Slip joint seal for a driveshaft

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling accommodates drive between members having... – Coupling transmits torque via radially directed pin

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Details

464162, F16D 306

Patent

active

052999823

ABSTRACT:
A slip joint seal for a driveshaft is between two universal joint yokes. A male splined shaft rotates with a first yoke and a female splined shaft rotates with a second yoke, with the two being mechanically engaged for slidable but nonrotational movement during operation of the driveshaft. A sealing sleeve extends from the first yoke around the male splined shaft and is of a larger diameter than the female splined shaft. The female splined shaft has a single, outwardly-facing, annular seal at its outer end, away from the second yoke, which seal engages the inner surface of the sealing sleeve. The female splined shaft also has a grease fitting for supplying grease to the shafts, with excess grease being capable of passing by the seal, which also acts as a wiper to remove contaminants within the sealing sleeve.

REFERENCES:
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patent: 4592556 (1986-06-01), Nieman et al.
patent: 4819755 (1989-04-01), Smemo et al.

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