US PATENT SUBCLASS 475 / 301
.~ Brake or clutch on surface of helically coiled member

Current as of: June, 1999
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475 /   HD   PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS

269  DF  WITH MEANS TO VARY DRIVE RATIO OR DISCONNECT DRIVE (E.G., BRAKE OR CLUTCH) {16}
301.~ Brake or clutch on surface of helically coiled member

DEFINITION

Classification: 475/301

Brake or clutch on surface of helically coiled member:

(under subclass 269) Subject matter wherein a helically coiled resilient device has a frictional surface which expands or contracts into engagement with two relatively movable members to function as a clutch*, or which expand or contracts into engagement with a moveable and stationary member to function as a brake*.

SEE OR SEARCH CLASS

188, Brakes, for, per se.

192, Clutches and Power-Stop Control,

41, for this type clutch.