Expansion coupling for plastic pipe

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

FIG. 1 is a perspective view taken from one side of an expansion coupling for plastic pipe showing my new design;

FIG. 2 is an elevational view taken from the side opposite that shown in FIG. 1;

FIG. 3 is an elevational view taken from one end thereof; and

FIG. 4 is an elevational view taken from the end opposite that shown in FIG. 3.

Referenced Cited
U.S. Patent Documents
D136056 July 1943 Rocic
D193323 July 1962 Hahn et al.
D221942 September 1971 Halling
1726483 August 1929 Giesler
1786506 December 1930 Ray
2565296 August 1951 Chyle
2911238 November 1959 Myers et al.
2931669 April 1960 McDonald
3495856 February 1970 Daymond
3837685 September 1974 Miller
4350372 September 21, 1982 Logsdon
Foreign Patent Documents
342692 October 1921 DEX
2114180 September 1972 DEX
2318379 February 1977 FRX
518754 March 1940 GBX
Patent History
Patent number: D270935
Type: Grant
Filed: Jan 26, 1981
Date of Patent: Oct 11, 1983
Inventor: Duane D. Logsdon (Fullerton, CA)
Primary Examiner: James R. Largen
Attorneys: K. H. Boswell, Edward D. O'Brian
Application Number: 6/228,299
Classifications
Current U.S. Class: D23/43
International Classification: D2301;