Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Leg elevators
Patent
1974-09-24
1976-01-27
Krizmanich, George H.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Leg elevators
B60B 3306
Patent
active
039343049
ABSTRACT:
Swivel castors being characterized by providing a supporting shaft at the lower part of the both-side supporting member of a metal fitting which is pivotally fixed to the bottom of a fixed vertical shaft, mounting said supporting shaft on one side-wall of a L-shaped supporting plate, inserting said supporting shaft into a slit which has an appropriate temporary stopping means on its both ends, pivotally supporting the L-shaped supporting plate by said supporting shaft, providing a supporting stand at the end of one side-wall of said L-shaped supporting plate, mounting a supporting shaft on the other side-wall of the L-shaped supporting plate so as to support a rotary wheel, and when the L-shaped supporting plate turns in such direction as the end of one side-wall of the plate is raised and the supporting stand fixed thereto is stopped by an internal stopping edge of the metal fitting and thus the rotary wheel alone comes into contact with the ground, letting the metal fitting and the rotary wheel turn freely and thus making it possible to move a table or the like freely, and on the contrary, when the L-shaped supporting plate turns in such direction as said end of the side-wall of the plate is brought down and both the supporting stand attached thereto and the rotary wheel touch the ground at one time, stopping the movement of the metal fitting and the rotary wheel perfectly and thus making it possible to stop the movement of a table or the like perfectly.
REFERENCES:
patent: 746636 (1903-12-01), Lawrence
patent: 1730788 (1929-10-01), Simon
patent: 2597213 (1952-05-01), Whiteman
patent: 2779049 (1957-01-01), Hoddevik
patent: 3432878 (1969-03-01), Hupfer
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