Pipe coupling

- General Plastics, Inc.
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Description

FIG. 1 is a side elevation view of a pipe coupling incorporating our new design. The opposite side of the coupling is a mirror image of that shown in FIG. 1;

FIG. 2 is a top plan view of the pipe coupling illustrated in FIG. 1;

FIG. 3 is a bottom plan view of the pipe coupling illustrated in FIGS. 1 and 2;

FIG. 4 is an end elevation view of the pipe coupling; and,

FIG. 5 is a perspective view of the pipe coupling.

Referenced Cited
U.S. Patent Documents
149958 April 1874 Smith
567231 September 1896 Glauber
925762 June 1909 Eager
2086007 July 1937 Tompkins
2215318 September 1940 Bristol
3222777 December 1965 Rutter et al.
3825288 July 1974 Maroschak
Other references
  • Brochure of Northern Pipe Products, GPK Products, Inc., undated but admitted to be prior art, not dated.
Patent History
Patent number: D348097
Type: Grant
Filed: Mar 16, 1992
Date of Patent: Jun 21, 1994
Assignee: General Plastics, Inc. (Shawnee, OK)
Inventors: John P. Inda (Shawnee, OK), Joseph J. Inda (Tecumseh, OK)
Primary Examiner: Stella Reid
Assistant Examiner: Eric Watterson
Law Firm: Dougherty, Hessin, Beavers & Gilbert
Application Number: 7/852,414
Classifications
Current U.S. Class: Elbow Or With Flow Direction Change (D23/263)