Adjustable tensioner

Details Adjustable tensioner Adjustable tensioner

1978-08-28

1980-12-16

Husar, C. J.

Brakes

Internal-resistance motion retarder

Magnetic fluid or material

192 215, 192 53D, 192 84PM, F16F 1503

Patent

active

042390923

ABSTRACT:
This invention relates to a magnetic tensioning device comprising a rotatable outer housing and a magnetic assembly positioned in the interior of the outer housing. A space is provided between the outer housing and the magnetic assembly. A plurality of magnetic particles are positioned in the space between the magnetic assembly and the outer housing. The magnetic particles are held in place by the magnetic flux from the magnetic assembly and the magnetic particles magnetically couple the magnetic assembly and the outer housing. Means for varying the size of the space between the magnetic assembly and the outer housing is provided. The varying of the size of the space varies the magnetic flux from the magnetic assembly and changes the magnetic coupling between the magnetic assembly and the outer housing.

REFERENCES:
patent: 1535238 (1925-04-01), Miller
patent: 2226227 (1940-12-01), Hodges
patent: 2778466 (1957-01-01), Perry, Jr.
patent: 2897934 (1959-08-01), Fitch
patent: 3216542 (1965-11-01), Comstock
patent: 3366903 (1968-01-01), Searle et al.
patent: 3419118 (1968-12-01), Allaben, Jr.
patent: 3749955 (1973-07-01), Fetzer
patent: 4122922 (1978-10-01), Baermann

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