Flow control valve chamber for a concrete pump or the like

- Thomsen Equipment Company
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Description

FIG. 1 is a top plan view of a flow control valve chamber for a concrete pump showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
RE26820 March 1970 Bennett
D202835 November 1966 Bennett
D202836 November 1966 Bennett
3194271 July 1965 Viessmann
3295554 January 1967 Huppert
3545893 December 1970 Schlecht
3829254 August 1974 Stetter et al.
Foreign Patent Documents
1024299 February 1958 DE
1280109 November 1960 FR
Patent History
Patent number: D252516
Type: Grant
Filed: Jun 15, 1977
Date of Patent: Jul 31, 1979
Assignee: Thomsen Equipment Company (Gardena, CA)
Inventor: John T. McGraw (Laguna Beach, CA)
Primary Examiner: James R. Largen
Attorney: Edward J. Darin
Application Number: 5/806,757
Classifications
Current U.S. Class: Pump Or Compressor (D15/7); D23/19
International Classification: D1502;