Pulley block

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Description

FIG. 1 is a side perspective view of a pulley block showing the new design;

FIG. 2 is another side perspective view of the pulley block of FIG. 1 seen from the opposite of FIG. 1;

FIG. 3 is a side elevational view of the pulley block showing the new design; and,

FIG. 4 is another side elevational view of the pulley block of FIG. 3 seen from the opposite of FIG. 3.

Referenced Cited
U.S. Patent Documents
D138597 August 1944 Little
D153013 March 1949 Parker
D277992 March 12, 1985 Tupper
D295104 April 5, 1988 Pancook
D304119 October 17, 1989 Lyall et al.
D313299 December 25, 1990 Tupper
D318941 August 6, 1991 Avery
D341242 November 9, 1993 Thorby
Patent History
Patent number: D393515
Type: Grant
Filed: May 6, 1996
Date of Patent: Apr 14, 1998
Assignee: Robertsfors Forsaljnings AB (Anaset)
Inventor: Tomas Pettersson (Anaset)
Primary Examiner: M. N. Pandozzi
Law Firm: Kirkpatrick & Lockhart LLP
Application Number: 0/54,097
Classifications
Current U.S. Class: Crane Or Hoist (5) (D34/33)
International Classification: 1205;