Longitudinal displacement unit for driveshafts

Details Longitudinal displacement unit for driveshafts Longitudinal displacement unit for driveshafts

2011-04-12

2011-04-12

Binda, Greg (Department: 3679)

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Coupling facilitates relative axial motion between coupled...

Coupler includes antifriction rolling body engageable with...

C464S169000

Reexamination Certificate

active

07922592

ABSTRACT:
A longitudinal displacement unit includes a first shaft element including an outer face having a plurality of first grooves and a second shaft element having a through-bore that receives the first shaft element. The second shaft element has a plurality of second grooves opposite the first plurality of grooves. A sleeve-shaped cage is disposed between the first shaft element and the second shaft element for guiding rolling contact members that engage the first plurality of grooves and the second plurality of grooves. The cage is provided with through-apertures that are circumferentially distributed, extend parallel to the longitudinal axis, and include longitudinal ends. Pressure springs are disposed within the through-apertures and are loaded between the longitudinal ends thereof. At least one stop is associated with one of the shaft elements, against which the pressure springs abut after having passed through a free displacement path of the cage between the two shaft elements, which free displacement path is not loaded by the pressure springs.

REFERENCES:
patent: 3279218 (1966-10-01), Chocholek et al.
patent: 4075872 (1978-02-01), Geisthoff
patent: 4981459 (1991-01-01), Klinkenberg
patent: 6902487 (2005-06-01), Welschof
patent: 2001/0018369 (2001-08-01), Cermak et al.
patent: 2007/0021223 (2007-01-01), Kossack et al.
patent: 1373752 (1964-10-01), None
patent: 1372402 (1974-10-01), None
patent: 2411930 (2005-09-01), None

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