Security lockbox with visual inspection window for temperature controls on swimming pool and spa heaters

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Description

FIG. 1 is a front elevational view of a security lockbox with visual inspection window for temperature controls on swimming pool and spa heaters showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top, front, and right side perspective view thereof; and,

FIG. 7 is a top, rear, and left side perspective view thereof.

Referenced Cited
U.S. Patent Documents
D99582 May 1936 Moore
D129967 October 1941 Lambert
D181303 October 1957 Lombard, Jr.
D315519 March 19, 1991 Odum, Jr. et al.
3729871 October 1966 Bright
4374541 February 22, 1983 Hoberman
Other references
  • Hardware Age (Aug. 1989) p. 310, Disconnect Switch.
Patent History
Patent number: D347193
Type: Grant
Filed: May 19, 1992
Date of Patent: May 24, 1994
Inventor: Ricky G. Keyser (West Palm Bch., FL)
Primary Examiner: Brian N. Vinson
Application Number: 7/886,017
Classifications
Current U.S. Class: Regulator Or Control (D10/49)