Friction coupling control system

Details Friction coupling control system Friction coupling control system

1980-01-07

1981-08-25

Halvosa, George E. A.

Brakes

Operators

Seat

180273, 188163, 192 9, F16D 6534

Patent

active

042854180

ABSTRACT:
PCT No. PCT/US80/00017 Sec. 371 Date Jan. 7, 1980 Sec. 102(e) Date Jan. 7, 1980 PCT Filed Jan. 7, 1980.
This invention relates to a control system (8) for moving a frictional coupling between an engaged (15) and disengaged (17) position. A power device (40) is provided for moving the frictional coupling (18) to the engaged position (15) in response to a control device (26) being at a first position (27) and the disengaged position (17) in response to the control device (26) being at the second position (29). A switch device (70) deactivates the power device (40) at the engaged (15) and disengaged (17) position of the coupling and a maintaining device (60) releasably maintains the coupling at the engaged (15) and disengaged (17) positions. Thus the brake is held in the engaged and disengaged positions in the absence of electrical power. The control system (8) is particularly useful on a lift truck (18) parking brake system.

REFERENCES:
patent: 2170172 (1939-08-01), Wemp
patent: 2280870 (1942-04-01), Thelander
patent: 2974752 (1961-03-01), Howard
patent: 3017965 (1962-01-01), Hill
patent: 3259203 (1966-07-01), Ryskamp
patent: 3332522 (1967-07-01), Dence
patent: 3487451 (1969-12-01), Fontaine
patent: 3892294 (1975-07-01), Nieminski
patent: 4136752 (1979-01-01), Friesen et al.

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