Pipe coupling

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Description

FIG. 1 is a perspective view of a pipe coupling showing our new design;

FIG. 2 is a side elevational view thereof, the other sides being the same as the side shown; and

FIG. 3 is an end elevational view thereof; the opposite end being the same as the end shown.

Referenced Cited
U.S. Patent Documents
D135633 May 1943 Stark et al.
D135634 May 1943 Stark et al.
D137384 February 1944 Corley
865497 September 1907 Kenyon
2121558 June 1938 Coe et al.
3064983 November 1962 Halterman
3582113 June 1971 Cauthery
3592491 July 1971 Glover
3791679 February 1974 Glover
4130302 December 19, 1978 Mitchell et al.
4223896 September 23, 1980 Strom
4343480 August 10, 1982 Vassallo
4368894 January 18, 1983 Parmann
4371179 February 1, 1983 Bohman
4637618 January 20, 1987 Valls
Patent History
Patent number: D291482
Type: Grant
Filed: Mar 13, 1985
Date of Patent: Aug 18, 1987
Assignee: Vassallo Research and Development Corporation (Ponce, PR)
Inventors: Efrain D. Vassallo (Ponce, PR), Jose E. Valls (Ponce, PR)
Primary Examiner: James R. Largen
Law Firm: Steele, Gould & Fried
Application Number: 6/711,107
Classifications
Current U.S. Class: D23/45