Hydraulically expandable friction coupling

Details Hydraulically expandable friction coupling Hydraulically expandable friction coupling

1980-08-29

1982-07-27

Kundrat, Andrew V.

Joints and connections

Inflatable connector

192 85AT, 464 28, 464 30, F16D 108

Patent

active

043414842

ABSTRACT:
In a hydraulically expandable friction coupling for connecting a shaft to a hub there are two concentrically arranged cylindrical sleeves between which a pressure medium is enclosed. The pressure of said pressure medium against the sleeves is adjustable by adjusting means in order to transmit a predetermined torque between the shaft and the hub. In order to ensure slipping between the outer sleeve and the hub when said predetermined torque is exceeded i.e. when the coupling is overloaded, the outer sleeve is formed with a greater wall thickness than the inner sleeve or at least one additional sleeve is fixed on the outside of the outer sleeve. The wall thickness of said additional sleeve is such that the combined wall thickness of the outer sleeve and the additional sleeve exceeds the wall thickness of the inner sleeve.

REFERENCES:
patent: 2093281 (1937-09-01), Kreuser
patent: 3486776 (1969-12-01), LeBaron
patent: 3861815 (1975-01-01), Landaeus
patent: 4093052 (1978-06-01), Falk

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