Control unit

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Description

FIG. 1 is a front elevational view of a control unit showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear plan view thereof;

FIG. 4 is a bottom elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side perspective view of FIG. 1; and,

FIG. 8 is a right side perspective view of FIG. 1.

Referenced Cited
U.S. Patent Documents
D260971 September 29, 1981 Littlefield
D277266 January 22, 1985 Littlefield
D287701 January 13, 1987 Foster
D317875 July 2, 1991 Mehta
4386649 June 7, 1983 Hines et al.
4388692 June 14, 1983 Jones et al.
4700168 October 13, 1987 Sirois et al.
5107918 April 28, 1992 McFarlane et al.
Other references
  • Cole-Palmer; Thermometry Controllers; .COPYRGT.1990; pp. 953 & 954.
Patent History
Patent number: D364573
Type: Grant
Filed: Mar 31, 1994
Date of Patent: Nov 28, 1995
Assignee: Accutron Systems Inc. (London)
Inventor: Ronald W. Pearsall (London)
Primary Examiner: Antoine Duval Davis
Law Firm: Baker & Daniels
Application Number: 0/20,734