Traversing hoists – Having means facilitating assembly or disassembly – Of traversing hoist from support
Reexamination Certificate
2006-01-10
2006-01-10
Brahan, Thomas J. (Department: 3652)
Traversing hoists
Having means facilitating assembly or disassembly
Of traversing hoist from support
C212S253000
Reexamination Certificate
active
06983856
ABSTRACT:
The present invention discloses a portable crane having an elongated boom which attaches at one end to a lower end of a base frame member wherein the upper end of the boom has a stabilizer member attached thereto which stabilizer attached to the upper end of the base frame member. The base frame member is pivotally attached using removable clamps to an upstanding member, for example, a door frame. The boom has a roller pulley attached to its upper end over which a line passes and a means for a motor having a winch mounted thereon attached to the lower end of the boom so that the user can attached one end of the rope to an object to be lifted and run the other end of the rope over the windlass so as to provide a hoist means to lift the object. The crane of the present invention is portable in that it can be moved from one frame member to another frame member so that it can be used at multiple locations internal a building. The crane of the present invention can also be rotated about the vertical axis in approximately an 80 to 90 degree fashion and possibly even up to 180 degrees by having a set of rotatable hinges which attach the base frame member to a pair of removable clamps, which clamps are attached to, e.g., a door frame.
REFERENCES:
patent: 1540630 (1925-06-01), Jenks et al.
patent: 2568959 (1951-09-01), Illies
patent: 3077613 (1963-02-01), Mayer
patent: 3578179 (1971-05-01), Fujioka
patent: 3638806 (1972-02-01), Hippach
patent: 3845869 (1974-11-01), Sowers et al.
patent: 4560074 (1985-12-01), Manning
patent: 4782962 (1988-11-01), Hackworth et al.
patent: 5156517 (1992-10-01), Boissonneault
patent: 5207337 (1993-05-01), Massey
patent: 5348439 (1994-09-01), Kuhn, Jr.
patent: 6135300 (2000-10-01), Fox
patent: 6425727 (2002-07-01), Hood
patent: 6467117 (2002-10-01), Lantz et al.
Brahan Thomas J.
Williamson George L.
LandOfFree
Portable crane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable crane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable crane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3567666