Insulation injection hole plug

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

FIG. 1 is a bottom perspective view of the insulation injection hole plug showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view taken from the right side as seen in FIG. 2;

FIG. 4 is a side elevational view taken from the right side as viewed in FIG. 3;

FIG. 5 is a top plan view.

The left side, as viewed in FIG. 2, is identical to the right side as shown in FIG. 3, and the left side, as shown in FIG. 3, is identical to the right side, as shown in FIG. 4.

Referenced Cited
U.S. Patent Documents
D34031 February 1901 Milligan
4137680 February 6, 1979 Doonan
Other references
  • Fastex Std. Products Catalog, .COPYRGT.1972, p. 3, plug in grouping 27 (far right).
Patent History
Patent number: D259466
Type: Grant
Filed: Jul 28, 1978
Date of Patent: Jun 9, 1981
Inventor: R. Dean Doonan (Montezuma, IA)
Primary Examiner: B. J. Bullock
Application Number: 5/929,211
Classifications
Current U.S. Class: D/8499
International Classification: D0899;