Low-profile lifting apparatus

Details Low-profile lifting apparatus Low-profile lifting apparatus

B - Operations, Transporting

66

D

254/83

B66D 3/16 (2006.01) B66C 9/14 (2006.01) B66C 11/06 (2006.01)

Patent

CA 2017452

-10- LOW-PROFILE LIFTING APPARATUS Abstract of the Disclosure A low-profile lifting apparatus 10 for hoisting and moving objects along an [-beam (12), comprising a frame assemble (20) a drive system (44), a pulley assembly (56), and a hoist assembly (66). The drive system (44) includes a firstdrive roller (48), and 8 second drive roller (49) operatively connected to each other and positioned on opposite sides of the web (14) to drive the lifting apparatus (10) along the lower flange (16). The drive mechanism (50) includes a pulley chain (62) that is manually pulled by an operator to rotate the drive shaft (60) and the attached drive rollers (48) and (49). A block (14) has a hook (76) positioned laterally on one side of the lateral centerpoint (82) nearest the chain hoist (68). The load chain (86) passes downward from the frame assembly (20) to the pulley wheel (78), then back to the frame assembly (20), and laterally beneath the lower flange (16) to the frame assembly (20), then down to the pulley wheel (80) on the block (74), then back to the frame assembly (20) where it engages the chain hoist (68).

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