1984-01-09
1986-01-14
Halvosa, George E. A.
Brakes
Rod
74531, 92 29, 188166, 188170, 403372, B65H 5910
Patent
active
045640882
ABSTRACT:
A braking device for arresting an axial relative movement between a bearing, and a shaft slidably engaging the bearing and extending through a cylinder which is axially immovable to the bearing. The device comprises: an annular piston slidably received in the cylinder and slidably engaging the shaft; a brake shoe engaging the shaft axially immovably relative to the cylinder and radially contractible to apply a brake to the shaft; a resilient radial clamp member engaging the outer surface of the brake shoe, axially compressible by axial movement of the annular piston and thereby reduced in inside diameter to force the brake shoe against the surface of the shaft; and a piston driving device for moving the shaft along its axis through a controlled selective supply of a pressurized fluid to the cylinder. The piston driving device may comprise a coil spring to bias the piston to cause an axial compression of the radial clamp member, and a device for effecting the controlled supply of the fluid. The shaft may be normally arrested or released by appropriate arrangement of the piston driving device.
REFERENCES:
patent: 1637383 (1927-08-01), Livergood
patent: 2988058 (1961-06-01), Warnecke
patent: 3009747 (1961-11-01), Pitzer
patent: 3176590 (1965-08-01), Uhtenwoldt et al.
patent: 3203513 (1965-08-01), Allen
patent: 3643765 (1972-02-01), Hanchen
patent: 3805679 (1974-04-01), Wray
patent: 3828893 (1974-08-01), Clark
Nakayama Motoichi
Takahashi Mikio
Halvosa George E. A.
Kyoho Machine Works, Ltd.
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