Level sensing switch


FIG. 1 is a perspective view of a level sensing switch showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and

FIG. 8 is a perspective view of a second embodiment of the level sensing switch showing the sensing probe extending from the bottom thereof. The broken line showing is for illustrative purposes only and forms no part of the claimed design;

FIG. 9 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
3941956 March 2, 1976 Delin et al.
4392032 July 5, 1983 Roach, II
4695685 September 22, 1987 Fleckenstein et al.
Foreign Patent Documents
0102877 January 1938 AUX
Other references
  • Signal Conditioners on p. 301 of New Equipment Design, 3-85.
Patent History
Patent number: D308193
Type: Grant
Filed: May 1, 1987
Date of Patent: May 29, 1990
Inventor: Mark K. Gaalswyk (Welcome, MN)
Primary Examiner: Susan J. Lucas
Assistant Examiner: Joel Sincavage
Law Firm: Henderson & Sturm
Application Number: 7/44,570