Plug for pipe coupling
United States Patent D434834

Goto, Kunihiko (Tokyo, JP)
Application Number:
Publication Date:
Filing Date:
Nitto Kohki Co., Ltd. (Tokyo, JP)
Primary Class:
Field of Search:
D23/259, D23/260, D23/262, D23/263, D23/264, 285/122.1, 285/271, 285/272, 137/615, 251/150
View Patent Images:
US Patent References:
5507534Hydraulic ball style swivel fittingApril, 1996Reifenberger et al.

Foreign References:
JP9170688June, 1997
JP10220658August, 1998
JP1194169April, 1999
Other References:
Imperial Fluid Transmission Components, Catalog No. 114-C, "Male Pipe Thread 45 degree elbow", p. 106, 1982.
Imperial-Eastman, Catalog No. 112, Fitting "474-F", p. 38, Aug. 1966.
Primary Examiner:
Gandy, James
Assistant Examiner:
Hecker, Reid
Attorney, Agent or Firm:
Wenderoth, Lind & Ponack, L.L.P.
1. The ornamental design for plug for pipe coupling, as shown.


FIG. 1 is a perspective view taken from the top, front and left side of a plug for pipe coupling showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

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

FIG. 7 is a bottom plan view thereof.