Heater for plastic or polyvinyl chloride conduit

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a left front perspective of a heater for plastic or polyvinyl chloride conduit, showing our new design;

FIG. 2 is a front elevational view, thereof;

FIG. 3 is a rear elevational view, thereof;

FIG. 4 is a top plan view, thereof;

FIG. 5 is a bottom plan view, thereof;

FIG. 6 is a left end elevational view thereof;

FIG. 7 is a right end elevational view thereof; and

FIG. 8 is a front elevational view thereof, with the conduit support subframe in extended condition.

The representation of the piece of polyvinyl chloride conduit shown in broken lines in FIG. 8 is included solely for purposes of illustration, and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
4052593 October 4, 1977 Ebert
4749843 June 7, 1988 Abramson
Other references
  • Ensley Tool Co., Inc. Catalog 19 entitled Ensley Get-The-Job-Done Tools, cover page, index and p. 10, published prior to Jan. 1988.
Patent History
Patent number: D312682
Type: Grant
Filed: Jan 19, 1988
Date of Patent: Dec 4, 1990
Inventors: Michael D. Kirkes (Merced, CA), Steven P. Wallace (Turlock, CA)
Primary Examiner: James M. Gandy
Assistant Examiner: Lisa Lichtenstein
Law Firm: Lothrop & West
Application Number: 7/146,149
Classifications
Current U.S. Class: Heating Or Cooling (D23/314)