Title:
SPREADER BAR APPARATUS
Document Type and Number:
WIPO Patent Application WO1999067166
Kind Code:
A9
Abstract:
A spreader bar apparatus (10) of improved configuration comprises a plurality of bar sections including at least a pair of bar sections (16, 17) that are connectable end-to-end to form a lifting bar with a central longitudinal axis and with left and right bar end members (18, 19), each removably attachable to the lifting bar that is comprised of the two bar sections. A plurality of transverse annular faces (30-33) are provided respectively on the bar sections (16, 17) and on the bar end members (18, 19) for transferring axial load along the bar central axis and in between the various bar sections and end members during a lift. A plurality of connecting portions (34-37) provided on the bar sections and bar end members form detachable connections between the bar sections and between each bar end member and a bar section. The apparatus of the present invention is so configured that a majority of load is carried by the annular faces (30-33) as opposed to the connecting portions (34-37). For example, threaded connections can be used to assemble the bar sections and end members together. However, the thread sections are loosely connected until the annular faces abut one another so that a full engagement of the threads is not realized and the annular faces carry substantially all or most of the load.
Inventors:
KHACHATURIAN JON E (US)
Application Number:
PCT/US1999/014406
Publication Date:
June 15, 2000
Filing Date:
June 25, 1999
Export Citation:
Assignee:
KHACHATURIAN JON E (US)
International Classes:
B66C1/12; (IPC1-7): B66C1/12
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