US4074565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory-wire strain gage
Assignee: Slope Indicator Co
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Filing: 1977-02-17
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Granted: 1978-02-21
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Expires: 1997-02-17
Abstract
Abstract A vibratory-wire strain gage has mounting flanges integral to the instrument for disposition of the wire and its low-profile casing in intimate, substantially coplanar relation to the measuring surface.
Inventors
- 👤 Richard K. Harris
- 👤 (Charles) Bill (William) Jewsbury
- 👤 Dale W. Shoup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:10
CPC Classifications
G; G01; G01B; G01B17/00; G01B17/04; Y; Y10; Y10S; Y10S73/00; Y10S73/01
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
A vibratory-wire strain gage, comprising: an elongated metallic base strip adapted for rigid attachment to a structural member; a metal tube having one side rigidly fused to said strip along its length; a vibratory-wire extending coaxially through said tube in spaced apart relation to the inner wall thereof; each end of said tube being collapsed into squeezegripping relation to the wire end therein; and said wire having a predetermined tension which is maintained by said gripping relations.
Claim 2
Dependent Claim
77 words
A vibratory-wire strain gage, comprising: an elongated metallic base strip adapted for rigid attachment to a structural member; a metal tube having one side rigidly fused to said strip along its length; a vibratory-wire extending coaxially through said tube in spaced apart relation to the inner wall thereof; each end of said tube being collapsed into squeezegripping relation to the wire end therein; and said wire having a predetermined tension which is maintained by said gripping relations.
Claim 3
Dependent Claim
37 words
A strain gage according to claim 1 in which the fusedtogether base strip and tube have a modulus of elasticity comparable to that of a structural member with which said gage is rigidly associated for strain determinations.
Claim 4
Dependent Claim
35 words
A strain gage according to claim 1 in which the spacing of the axis of said wire under tension relative the bottomside of said base strip is between about 1/32 inch and about 1/8 inch.
Claim 5
Dependent Claim
43 words
A strain gage according to claim 1 in which there is a sleeve surrounding each end of said wire within an end of the tube and each said tube end, and said sleeve is collapsed into gripping relation to the wire end therein.
Claim 6
Dependent Claim
19 words
A strain gage according to claim 4 in which each collapsed tube end and sleeve therein is fused together.
Claim 7
Dependent Claim
27 words
A strain gage according to claim 1 in which said tube is longer than said base strip and each tube end extends beyond the related strip end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |