Overload-protected torque transmitting telescopic shaft

Details Overload-protected torque transmitting telescopic shaft Overload-protected torque transmitting telescopic shaft

1988-01-20

1990-02-06

Stodola, Daniel P.

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

Coupling facilitates relative axial motion between coupled...

Coupler includes antifriction rolling body engageable with...

74492, F16C 303

Patent

active

048985660

ABSTRACT:
Torque transmitting telescopic apparatus comprising a shaft (1) and a sleeve (2) axially displacable relative to each other and interconnected for rotation in common to transmit torque, in which the sleeve has a polygonal bore cross-section and the shaft has a corresponding polygonal cross-section. The bore and shaft cross-sections are respectively defined by pairs of cooperating surfaces. One surface in each of the pairs has at least three sections including a central section defining a groove (4), narrower than the other cooperating surface of the pair, and outer sections (5,6). A rolling element assembly disposed within each groove (4) is restrained against axial movement relative to at least one of the members comprising the shaft and the sleeve and includes a bed, a plurality of rolling elements and a plate spring. The rolling element assemblies couple the shaft and sleeve for play-free axial translation and torque transmission. At least one of the outer sections (5,6) engages an associated cooperating surface (9) when applied torque exceeds a predetermined magnitude.

REFERENCES:
patent: 3318170 (1967-05-01), Runkle
patent: 3434369 (1969-03-01), Runkle
patent: 3473406 (1969-10-01), Runkle
patent: 3808838 (1974-05-01), Bowen et al.
patent: 4075872 (1978-02-01), Geisthoff
patent: 4269043 (1981-05-01), Kizu et al.

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