Oil burner preheater unit

Description

FIG. 1 is a perspective view of the oil burner preheater unit embodying the design of the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D190846 July 1961 Ellefson
3604891 September 1971 Cohen
4541900 September 17, 1985 Mase
4563572 January 7, 1986 Hager
Other references
  • Fuel and Oil Heat, Feb. 1961, p. 37, Fuel Oil Preheater. The Picture Book of Symbols, .COPYRGT.1956, p. 20, Fixed Star, bottom right side of page.
Patent History
Patent number: D342131
Type: Grant
Filed: Jul 19, 1991
Date of Patent: Dec 7, 1993
Inventor: Lloyd J. Westenberg (Queens, NY)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Attorney: Terry M. Gernstein
Application Number: 7/732,695
Classifications
Current U.S. Class: Oil Type (D23/416)