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Publication numberUSD329687 S
Publication typeGrant
Application numberUS 07/538,177
Publication dateSep 22, 1992
Filing dateJun 14, 1990
Publication number07538177, 538177, US D329687 S, US D329687S, US-S-D329687, USD329687 S, USD329687S
InventorsBryan R. Benson, Allen D. Mathison
Original AssigneeCherne Industries Incorporated
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pipe plug lock unit
US D329687 S
Abstract  available in
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  1. The ornamental design for the pipe plug lock unit, as shown and described.

FIG. 1 is a top perspective view of a pipe plug unit showing our new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image of the right side;

FIG. 3 is a top plan view thereof;

FIG. 4 is another top perspective view thereof showing the unit in an open position;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevation view thereof.

The broken line representation of a pipe plug in FIGS. 1, 2 and 4 and a lock in FIGS. 2 and 4 are for purposes of illustration only and forms no part of the claimed design.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6883546Mar 20, 2003Apr 26, 2005Thomas E. KobylinskiLockable compression plug assembly for hermetically sealing an opening in a part, such as the end of a tubular member
U.S. ClassificationD23/249