Pressure vessel locking ring

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Description

FIG. 1 is a front view of a pressure vessel locking ring showing the new design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevational view thereof with the dotted line indicating that the end of the ring forms no part of the design; and,

FIG. 7 is a perspective view of the locking ring of FIG. 1 shown in expanded condition to emphasize its helical shape.

Claims

We claim the ornamental design for a pressure vessel locking ring, as shown and described.

Referenced Cited
U.S. Patent Documents
3937780 February 10, 1976 Mercier
4781830 November 1, 1988 Olsen
5036996 August 6, 1991 Epstein
5720411 February 24, 1998 Darby et al.
Patent History
Patent number: D468392
Type: Grant
Filed: Nov 22, 2000
Date of Patent: Jan 7, 2003
Assignee: Progressive Composite Technologies, Inc. (Vista, CA)
Inventors: Douglas W. Eisberg (Escondido, CA), Andrew Panlasigui (San Diego, CA)
Primary Examiner: Robin V. Taylor
Attorney, Agent or Law Firm: Fitch, Even, Tabin, & Flannery
Application Number: 29/133,122
Classifications
Current U.S. Class: Element Or Attachment (1) (D23/206); Filter Or Strainer (2) (D23/209)
International Classification: 2301;