Traversing hoists – Having means facilitating assembly or disassembly
Reexamination Certificate
2008-05-27
2008-05-27
Brahan, Thomas J. (Department: 3654)
Traversing hoists
Having means facilitating assembly or disassembly
C212S179000, C212S324000, C212S343000, C104S126000
Reexamination Certificate
active
07377398
ABSTRACT:
A portable knockdown trolley hoist, comprising: a trolley support member having opposing ends; a trolley having a plurality of upper roller bearings and a plurality of lower roller bearings, the trolley rollably sandwiching an upper portion and a lower portion of the trolley support member between the plurality of upper roller bearings and the plurality of lower roller bearings, the trolley having a telescoping extension boom fastened thereto and extending therefrom, which has a plurality of extension boom sections and a sheave mounted thereto, the trolley having a hoist having a winch and a hoist cable extending from the winch and about the sheave and having a lifting end; opposing end supports, each having an opposing support member and opposing substantially upright legs removably fastened to the opposing support member; opposing end mounts, each releasably sandwiching an opposing end of the trolley support member and an opposing support member therebetween.
REFERENCES:
patent: 250312 (1881-11-01), Walker
patent: 517078 (1894-03-01), True
patent: 612413 (1898-10-01), Guernsey
patent: 3159110 (1964-12-01), Wylie
patent: 3540603 (1970-11-01), Neumeier
patent: 3713544 (1973-01-01), Wallace et al.
patent: 4130168 (1978-12-01), Deike
patent: 4645084 (1987-02-01), Deike
patent: 5368124 (1994-11-01), Fukutomi
patent: 5615785 (1997-04-01), Kaner
patent: 92/13736 (1992-08-01), None
Brahan Thomas J.
Lunenfeld Harvey
LandOfFree
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