Adjustable torsion damper

Details Adjustable torsion damper Adjustable torsion damper

1998-11-24

2000-08-15

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

482 63, 482908, 267154, 267273, 26714015, F16F 1503, F16F 953

Patent

active

061021695

ABSTRACT:
An adjustable torsion damper has a mount which is divided in the longitudinal direction thereof into two submounts made of a material conductive to magnetism. Located between the two submounts is a portion nonconductive to magnetism. The mount is provided at an upper end thereof and a lower end thereof with a first round hole and a second round hole. The first round hole runs between the submounts. A magnetic block is rotatably disposed in the first round hole. A rotary shaft is rotatably disposed in the second round hole. The rotary shaft is made of a material conductive to magnetism. The value of torsional moment of the rotary shaft changes along with the magnetic block in motion.

REFERENCES:
patent: 4257497 (1981-03-01), Schroeder
patent: 5014981 (1991-05-01), Prelich
patent: 5031900 (1991-07-01), Leask
patent: 5072930 (1991-12-01), Sun
patent: 5096024 (1992-03-01), Wu
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patent: 5437353 (1995-08-01), Wu
patent: 5685806 (1997-11-01), Yu
patent: 5711404 (1998-01-01), Lee
patent: 5879273 (1999-03-01), Wei et al.
patent: 6029551 (2000-02-01), Wu
patent: 6042517 (2000-03-01), Gunther et al.

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