US3916348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-compensated surface-propagated wave energy device
Assignee: RCA Corp
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Filing: 1975-01-31
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Granted: 1975-10-28
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Expires: 1995-01-31
Abstract
Abstract An acoustic or optic surface-propagated wave energy device comprising a crystal having a surface along which energy is propagated and in which propagation path length changes and propagation velocity changes in the surface-wave which normally occur in response to temperature changes are compensated for by bending the crystal in response to bending of a bimetallic strip connected to the device.
Inventors
- 👤 Minoru Toda
- 👤 Susumu Osaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:11
CPC Classifications
H; H03; H03H; H03H3/00; H03H3/007; H03H3/08; H03H3/10; G; G10; G10K; G10K11/00; G10K11/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A temperature-compensating surface-propagated wave energy device comprising: a crystal which is capable of propagating energy waves along a propagation path on a surface of said crystal, the length of said propagation path being dependent upon the temperatures to which said crystal is subjected, bimetallic strip means of a type capable of bending to a degree directly proportionate to a particular temperature to which said strip means is subjected, and means connecting said bimetallic strip means to said crystal such that bending of said strip means causes bending of said crystal to change the length of said propagation path in a manner to compensate for dimensional changes in the length of said path due to temperature changes.
Claim 2
Dependent Claim
116 words
A temperature-compensating surface-propagated wave energy device comprising: a crystal which is capable of propagating energy waves along a propagation path on a surface of said crystal, the length of said propagation path being dependent upon the temperatures to which said crystal is subjected, bimetallic strip means of a type capable of bending to a degree directly proportionate to a particular temperature to which said strip means is subjected, and means connecting said bimetallic strip means to said crystal such that bending of said strip means causes bending of said crystal to change the length of said propagation path in a manner to compensate for dimensional changes in the length of said path due to temperature changes.
Claim 3
Dependent Claim
27 words
A device according to claim 1 in which said bimetallic strip means comprises a stack of bimetallic strips wherein alternate strips are orientated in the same direction.
Claim 4
Dependent Claim
26 words
A device according to claim 1 in which said bimetallic strip means has a ''''U''''-shape and said crystal is suspended between the legs of the ''''U.''''
Claim 5
Dependent Claim
53 words
A device according to claim 1 in which said bimetallic strip means consists of two said strips each being suspended with corresponding surfaces in the same plane, at one end thereof, and in which said crystal is mounted between the ends of said strips opposite to the ends from which they are suspended.
Claim 6
Dependent Claim
32 words
A device according to claim 1 in which said crystal comprises a thin film of a single crystal, high refractive index, light-transmitting material grown on a substrate of lower refractive index material.
Claim 7
Dependent Claim
80 words
A device according to claim 1 in which said bimetallic strip means comprises two of said strips having similar sides facing each other, said strips being disposed with corresponding surfaces in parallel planes with one end of each strip rigidly mounted and the other end of each strip free to move, said crystal being mounted between said free ends of said strips such that it bends in response to movement of said free ends of said strips toward each other.
References Cited (Backward Citations)
US3723915A
Cited
US3786373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |