US4685526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement in a load cell
Assignee: ULF LUNDMAN AB
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Filing: 1985-11-08
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Granted: 1987-08-11
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Expires: 2005-11-08
Abstract
Abstract The present invention relates to an arrangement in a load cell comprising a core of resilient material with strain gages mounted on either side of the core and connected to recording instruments or the like. The novel features are that the core consists of a composite, that the strain gages are attached to sheets for their stabilization prior to the mounting thereof on the core, the sheets being of a material bondable to said composite, and that surface layers are likewise of a material bondable to said composite of the core and disposed on the outer sides of the strain gages.
Inventors
- 👤 Lauri J. Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:22
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A load cell comprising a core of resilient plastic material, a pair of perforated sheets mounted on opposite sides of said core and having respective strain gages stably attached thereto, the material of said sheets bonding to the material of said core, and a pair of surface layers respectively placed over said sheets, the material of said surface layers bonding to the material of said core.
Claim 2
Dependent Claim
66 words
A load cell comprising a core of resilient plastic material, a pair of perforated sheets mounted on opposite sides of said core and having respective strain gages stably attached thereto, the material of said sheets bonding to the material of said core, and a pair of surface layers respectively placed over said sheets, the material of said surface layers bonding to the material of said core.
Claim 3
Dependent Claim
27 words
A load cell according to claim 1, wherein the material of each surface layer bonds to the material of the sheet over which that layer is placed.
Claim 4
Dependent Claim
15 words
A load cell according to claim 1, wherein said resilient plastic is a fiber-containing composite.
Claim 5
Dependent Claim
15 words
A load cell according to claim 3, wherein said composite includes nylon and carbon fibers.
Claim 6
Dependent Claim
18 words
A load cell according to claim 3, wherein said sheets and said surface layers are formed of plastic.
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) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |