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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
James; Arthur M.
Address:
Beaverton, OR
No. of patents:
3
Patents:












Patent Number Title Of Patent Date Issued
4070836 Bearing member January 31, 1978
A bearing member intermediate structural members provide for low friction relative movement of the structural members comprising, in operative position, a flattened tube having an elastic wall and an anti-friction medium deposited within the tube.
4046414 Apparatus for hoisting a structural member September 6, 1977
Apparatus for hoisting a structural member including a load-distributing device with multiple strands depending therefrom secured to the structural member through hangers engaging A-frames in the structural member. The A-frames form truss structure imparting rigidity to the structural me
3998029 Tower crane climbing December 21, 1976
A tower crane and method of climbing the crane. The tower of the crane is initially stabilized at an elevated location, and the tower is released from a base frame supporting its base and elevated to place its base on an upper frame, the base frame is then elevated, and the tower is then










 
 
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