US3742418A
Expired / Lapsed
US
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Electromechanical deflection sensing device
Assignee: Avery Weigh Tronix Ltd
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Filing: 1970-08-03
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Granted: 1973-06-26
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Expires: 1990-08-03
Abstract
Abstract A sensing device including an elongated beam having an outer surface of revolution and including a generally conical medial portion whose sides taper toward a point disposed on the beam''s longitudinal axis and located within an adjacent end portion in the beam. An elongated ceramic-encapsulated piezoresistive element is bonded through such encapsulating material to the outside of the beam''s medial portion, and is disposed in a common plane with the beam''s longitudinal axis.
Inventors
- 👤 G Randolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:52
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
17 words
The sensing device of claim 1, wherein said strain gage means comprises a bar of piezoresistive material.
Claim 2
Dependent Claim
12 words
The sensing device of claim 1, wherein said ceramic medium comprises glass.
Claim 3
Dependent Claim
56 words
The sensing device of claim 1, wherein said tapered region includes a zone on its outer surface having a surface finish with an index no greater than ten microinches (rms), said electrical strain gage means is sized to fit within the boundaries of said zone, and said ceramic bonding medium completely surrounds said strain gage means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |