Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Locked
Patent
1992-11-12
1994-04-19
Larson, Lowell A.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Locked
16 35R, B60B 3300
Patent
active
053034503
ABSTRACT:
A caster wherein the wheel frame and the wheel can be locked in a first axial position of a post which is installed in an upright support serving to turnably mount the frame. When the post is moved to a second axial position relative to the support, the wheel is free to turn in the frame but the frame is releasably held against turning relative to the support. However, if it should become necessary to change the orientation of the frame relative to the support, the frame is turned with a selected force to overcome the bias of a spring which tends to maintain the frame in the selected angular position. Several different angular positions of the frame can be determined by a set of balls which are mounted in a base of the post and by the sockets of a ring-shaped female coupling member which is installed in the frame and whose sockets can receive the balls. The balls are expelled from the aligned sockets to permit turning of the frame relative to the support when the bias of the spring is overcome. Such bias is adjustable. A braking device is provided to lock the frame against turning and to hold the wheel against rotation in the first axial position of the post.
REFERENCES:
patent: 2960717 (1960-11-01), Moore
patent: 3911525 (1975-10-01), Haussels
patent: 4385414 (1983-05-01), Damico
patent: 4722114 (1988-02-01), Neumann
patent: 4835815 (1989-06-01), Mellwig
patent: 4998320 (1991-03-01), Lange
patent: 5115539 (1992-05-01), Lee
UK Patent Application No. 2055041A, pub. Feb. 25, 1981, Inventor: Stewart J. Brown.
Albert Schulte Sohne GmbH & Co.
Gurley Donald M.
Larson Lowell A.
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