US3754438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load measuring device
Assignee: United States Department of the Navy
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Filing: 1972-05-25
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Granted: 1973-08-28
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Expires: 1992-05-25
Abstract
Abstract This disclosure is directed to a load bearing fixture and more particularly to a fixture to which strain gauges may be secured to detect small changes in load compared to the load. The fixture is further suitable for handling overloads which are many times that of the load.
Inventors
- 👤 W Matson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:37
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
A load measuring device which comprises: a support hub, a pair of oppositely disposed identical cantilevers extending from said support hub, a load bearing bar, means supported by the outer end of said cantilevers supporting said load bearing bar parallel with said cantilevers, said means supporting said load bearing bar parallel with said cantilevers including a fulcrum means which coacts with the outer end of said cantilevers to permit vertical movement of said cantilevers, means for supporting said device in place by said hub, means for securing a load from the center of said load bearing bar, and a pair of strain gages secured to each of said cantilevers equidistant from said hub with one strain gage of said pair on the upper surface of said cantilever and one on the lower surface thereof, said strain gages electrically wired for operation as a Wheatstone bridge for determining load supported by said device.
Claim 2
Dependent Claim
152 words
A load measuring device which comprises: a support hub, a pair of oppositely disposed identical cantilevers extending from said support hub, a load bearing bar, means supported by the outer end of said cantilevers supporting said load bearing bar parallel with said cantilevers, said means supporting said load bearing bar parallel with said cantilevers including a fulcrum means which coacts with the outer end of said cantilevers to permit vertical movement of said cantilevers, means for supporting said device in place by said hub, means for securing a load from the center of said load bearing bar, and a pair of strain gages secured to each of said cantilevers equidistant from said hub with one strain gage of said pair on the upper surface of said cantilever and one on the lower surface thereof, said strain gages electrically wired for operation as a Wheatstone bridge for determining load supported by said device.
Claim 3
Dependent Claim
62 words
A load measuring device as claimed in claim 1; in which, said load bearing bar includes an axially aligned hollow section, a stud screw threaded into said hub coaxial therewith, said stud including a flange on its free end, said flange assembled within said hollow section whereby the flange cooperates with said hub and said hollow section to provide an overload protector.
Claim 4
Dependent Claim
27 words
A load measuring device as claimed in claim 2; wherein, said stud is adjustable relative to said hub and said hollow section for providing different overload values.
Claim 5
Dependent Claim
29 words
A load measuring device as claimed in claim 3; which includes, an adjustable means in axial alignment with said stud for combining therewith to adjust for different preload settings.
References Cited (Backward Citations)
US2582886A
Cited
US3548650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |