Patent US4051396A successfully refreshed from Google Patents.
US4051396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulation to prevent fracture of piezoelectric high voltage mechanism
Assignee: Channel Products Inc
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Filing: 1974-12-17
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Granted: 1977-09-27
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Expires: 1994-12-17
Abstract
Abstract New and improved high voltage piezoelectric mechanisms are provided wherein the piezoelectric element is essentially coated or encapsulated in an insulating material which is sticky to the touch and relatively viscous. Useful materials include unhardened adhesive resins. Marked improvement in operating life and high temperature operation are obtained, and piezoelectric ceramic elements need not have load surfaces so flat that lapping is necessary.
Inventors
- 👤 Don A. Berlincourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:58
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/18; H02N2/183; F; F23; F23Q; F23Q3/00; F23Q3/002; H10; H10N; H10N30/00; H10N30/80; H10N30/88
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
15 words
A high voltage piezoelectric mechanism with piezoelectric element means essentially coated with viscid insulating material.
Claim 2
Dependent Claim
15 words
A high voltage piezoelectric mechanism with piezoelectric element means essentially coated with viscid insulating material.
Claim 3
Dependent Claim
21 words
A high voltage piezoelectic mechanism according to claim 1 in which the mechanism is an impact type piezoelectric high voltage mechanism.
Claim 4
Dependent Claim
18 words
A high voltage piezoelectric mechanism with piezoelectric element means essentially encapsulated on lateral surfaces in viscid insulating material.
Claim 5
Dependent Claim
18 words
A high voltage piezoelectric mechanism with piezoelectric element means essentially encapsulated on lateral surfaces in viscid insulating material.
Claim 6
Dependent Claim
21 words
A high voltage piezoelectric mechanism according to claim 3 in which the mechanism is an impact type high voltage piezoelectric mechanism
Claim 7
Dependent Claim
46 words
A high voltage piezoelectric mechanism comprising: Piezoelectric element means effective to provide an electrical spark source in response to actuation thereof; insulating body means housing said piezoelectric element means; encapsulation means of insulating material which is tacky to the touch essentially coating said piezoelectric element means.
Claim 8
Dependent Claim
46 words
A high voltage piezoelectric mechanism comprising: Piezoelectric element means effective to provide an electrical spark source in response to actuation thereof; insulating body means housing said piezoelectric element means; encapsulation means of insulating material which is tacky to the touch essentially coating said piezoelectric element means.
Claim 9
Dependent Claim
30 words
A high voltage piezoelectric mechanism according to claim 5 further comprising metallic adjacent end means abutted to load surfaces of said piezoelectric element means housed in said insulating body means.
Claim 10
Dependent Claim
21 words
A high voltage piezoelectric mechanism according to claim 6 in which the mechanism is an impact type high voltage piezoelectric mechanism.
Claim 11
Dependent Claim
29 words
A high voltage piezoelectric mechanism according to claim 6 in which said encapsulation means essentially fills any free space between said piezoelectric element means and said insulating body means.
Claim 12
Dependent Claim
65 words
An impact type high voltage piezoelectric mechanism comprising: A ceramic piezoelectric element effective to provide an electrical spark source in response to actuation thereof; metallic adjacent end means abutted to load surfaces of the piezoelectric element; the piezoelectric element encapsulated in a coating of a viscous, sticky insulating material; and insulating body means containing the piezoelectric element, the coating, and the metallic adjacent end means.
Claim 13
Dependent Claim
65 words
An impact type high voltage piezoelectric mechanism comprising: A ceramic piezoelectric element effective to provide an electrical spark source in response to actuation thereof; metallic adjacent end means abutted to load surfaces of the piezoelectric element; the piezoelectric element encapsulated in a coating of a viscous, sticky insulating material; and insulating body means containing the piezoelectric element, the coating, and the metallic adjacent end means.
Claim 14
Dependent Claim
23 words
An impact type high voltage piezoelectric mechanism according to claim 9 in which the viscous, sticky insulating material is an unhardened epoxy resin.
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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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |