.
Claim 11
Dependent Claim
81 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized in that a fuel reservoir is adjacent said crystal, said fuel reservoir has a burner valve mounted on one end thereof, a fingerpiece mounted on said support to actuate the burner valve and the impact means, an electrode mounted adjacent said burner valve and electrically connected to said crystal such that upon actuation of said impact means, a spark ignites the gas emanating from said burner valve.
Claim 12
Dependent Claim
33 words
A mechanism for creating an electrical discharge as defined in claim 1 further characterized by a fuel reservoir mounted adjacent said crystal and having a flange thereon upon which said crystal is received.
References Cited (Backward Citations)
US3425783A
Cited
US3486075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |