Traversing hoists – Having horizontally swinging boom or bridge – Having specific bearing structure
Patent
1985-08-21
1987-08-25
Peters, Jr., Joseph F.
Traversing hoists
Having horizontally swinging boom or bridge
Having specific bearing structure
212223, 212269, 384281, 384282, 384300, B66C 2302
Patent
active
046886885
ABSTRACT:
A jib crane system comprising a horizontally extending load beam rigidly attached to the upper end of a vertically extending mast. The lower part of the mast is positioned inside a hollow structure such as a pipe and is rotatably associated therein, and spaced from the inside surface of the pipe. A bearing boot is rigidly secured to the mast and in frictional contact with the inside surface of the pipe. The bearing boot slides around the inside circumference of the pipe in a circular or arcuate path as the mast and load beam revolve around the central axis of the mast. The bearing boot includes an outer arcuate concave contacting plate having substantially the same radius as the inside convex surface of the pipe. A ring of foil may be secured on the inside of the pipe for providing the sliding surface for the bearing boot. The mast may comprise a flanged beam having a pair of side walls with a web portion therebetween. The web may be split at the upper part thereof into two sections which are angularly spaced apart and the split sections attached at their upper ends to the rear end of the beam. Alternatively, a rod means may be secured at the upper end to the rear end of the load beam and extending angularly downward and inward therefrom for attachment to the mast at the lower end thereof.
REFERENCES:
patent: 1534797 (1925-04-01), McLeod
patent: 1721777 (1929-07-01), Gluckstein
patent: 1865762 (1932-07-01), Kaltenbach
patent: 2170545 (1939-08-01), Burton
patent: 2449662 (1948-09-01), Leeson
patent: 2828872 (1958-04-01), Mangel
patent: 2998397 (1961-08-01), Riesing
patent: 3352612 (1967-11-01), Eudier
patent: 3464882 (1969-09-01), Morton
patent: 3774983 (1973-11-01), Lagally
patent: 3782790 (1974-01-01), Benkowski
patent: 4004695 (1977-01-01), Hockensmith et al.
patent: 4426162 (1984-01-01), Tsuchiya et al.
McNelis Robert L.
Volakakis John G.
Wallentim Burt H.
Brahan Thomas
Goldberg Jerome
Handling Systems, Inc.
Peters Jr. Joseph F.
LandOfFree
Jib crane arrangement having a rotatable mast does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Jib crane arrangement having a rotatable mast, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jib crane arrangement having a rotatable mast will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1918423