Double sheave lifting block

- Mannesmann Demag AG
Description

FIG. 1 is a top perspective view of a double sheave lifting block showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a top plan view thereof; and

FIG. 8 is a bottom plan view thereof.

The broken lines shown in FIGS. 1 and 2 are for illustrative purposes only and form no part of the claimed design.

Referenced Cited
U.S. Patent Documents
2820624 January 1958 Koegel
3179376 April 1965 Botten
3353794 November 1967 Smith, Jr.
Other references
  • Miller Swivel Products, Inc. brochure, Sep. 1967, p. 32, Miller High Lift Block.
Patent History
Patent number: D300077
Type: Grant
Filed: Sep 16, 1985
Date of Patent: Feb 28, 1989
Assignee: Mannesmann Demag AG (Duisburg)
Inventors: Uwe Lichtenvort (Essen), Manfred Stoeber (Witten)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Kay H. Chin
Attorney: Ralf H. Siegemund
Application Number: 6/776,570
Classifications
Current U.S. Class: Element Or Attachment (D34/35)