Hydraulic or pneumatic actuator unit for valves

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Description

FIG. 1 is a top plan view of our design for a hydraulic or pneumatic actuator unit for valves;

FIG. 2 is a front elevation view;

FIG. 3 is a bottom plan view;

FIG. 4 is a rear elevation view;

FIG. 5 is a side elevation view, seen from the right;

FIG. 6 is a side elevation view, seen from the left.

Referenced Cited
U.S. Patent Documents
D142771 November 1945 Chapman, Jr.
4046350 September 6, 1977 Massey et al.
Other references
  • Waterman Hydraulic Components Catalog, p. 19, Three Position Valve, top of page.
Patent History
Patent number: D286907
Type: Grant
Filed: Mar 19, 1984
Date of Patent: Nov 25, 1986
Assignee: Georg Fischer Aktiengesellschaft (Schaffhausen)
Inventors: Bruno Hilpert (Diessenhofen), Bruno Hunziker (Schaffhausen)
Primary Examiner: James M. Gandy
Law Firm: Toren, McGeady, Stanger, Goldberg & Kiel
Application Number: 6/590,726
Classifications
Current U.S. Class: D23/19; D23/27