Patent US3765256A successfully refreshed from Google Patents.
US3765256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low range high overload differential pressure transducer
Assignee: Solartron Electronics Inc
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Filing: 1971-12-30
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Granted: 1973-10-16
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Expires: 1991-12-30
Abstract
Abstract A bell crank flexure useful in connection with a differential transducer whereby a differential force is translated through the bell crank flexure to a guided beam to permit the positioning of strain gauges to be oppositely stressed on the imposition of a differential force and transducers employing the same, for example, differential pressure gauges employing such flexures.
Inventors
- 👤 R Schaberg
- 👤 P Perino
- 👤 R Helin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:48
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0051; G01L9/006; F; F15; F15B; F15B5/00; G01L13/00; G01L13/02; G01L13/025; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/20; Y10T74/20006; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
242 words
A transducer, including a force collector, a bell crank flexure connected to said force collector, said bell crank flexure comprising an elongated flexure means extending transversely to said force collectors and connected at one end of said elongated flexure means to said force collectors, a bar flexure operatively connected to the end of said elongated flexure means opposite to the point of connection of said elongated flexure means to the force collectors, said bar flexure comprising a pair of bores through said bar flexure and positioned in said bar flexure adjacent the end of the bar flexure opposite the point of connection of the elongated flexure means to said bar flexure, a pair of spaced bores through said bar flexure positioned adjacent the end of said bar flexure opposite the said first mentioned pair of bores, a slot extending from one of said second mentioned pair of bores and passing through one edge of said bar flexure, a slot extending from the other of said second mentioned bores to one of said first mentioned bores, a frame, means to fix said bar flexure in said frame at one side of said slots whereby on the differential movement of said force collectors a force is transmitted to said bar flexure and whereby the upper portion of said bar flexure adjacent the first mentioned bore moves as a guided beam to introduce reverse curvature passing through a neutral zone between said first mentioNed bores.
Claim 2
Dependent Claim
242 words
A transducer, including a force collector, a bell crank flexure connected to said force collector, said bell crank flexure comprising an elongated flexure means extending transversely to said force collectors and connected at one end of said elongated flexure means to said force collectors, a bar flexure operatively connected to the end of said elongated flexure means opposite to the point of connection of said elongated flexure means to the force collectors, said bar flexure comprising a pair of bores through said bar flexure and positioned in said bar flexure adjacent the end of the bar flexure opposite the point of connection of the elongated flexure means to said bar flexure, a pair of spaced bores through said bar flexure positioned adjacent the end of said bar flexure opposite the said first mentioned pair of bores, a slot extending from one of said second mentioned pair of bores and passing through one edge of said bar flexure, a slot extending from the other of said second mentioned bores to one of said first mentioned bores, a frame, means to fix said bar flexure in said frame at one side of said slots whereby on the differential movement of said force collectors a force is transmitted to said bar flexure and whereby the upper portion of said bar flexure adjacent the first mentioned bore moves as a guided beam to introduce reverse curvature passing through a neutral zone between said first mentioNed bores.
Claim 3
Dependent Claim
88 words
The bell crank flexure of claim 1 in which said elongated flexure means comprises a pair of leaf springs, one each of said leaf springs connected to one each of said force collectors adjacent end of said leaf springs adjacent one end of each of said leaf springs, a second frame, each of said leaf springs connected to second frame adjacent the ends of said leaf springs opposite to the first mentioned end of said leaf springs, said frame connected to said bar flexure adjacent said lower bores.
Claim 4
Dependent Claim
51 words
The bell crank flexure means of claim 1 in which said elongated flexure means comprises a rod, and a pair of flexible diaphragms, one of said flexible diaphragms connected to one end of said bar flexure means and the other end of said bar flexure means connected to the second diaphragm.
Claim 5
Dependent Claim
265 words
A differential pressure transducer comprising a pair of diaphragm chambers, pressure inlets to each of said diaphragm chambers, each diaphragm closing a diaphragm chamber, each of said diaphragms connected through a force collector to a bell crank flexure means, said bell crank flexure comprising an elongated flexure means extending transversely to said force collectors and connected at one end of said elongated flexure means to said force collectors, a bar flexure operatively connected to the end of said elongated flexure opposite to the point of connection of said elongated flexure means to the force collectors, said bar flexure comprising a pair of bores through said bar flexure and positioned in said bar flexure adjacent the end of the bar flexure opposite the point of connection of the elongated flexure means to said bar flexure, a pair of spaced bores through said bar flexure positioned adjacent the end of said bar flexure opposite the said first mentioned pair of bores, a slot extending from one of said second mentioned pair of bores and passing through one edge of said bar flexure, a slot extending from the other of said second mentioned bores to one of said first mentioned bores, a frame, means to fix said bar flexure in said frame at one side of said slots whereby on the differential movement of said force collectors a force is transmitted to said bar flexure and whereby the upper portion of said bar flexure adjacent the first mentioned bore moves as a guided beam to introduce reverse curvature passing through a neutral zone between said first mentioned bores.
Claim 6
Dependent Claim
265 words
A differential pressure transducer comprising a pair of diaphragm chambers, pressure inlets to each of said diaphragm chambers, each diaphragm closing a diaphragm chamber, each of said diaphragms connected through a force collector to a bell crank flexure means, said bell crank flexure comprising an elongated flexure means extending transversely to said force collectors and connected at one end of said elongated flexure means to said force collectors, a bar flexure operatively connected to the end of said elongated flexure opposite to the point of connection of said elongated flexure means to the force collectors, said bar flexure comprising a pair of bores through said bar flexure and positioned in said bar flexure adjacent the end of the bar flexure opposite the point of connection of the elongated flexure means to said bar flexure, a pair of spaced bores through said bar flexure positioned adjacent the end of said bar flexure opposite the said first mentioned pair of bores, a slot extending from one of said second mentioned pair of bores and passing through one edge of said bar flexure, a slot extending from the other of said second mentioned bores to one of said first mentioned bores, a frame, means to fix said bar flexure in said frame at one side of said slots whereby on the differential movement of said force collectors a force is transmitted to said bar flexure and whereby the upper portion of said bar flexure adjacent the first mentioned bore moves as a guided beam to introduce reverse curvature passing through a neutral zone between said first mentioned bores.
Claim 7
Dependent Claim
88 words
The bell crank flexure of claim 1 in which said elongated flexure means comprises a pair of leaf springs, one each of said leaf springs connected to one each of said force collectors adjacent end of said leaf springs adjacent one end of each of said leaf springs, a second frame, each of said leaf springs connected to second frame adjacent the ends of said leaf springs opposite to the first mentioned end of said leaf springs, said frame connected to said bar flexure adjacent said lower bores.
References Cited (Backward Citations)
US3195353A
Cited
US3222628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |