Sealing plug for a monitoring well

Description

FIG. 1 is a perspective view of a sealing plug for a monitoring well showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof; and,

FIG. 6 is a front elevational view thereof, the rear view being a mirror image.

Referenced Cited
U.S. Patent Documents
3949787 April 13, 1976 Milo
4014367 March 29, 1977 Milo
4060100 November 29, 1977 Miller et al.
4848458 July 18, 1989 Holdsworth et al.
4881597 November 21, 1989 Hansley
4921123 May 1, 1990 Mizioch
Patent History
Patent number: D326500
Type: Grant
Filed: Aug 28, 1989
Date of Patent: May 26, 1992
Assignee: Universal Valve Company, Inc. (Elizabeth, NJ)
Inventor: Martin C. Pettesch (Roselle, NJ)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Eckert Seamans Cherin & Mellott
Application Number: 7/399,753
Classifications