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US4451817A
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Dynamometer transducer utilizing an amorphous metal
Assignee: Mettler Toledo GmbH Germany
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Filing: 1982-09-27
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Granted: 1984-05-29
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Expires: 2002-09-27
Abstract
Abstract The transducing apparatus for a dynamometer includes a band shaped measuring element which is subjected to a load-dependent tensile force. The measuring element is made of an amorphous metal. It is band-shaped and may have one or two necked-down portions whose resistance varies as a function of applied force. Such measuring element has particularly desirable mechanical characteristics such as high limits of permissible applied force, resistance to creep, low hysteresis, and stability with respect to temperature variations.
Inventors
- 👤 Hans-Rudolf Zulliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:03
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
60 words
In transducing apparatus having a member having a load-dependent deformation, and means for generating an electrical signal in response to said deformation, the improvement comprising a band-shaped measuring element made of amorphous metal constituting said member, said band-shaped measuring element having a length varying as a function of load applied thereto, said change in length constituting said load dependent deformation.
Claim 2
Dependent Claim
60 words
In transducing apparatus having a member having a load-dependent deformation, and means for generating an electrical signal in response to said deformation, the improvement comprising a band-shaped measuring element made of amorphous metal constituting said member, said band-shaped measuring element having a length varying as a function of load applied thereto, said change in length constituting said load dependent deformation.
Claim 3
Dependent Claim
31 words
Transducing apparatus as set forth in claim 1, wherein said band-shaped element has at least one necked-down portion, said necked-down portion having a resistance varying as a function of applied load.
Claim 4
Dependent Claim
32 words
Transducing apparatus as set forth in claim 1, wherein said measuring element has a first and second necked-down portion; and wherein said load is applied between said first and second necked-down portion.
Claim 5
Dependent Claim
32 words
Transducing apparatus as set forth in claim 1, wherein said transducing apparatus further requires a reset member; and wherein said measuring elements made of amorphous metal further constitutes a said reset member.
Claim 6
Dependent Claim
39 words
Transducing apparatus as set forth in claim 1, wherein said load dependent deformation causes a change in an electrical characteristic of said member; and wherein said electrical signal generating means is responsive to said changes in said electrical characteristic.
Claim 7
Dependent Claim
19 words
Transducing apparatus as set forth in claim 1, wherein said electrical characteristic is the resistance of said measuring element.
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) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |