Linear bearing for continuous longitudinal movement

Details Linear bearing for continuous longitudinal movement Linear bearing for continuous longitudinal movement

1986-09-30

1987-10-27

Levy, Stuart S.

Bearings

Linear bearing

Recirculating

384 44, F16C 2906

Patent

active

047026235

ABSTRACT:
A linear bearing for continuous longitudinal movement in which friction due to changes in the direction of rotation of the rollers is eliminated or substantially reduced. The linear bearing comprises a housing which defines at least one closed roller orbit having an inner surface and an outer surface for accommodating a plurality of rollers. Each roller orbit also comprises a load zone and a return travel zone, which are interconnected at both ends by reversal regions. The load zone is partly defined by a raceway located in the housing adjacent to the load zone for applying a load to the rollers, the raceway forming part of the outer surface of each roller orbit. Respective section planes of the rollers in the load zone and the rollers in the return travel zone intersect along an axis which extends parallel to the load zone, and advantageously define an angle of about 15.degree. to 60.degree., or more preferably about 40.degree. to 50.degree.. Each of the reversal regions includes a transitional region that is approximately helically curved, and a two-dimensionally curved region in which the axes of rotation of the rollers are substantially parallel to the axes of rotation of the rollers in the return travel zone.

REFERENCES:
patent: 2230442 (1941-02-01), Arms
patent: 4302059 (1981-11-01), Teramachi
patent: 4420194 (1983-12-01), Asami
patent: 4438985 (1984-03-01), Borel
patent: 4496198 (1985-01-01), Geka
patent: 4527840 (1985-07-01), Mugglestone et al.
patent: 4563045 (1986-01-01), Katayama

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