Hydraulic or pneumatic actuator unit for valves

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Description

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

FIG. 2 is a front view;

FIG. 3 is a bottom view;

FIG. 4 is a rear view;

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

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

Referenced Cited
U.S. Patent Documents
D111349 September 1938 Lavallee
4046350 September 6, 1977 Massey et al.
Other references
  • Waterman Hydraulic Components Catalog, p. 18, Two Position Valve, top of page.
Patent History
Patent number: D287268
Type: Grant
Filed: Mar 19, 1984
Date of Patent: Dec 16, 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: 6/590,725
Classifications
Current U.S. Class: D23/19; D23/27