Magnetic tensioning device

Details Magnetic tensioning device Magnetic tensioning device

1983-07-19

1985-07-02

Gilreath, Stanley N.

Winding, tensioning, or guiding

Strand tensioning device

Wheel or pulley

310 93, B65H 5916

Patent

active

045263299

ABSTRACT:
A magnetic tensioning device comprises a main tension pulley to which a braking torque is applied, an absorbing lever for absorbing fluctuation in tension and a second tension pulley mounted at one end of the absorbing lever. Adequate tensioning is obtained by means of the main and second tension pulleys. The braking torque is generated by a permanent magnet and a magnetizable disc opposed to each other. When tension is received at the absorbing lever, it displaces and the distance between the magnet and the magnetizable disc is changed according to the displacement of the lever to generate a correcting braking torque.

REFERENCES:
patent: 2591463 (1952-04-01), Parker
patent: 2607820 (1952-08-01), Judd et al.
patent: 2688789 (1954-09-01), Duryee
patent: 2724065 (1955-11-01), Saxl
patent: 3022025 (1962-02-01), Saxl
patent: 3072361 (1963-01-01), Fuller
patent: 3113746 (1963-12-01), Steen
patent: 3797775 (1974-03-01), White

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