Patent US4785215A successfully refreshed from Google Patents.
US4785215A
Expired / Lapsed
US
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Resonant element force transducer for acceleration sensing
Assignee: Israel Aircraft Industries Ltd
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Filing: 1987-11-05
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Granted: 1988-11-15
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Expires: 2007-11-05
Abstract
Abstract A resonant element force transducer comprising a doubled back beam comprising a single transducer element having a crossmember to one side of which there extends integrally formed therewith at least a pair of coplanar outer beams of substantially equal length and at least one inner beam coplanar with and disposed between the outer beams in substantially parallel fashion, the free ends of the outer beams being coupled to one of a first mounting pad and a second mounting pad, the free end of the at least one inner beam being coupled to the other of the first and second mounting pads.
Inventors
- 👤 Joab J. Blech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:47
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/097; G01P2015/0805; G01P2015/0822; G01P2015/0825; G01P2015/0828
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
101 words
A resonant element force transducer comprising; a doubled back beam comprising a single transducer element having a crossmember to one side of which there extends integrally formed therewith at least a pair of coplanar outer beams of substantially equal length and at least one inner beam coplanar with and disposed between said outer beams in substantially parallel fashion, the free ends of said outer beams being coupled to one of a first mounting pad and a second mounting pad, the free end of said at least one inner beam being coupled to the other of said first and second mounting pads.
Claim 2
Dependent Claim
101 words
A resonant element force transducer comprising; a doubled back beam comprising a single transducer element having a crossmember to one side of which there extends integrally formed therewith at least a pair of coplanar outer beams of substantially equal length and at least one inner beam coplanar with and disposed between said outer beams in substantially parallel fashion, the free ends of said outer beams being coupled to one of a first mounting pad and a second mounting pad, the free end of said at least one inner beam being coupled to the other of said first and second mounting pads.
Claim 3
Dependent Claim
59 words
The transducer of claim 1 wherein said inner beam is a resonator provided as a double beam tuning fork which has its free ends terminated in said first mounting pad for coupling to a support structure, said outer beams providing a vibration isolator having its free ends terminated in said second mounting pad for coupling to a proof mass.
Claim 4
Dependent Claim
58 words
The transducer of claim 1 wherein said inner beam is a resonator provided as a double beam tuning fork which has its free ends terminated in said first mounting pad for coupling to a proof mass, said outer beams providing a vibration isolator having its free ends terminated in said secondmounting pad for coupling to a support structure.
Claim 5
Dependent Claim
29 words
The transducer of claim 2 wherein said vibration isolator is shaped symmetrically with respect to said resonator, each of said vibration isolator outer beams having at least one bend.
Claim 6
Dependent Claim
29 words
The transducer of claim 3 wherein said vibration isolator is shaped symmetrically with respect to said resonator, each of said vibration isolator outer beams having at least one bend.
Claim 7
Dependent Claim
58 words
The transducer of claim 1 wherein said inner beam is a resonator provided as a single beam resonator which has its free cnd terminated in said first mounting pad for coupling to a support structure, said outer beams providing a vibration isolator having its free ends terminated in said second mounting pad for coupling to a proof mass.
Claim 8
Dependent Claim
58 words
The transducer of claim 1 wherein said inner beam is a resonator provided as a single beam resonator which has its free end terminated in said first mounting pad for coupling to a proof mass, said outer beams providing a vibration isolator having its free ends terminated in said second mounting pad for coupling to a support structure.
Claim 9
Dependent Claim
28 words
The transducer of claim 6 further comprising a pair of vibration isolation structures, each one of said pair of structures supporting an end of said single beam resonator.
Claim 10
Dependent Claim
28 words
The transducer of claim 7 further comprising a pair of vibration isolation structures, each one of said pair of structures supporting an end of said single beam resonator.
Claim 11
Dependent Claim
110 words
The transducer of claim 1 wherein said doubled back beam is provided in a push-pull configuration as a pair of nested tuning forks extending to one side of and integrally formed with said crossmember, such that four beams extend from said crossmember in parallel fashion, said inner beam providing the tines of one of said tuning forks as a resonator having its free ends terminated in said first mounting pad for coupling to a support structure, said two outer beams providing the tines of the other of said tuning forks as a resonator having its free ends terminated in a said second mounting pad for coupling to a proof mass.
Claim 12
Dependent Claim
112 words
The transducer of claim 1 wherein said doubled back beam is provided in a push-pull configuration as a pair of nested tuning forks extending to one side of and integrally formed with said crossmember, such that four beams extend from said crossmember in parallel fashion, said inner beam providing the tines of one of said tuning forks as a beam pair having its free ends terminated in said first mounting pad for coupling to a proof mass, said two outer beams providing the tines of the other of said tuning forks as a beam pair having its free ends terminated in a said second mounting pad for coupling to a support structure.
Claim 13
Dependent Claim
11 words
The transducer of claim 1 adapted for use as an accelerometer.
Claim 14
Dependent Claim
11 words
The transducer of claim 2 adapted for use as an accelerometer.
Claim 15
Dependent Claim
11 words
The transducer of claim 3 adapted for use as an accelerometer.
Claim 16
Dependent Claim
11 words
The transducer of claim 4 adapted for use as an accelerometer.
Claim 17
Dependent Claim
11 words
The transducer of claim 5 adapted for use as an accelerometer.
Claim 18
Dependent Claim
11 words
The transducer of claim 6 adapted for use as an accelerometer.
Claim 19
Dependent Claim
11 words
The transducer of claim 7 adapted for use as an accelerometer.
Claim 20
Dependent Claim
11 words
The transducer of claim 9 adapted for use as an accelerometer.
Claim 21
Dependent Claim
11 words
The transducer of claim 10 adapted for use as an accelerometer.
Claim 22
Dependent Claim
11 words
The transducer of claim 11 adapted for use as an accelerometer.
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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) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |