U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Device for sensing loads

Patent 4793193 Issued on December 27, 1988. Estimated Expiration Date: Icon_subject December 2, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3806471

Data entry system
Patent #: 4013835
Issued on: 03/22/1977
Inventor: Eachus ,   et al.

Electric infinite-range load-sensing transducer
Patent #: 4106370
Issued on: 08/15/1978
Inventor: Kraus ,   et al.

Pressure-sensitive resistors
Patent #: 4163204
Issued on: 07/31/1979
Inventor: Sado ,   et al.

Pressure sensitive resistor elements
Patent #: 4210895
Issued on: 07/01/1980
Inventor: Sado ,   et al.

Pressure transducer
Patent #: 4314228
Issued on: 02/02/1982
Inventor: Eventoff

Bounceless switch apparatus
Patent #: 4315238
Issued on: 02/09/1982
Inventor: Eventoff

Force transducer
Patent #: 4479392
Issued on: 10/30/1984
Inventor: Froeb ,   et al.

Force transducer Patent #: 4493219
Issued on: 01/15/1985
Inventor: Sharp ,   et al.

Inventor

Application

No. 06/937096 filed on 12/02/1986

US Classes:

73/862.043, Three dimensional (e.g., x, y, z axes)338/99, Surfaces pressed together (e.g., compressible type)73/862.68By measuring electrical properties

Examiners

Primary: Ruehl, Charles A.

International Classes

B60D 1/06 (20060101)
B60D 1/00 (20060101)
G01L 5/16 (20060101)
G01L 1/20 (20060101)

Foreign Application Priority Data

1985-01-31 WO

Abstract

A device for sensing loads comprises rigid first and second members having opposed surfaces and a sensor subjected to compressive loading between the opposed surfaces. The sensor comprises an electrically conductive thin layer of material in conductive engagement with spaced apart conductors so as to provide an electrical path between the conductors through the conductive layer. The surface of the conductive layer is of undulating form whereby the conductive engagement will vary with variation in loading on the sensor.

Other References

  • Amase--"New Pressure Conductive Rubber Changes . . . Concepts", JEE, No. 145, Jun. 1979, pp. 20-24
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