Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling facilitates relative axial motion between coupled... – Coupler includes antifriction rolling body engageable with...
Reexamination Certificate
1998-09-04
2001-03-13
Browne, Lynne H. (Department: 3629)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Coupling facilitates relative axial motion between coupled...
Coupler includes antifriction rolling body engageable with...
C384S049000
Reexamination Certificate
active
06200225
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a shaft assembly which includes coaxial shafts disposed in a telescopic relationship.
A shaft assembly having shafts which are disposed in a telescopic relationship is disclosed in U.S. Pat. No. 5,460,574. This known shaft assembly includes a bushing for transmitting torque between the shafts. The bushing is disposed in sliding engagement with side surfaces of grooves disposed in an outer shaft. The bushing is also disposed in sliding engagement with projections on the inner shaft.
SUMMARY OF THE INVENTION
The present invention relates to a shaft assembly having an outer shaft with a plurality of grooves and an inner shaft which is at least partially disposed within the outer shaft. The inner shaft has a plurality of projections which are at least partially disposed in the grooves in the outer shaft. A plurality of bearing assemblies support the inner and outer shafts for axial movement relative to each other.
The bearing assemblies which support the shafts for axial movement relative to each other include rotatable bearing members. The bearing members have circular outer side surfaces which are disposed in rolling engagement with longitudinally extending side surfaces of the grooves in the outer shaft and with longitudinally extending side surfaces of the projections on the inner shaft. The bearing members are effective to transmit force between the longitudinally extending side surfaces of the grooves in the outer shaft and the longitudinally extending side surfaces of the projections on the inner shaft.
Each of the bearing assemblies includes a retainer strip having a plurality of spaced apart slots. Each of the bearing members is disposed in a slot in a retainer strip in one of the bearing assemblies.
REFERENCES:
patent: 2532754 (1950-12-01), Beck, Sr.
patent: 2787144 (1957-04-01), Chauvel
patent: 4138167 (1979-02-01), Ernst et al.
patent: 4254639 (1981-03-01), Teramachi
patent: 4524671 (1985-06-01), Bender et al.
patent: 4705491 (1987-11-01), Andersson
patent: 4741723 (1988-05-01), Orain
patent: 4805478 (1989-02-01), Beauch
patent: 5213546 (1993-05-01), Schneider
patent: 5460574 (1995-10-01), Hobaugh
patent: 1266350 (1961-05-01), None
Binda Greg
Browne Lynne H.
Tarolli, Sundheim, Covell Tummino & Szabo L.L.P.
TRW Inc.
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