Resilient spider for well installation

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Description

FIG. 1 is a perspective view of a resilient spider for well installation showing my new design with the broken line showing a fragmented riser pipe section being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a top plan view, the bottom being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view, the left side being a mirror image thereof; and,

FIG. 5 is a back elevational view thereof.

Referenced Cited
U.S. Patent Documents
D219768 January 1971 Conwill
D272392 January 31, 1984 Bigelow
2781100 February 1957 Pyle et al.
3039534 June 1962 Koop
3231021 January 1966 Greene, Jr.
4066125 January 3, 1978 Bassani
4133398 January 9, 1979 Still
4287948 September 8, 1981 Haggard
4306620 December 22, 1981 Fronius
5247990 September 28, 1993 Sudol et al.
Foreign Patent Documents
1694867 November 1991 SUX
9216717 October 1992 WOX
Patent History
Patent number: D375888
Type: Grant
Filed: May 22, 1995
Date of Patent: Nov 26, 1996
Inventor: Joel S. Loitherstein (Ashland, MA)
Primary Examiner: Holly H. Baynham
Law Firm: Hamilton, Brook, Smith & Reynolds, P.C.
Application Number: 0/39,459
Classifications
Current U.S. Class: D/8354