US3611241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting assembly for plurality of strain gages
Assignee: Weatherhead Co
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Filing: 1970-02-16
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Granted: 1971-10-05
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Expires: 1990-02-16
Abstract
Abstract A temperature-compensated strain gage pressure transducer is disclosed which includes a cylindrical pressure vessel having a thin-walled pressure chamber and a solid end portion. Two active strain gages are bonded to the thin-walled chamber to measure strain resulting from fluid pressure therein, and two temperature-compensating strain gages are bonded to the unstressed solid end portion. An adhesive-coated web serves as a mounting vehicle for carrying all of the strain gages simultaneously and for positioning them on the pressure vessel in predetermined positions. The adhesive-coated web holds the strain gages in position on the pressure vessel during curing of a strain gage adhesive which bonds the strain gages to the pressure vessel, and then serves as a permanent protective blanket for the gages. The entire strain gage assembly is then encapsulated by a heat-shrinkable polyolefin tubing and assembled within a metallic protective shroud.
Inventors
- 👤 Edward E Herceg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:36
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
An assembly comprising a plurality of strain-measuring gages and a mounting vehicle for precisely locating and holding said plurality of gages on a surface of a load-receiving member in predetermined arrangement with respect to each other and with respect to said surface, said mounting vehicle including carrier means simultaneously carrying said plurality of gages and holding means securing said plurality of gages to said carrier means in a predetermined position relative to said carrier and to each other, said holding means securing said carrier means to said load-receiving member in a predetermined position relative to sad load-receiving member so that said plurality of gages is located and held in said predetermined arrangement immediately adjacent said surface for permanent bonding thereto.
Claim 2
Dependent Claim
120 words
An assembly comprising a plurality of strain-measuring gages and a mounting vehicle for precisely locating and holding said plurality of gages on a surface of a load-receiving member in predetermined arrangement with respect to each other and with respect to said surface, said mounting vehicle including carrier means simultaneously carrying said plurality of gages and holding means securing said plurality of gages to said carrier means in a predetermined position relative to said carrier and to each other, said holding means securing said carrier means to said load-receiving member in a predetermined position relative to sad load-receiving member so that said plurality of gages is located and held in said predetermined arrangement immediately adjacent said surface for permanent bonding thereto.
Claim 3
Dependent Claim
38 words
An assembly as set forth in claim 1 wherein said holding means secures said carrier means to said load-receiving member substantially permanently so that said carrier means becomes a substantially permanent protective blanket for said plurality of gages.
Claim 4
Dependent Claim
31 words
An assembly as set forth in claim 2 wherein said carrier means is a flexible web and said holding means is an adhesive coating on one surface of said flexible web.
Claim 5
Dependent Claim
125 words
A strain gage instrument comprising a load-receiving member for being strained, and a plurality of strain gages bonded to said load-receiving member for measuring the strain of said load-receiving member, said plurality of gages being positioned on said load-receiving member in a predetermined arrangement by a mounting vehicle, said mounting vehicle including a flexible backing web having an adhesive coating on one surfacE, said adhesive coating simultaneously carrying said plurality of gages in a predetermined position relative to said web and said adhesive coating securing said mounting vehicle to said load-receiving member in a predetermined position relative to said load-receiving member to accurately locate said plurality of gages thereon in said predetermined arrrangement and to form a permanent protective blanket over said plurality of gages.
Claim 6
Dependent Claim
125 words
A strain gage instrument comprising a load-receiving member for being strained, and a plurality of strain gages bonded to said load-receiving member for measuring the strain of said load-receiving member, said plurality of gages being positioned on said load-receiving member in a predetermined arrangement by a mounting vehicle, said mounting vehicle including a flexible backing web having an adhesive coating on one surfacE, said adhesive coating simultaneously carrying said plurality of gages in a predetermined position relative to said web and said adhesive coating securing said mounting vehicle to said load-receiving member in a predetermined position relative to said load-receiving member to accurately locate said plurality of gages thereon in said predetermined arrrangement and to form a permanent protective blanket over said plurality of gages.
Claim 7
Dependent Claim
28 words
A strain gage instrument as set forth in claim 4 wherein said plurality of strain gages is a plurality of strain gage grid patterns on a common carrier.
Claim 8
Dependent Claim
24 words
A strain gage instrument as set forth in claim 4 wherein said strain gage and said mounting vehicle are encapsulated by a heat-shrinkable material.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |