Supporting mechanism of a linearly movable bearing

Details Supporting mechanism of a linearly movable bearing Supporting mechanism of a linearly movable bearing

1986-05-06

1988-01-05

Levy, Stuart S.

Bearings

Linear bearing

Ball bearing

384 30, F16C 2904

Patent

active

047172657

ABSTRACT:
A support mechanism for a cylindrical coordinate type industrial robot comprising a stationary upstanding tubular outer member and a displaceable inner member supported within the outer member to undergo axial displacement in upward and downward directions and angular displacement in clockwise and counterclockwise directions. The supporting mechanism includes a bearing interposed between the inner and outer members, the bearing including a retaining member rollably retaining thereon a plurality of rollable elements. An elastic balancing and restoring device for applying elastic biasing forces in opposite axial directions to the upper and lower ends of the retainer member is operative in the event the retainer member fails to maintain proportionate displacement with the inner member to temporarily increase the magnitude of the force difference between the oppositely directed elastic biasing forces in a direction effective to restore the proportionate displacement.

REFERENCES:
patent: 2198039 (1940-04-01), Onions et al.
patent: 2422775 (1947-06-01), Conner
patent: 2833598 (1958-05-01), Sloyan
patent: 2981571 (1961-04-01), Martens
patent: 3003827 (1961-10-01), Hentschke
patent: 3043634 (1962-07-01), Coley
patent: 3253868 (1966-05-01), Danly
patent: 3357755 (1967-12-01), Danly
patent: 4408806 (1983-10-01), Orain

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