Gate valve
Description
FIG. 1 is a perspective view taken from the top, front and right side of a gate valve showing my new design;
FIG. 2 is a perspective view taken from the bottom, rear and right side thereof;
FIG. 3 is a left side elevational view thereof; and
FIG. 4 is a top plan view thereof.
Referenced Cited
U.S. Patent Documents
Other references
D179791 | February 1957 | Williams |
D204655 | May 1966 | Lowrey et al. |
D238947 | February 1976 | Chilek et al. |
3063079 | November 1962 | Bergman et al. |
3215157 | November 1965 | Anderson et al. |
3533598 | October 1970 | Tillman, III |
3557822 | January 1971 | Chronister |
3889925 | June 1975 | Brooks |
3929316 | December 1975 | Guthrie |
4043535 | August 23, 1977 | Freeman et al. |
4222406 | September 16, 1980 | Schaefer |
4340204 | July 20, 1982 | Herd |
- Oil Field Composite Catalog 1980/1980, pp. 7335, 7367-7369 (WKM Catalog 80).
Patent History
Patent number: D292935
Type: Grant
Filed: Sep 2, 1983
Date of Patent: Nov 24, 1987
Inventor: Willard E. Kemp (Houston, TX)
Primary Examiner: James R. Largen
Law Firm: Vaden, Eickenroht, Thompson & Boulware
Application Number: 6/528,749
Type: Grant
Filed: Sep 2, 1983
Date of Patent: Nov 24, 1987
Inventor: Willard E. Kemp (Houston, TX)
Primary Examiner: James R. Largen
Law Firm: Vaden, Eickenroht, Thompson & Boulware
Application Number: 6/528,749
Classifications
Current U.S. Class:
Gate Or Butterfly Type (D23/244)