Pressure sensitive push button switch

- AbleNet
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Description

FIG. 1 is a top perspective view of a pressure sensitive push button switch showing our new design;

FIG. 2 is a side elevational view thereof; and

FIG. 3 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D165134 November 1951 Burger
D184840 April 1959 Voorlas
D274631 July 10, 1984 Smith, III et al.
3083278 March 1963 Mukai
3097273 July 1963 Denner
3246112 April 1966 Adams et al.
4246452 January 20, 1981 Chandler
4346276 August 24, 1982 Baader
Other references
  • Technical Aids and Systems for the Handicapped Inc., Pad No. 5805. Ludwig, A., Dead Man Control Device, Technical Digest No. 1, Jan. 1966. A Guide to Controls, Children's Hospital at Stanford, pp. 16, 19, 1982. Dufco Electronics, Inc., Multimode Control Systems, 1984. Linemaster Switch Corporation, GEM Foot Switch, p. 21.
Patent History
Patent number: D305022
Type: Grant
Filed: May 23, 1985
Date of Patent: Dec 12, 1989
Assignee: AbleNet (Minneapolis, MN)
Inventors: Leander Hallgren (St. Paul, MN), Theodore R. Rudy (St. Louis Park, MN), Cheryl A. Waite (Shoreview, MN)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Ruth Takemoto
Law Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
Application Number: 6/737,353
Classifications
Current U.S. Class: D13/32