Combined vacuum lifter head and operating valve therefore

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Description

FIG. 1 is a perspective view of my combined vacuum lifter head and operating valve therefore shown obliquely from one side, slightly from the front side and slightly from below;

FIG. 2 is a perspective view of my combined vacuum lifter head and operating valve therefore, shown obliquely from the rear side and slightly from below; and,

FIG. 3 is a perspective view showing obliquely my combined vacuum lifter head and operating valve therefore from above from the front side, and from the opposite side as compared to the view shown in FIG. 1.

Referenced Cited
U.S. Patent Documents
1574274 February 1926 Allender
4397491 August 9, 1983 Anderson
4561687 December 31, 1985 Bostrom
4749219 June 7, 1988 Bolle et al.
5172922 December 22, 1992 Kowaleski et al.
Patent History
Patent number: D351708
Type: Grant
Filed: Oct 1, 1992
Date of Patent: Oct 18, 1994
Assignee: Pritec AB (Fjaras)
Inventor: Roland Andersson (Fjaras)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Robin V. Taylor
Law Firm: Marshall, O'Toole, Gerstein, Murray & Borun
Application Number: 0/49
Classifications
Current U.S. Class: Conveying, Lifting, Or Transferring Article (D34/28)