Ball screw seal

Details Ball screw seal Ball screw seal

1991-09-10

1993-01-12

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

74459, F16H 2522

Patent

active

051780291

ABSTRACT:
A seal for use in a ball screw assembly sealingly engages portions of both the nut and the screw. The seal has a plurality of teeth at an outer peripheral surface, and further has a seal thread received in a thread on the screw. The seal is rotated relative to the nut and moves axially due to the screw thread until a seal face sealingly engages the nut. A set screw is then inserted through the nut, into a space formed between adjacent teeth on the seal, to prevent further relative rotation of the seal and the nut. A force from the nut on the seal urges the seal axially such that the seal thread is biased into the screw thread, providing sealing contact between the seal thread and the screw thread.

REFERENCES:
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patent: 3669460 (1972-06-01), Wysong
patent: 3975968 (1976-08-01), Chaffin
patent: 4052076 (1977-10-01), Wysong
patent: 4148226 (1979-04-01), Benton
patent: 4226431 (1980-10-01), Jelinek et al.
patent: 4258584 (1981-03-01), Haegele et al.
patent: 4286793 (1981-09-01), Ploss et al.
patent: 4557156 (1985-12-01), Teramachi
patent: 4604911 (1986-08-01), Teramachi
patent: 4881419 (1989-11-01), Weyer
patent: 4905533 (1990-03-01), Benton et al.
patent: 4955244 (1990-09-01), Katahira

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