Flapper valve housing for a concrete pump or the like

McGraw December 18, 1

Patent Grant D253704

U.S. patent number D253,704 [Application Number 05/798,913] was granted by the patent office on 1979-12-18 for flapper valve housing for a concrete pump or the like. This patent grant is currently assigned to Thomsen Equipment Company. Invention is credited to John T. McGraw.


United States Patent D253,704
McGraw December 18, 1979

Flapper valve housing for a concrete pump or the like

Claims

The ornamental design for a flapper valve housing for a concrete pump or the like, substantially as shown.
Inventors: McGraw; John T. (Laguna Beach, CA)
Assignee: Thomsen Equipment Company (Gardena, CA)
Appl. No.: 05/798,913
Filed: May 20, 1977

Current U.S. Class: D15/7
Current International Class: D1502
Field of Search: ;D23/19-22 ;D15/7-9 ;417/516,517,518,519,8,900 ;137/375,8,625.43

References Cited [Referenced By]

U.S. Patent Documents
Re26820 March 1970 Bennett
D202835 November 1966 Bennett
D202836 November 1966 Bennett
D235545 June 1975 Cox
D238424 January 1976 Schoepe et al.
3194271 July 1965 Viessmann
3295554 January 1967 Huppert
3545893 December 1970 Schlecht
3829254 August 1974 Stetter et al.
Foreign Patent Documents
1024299 Feb 1958 DE
1280109 Nov 1960 FR
Primary Examiner: Largen; James R.
Attorney, Agent or Firm: DaRin; Edward J.

Description



FIG. 1 is a top plan view of the flapper valve housing for a concrete pump, or the like, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and

FIG. 7 is a sectional view taken on line 7--7 of FIG. 1.

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