Load hoist arrangement

Details Load hoist arrangement Load hoist arrangement

2004-03-04

2008-11-25

Brahan, Thomas J. (Department: 3654)

Traversing hoists

Traveling bridge

Trolley mounted motor for trolley traversal via cable means

C212S328000

Reexamination Certificate

active

07455188

ABSTRACT:
This invention relates to a load hoist arrangement (1) comprising a control device (50) arranged between a traverse device and a load carrying device (52). The load carrying device (52) is manually guidable in a three-dimentional space and lateral movement of said load carrying device (52) is controlled by a driving device. The driving device is controlled by recorded and transmitted force impacts from said control device (50) to said driving device. The traverse device has support elements (5, 6, 7) for supporting a traveling bridge (4), arranged to travel along said support elements (5, 6, 7), and a carriage (3) arranged to travel back and forth on said traveling bridge (4). The driving device comprises at least one motor, provided with at least two driving wheel units (15, 16), secured to said carriage (3) and two drag elements (21, 21′) secured at its end portions to opposite end portions of said support elements (5, 6) and crossing at said traveling bridge (4). The drag elements (21, 21′) crossing each other at said carriage (3) arranged such that a first driving wheel unit (15) works in contact with one drag element (21) and a second driving wheel unit (16) works in contact with another drag element (21′), thereby moving the carriage (3) and hence the load carrying device (52) in the lateral direction during operation.

REFERENCES:
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patent: 5804932 (1998-09-01), Yanagisawa
patent: 7043337 (2006-05-01), Colgate et al.
patent: 2 666 318 (1992-03-01), None
patent: 453 589 (1988-02-01), None
patent: 466 960 (1992-05-01), None

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