| 摘要 |
The nut component of a transmission mechanism is at each end provided with a sealing member designed as a tubular element enclosing the screw of the transmission and having an internal, helical ridge to cooperate therewith. The member is further provided with means for biasing the member away from the nut in such a manner that said ridge will be forced against the sidewall of the groove in the screw remote from the nut, whereby the groove is continuously swept clean as the nut is displaced along the screw. The sealing member is further designed as a reservoir for grease and is equipped to release surplus grease from the nut, when the latter is being filled.
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