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Counter-balanced, multiple cable construction craneThe invention is a counter-balanced, multiple cable construction crane. The apparatus for hoisting payloads comprises a crane having a lifting means, the lifting means comprising an end effector means and three suspension means or cables. One end of each cable attaches to a different winding means located on the lifting means, and the other end of each cable attaches to a different point on the end effector, such that the three cables have a theoretical point of convergence with this point corresponding to the center of mass of the payload. Three controls command rotation of the winding means to a predetermined position. Accordingly, the crane provides precise and autonomous positioning of the payload without human guidance. The crane further comprises a counter-balancing means. Two controls position the counter-balancing means to offset the overturning moment which arises during the lifting of heavy payloads.
Document ID
19940015896
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Mikulas, Martin M., Jr.
(NASA Langley Research Center Hampton, VA, United States)
Yang, Li-Farn
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
October 19, 1993
Subject Category
Mechanical Engineering
Report/Patent Number
Patent Number: NASA-CASE-LAR-14565-1-CU
Patent Application Number: US-PATENT-APPL-SN-793974
Patent Number: US-PATENT-5,253,771
Accession Number
94N20369
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-14565-1-CU|US-PATENT-5,253,771
Patent Application
US-PATENT-APPL-SN-793974
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