Double sheave lifting block
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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
Other references
2820624 | January 1958 | Koegel |
3179376 | April 1965 | Botten |
3353794 | November 1967 | Smith, Jr. |
- 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
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)