US4763967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable resonant device
Assignee: General Scanning Inc
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Filing: 1986-11-18
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Granted: 1988-08-16
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Expires: 2006-11-18
Abstract
Abstract A dynamically resonant system including a linearly movable element having a neutral position and a range of excursion centered on the neutral position, a spring-like element for urging the movable element toward the neutral position, the resonant system having a natural resonant frequency dependent on the spring characteristics of the spring-like element, the spring-like element having a temperature sensitive member that causes the spring characteristics to vary with temperature of the member.
Inventors
- 👤 Mack J. Schermer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:39
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/10; B06B1/12; B06B1/14; G; G02; G02B; G02B7/00; G02B7/02; G02B7/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
A resonant system comprising a linearly movable element having a neutral position and a range of excursion centered on said neutral position, and a spring-like element for urging said movable element toward said neutral position, said resonant system having a natural resonant frequency dependent on the spring characteristics of said spring-like element, said spring-like element having a temperature sensitive member that causes said spring characteristics to vary with temperature of said member.
Claim 2
Dependent Claim
72 words
A resonant system comprising a linearly movable element having a neutral position and a range of excursion centered on said neutral position, and a spring-like element for urging said movable element toward said neutral position, said resonant system having a natural resonant frequency dependent on the spring characteristics of said spring-like element, said spring-like element having a temperature sensitive member that causes said spring characteristics to vary with temperature of said member.
Claim 3
Dependent Claim
20 words
The system of claim 1 wherein said temperature of said member is caused to vary by resistively heating said member.
Claim 4
Dependent Claim
33 words
The system of claim 2 wherein said member is an elongated metal piece, said heating is accomplished by forcing a current through said piece, and said heat causes said piece to change shape.
Claim 5
Dependent Claim
23 words
The system of claim 1 or 3 wherein said member is in tension and the degree of said tension varies with said temperature.
Claim 6
Dependent Claim
71 words
The system of claim 1 further comprising a stationary base, and wherein said spring-like element has two spaced apart ends fixed on supports associated with said base, said spring-like element being held in tension between said supports, said linearly-movable element is held on said spring-like element in a location between said ends, and changes in the temperature of said temperature-sensitive element cause corresponding changes in the tension on said spring-like element.
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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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |