US PATENT SUBCLASS 280 / 43.21
.~.~.~.~ Rack and pinion or ratchet type

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
638  DF  .~ Extensible {6}
43  DF  .~.~ Vertically adjustable wheels {8}
43.17  DF  .~.~.~ With actuator {6}
43.21.~.~.~.~ Rack and pinion or ratchet type

DEFINITION

Classification: 280/43.21

(under subclass 43.17) Vehicle wherein the actuating means comprises a rack member meshing with a gear or engageable by a ratchet member.

SEE OR SEARCH CLASS

172, Earth Working,

420, for rack and pinion or ratchet type actuators for ground support members adapted to move with a translating motion relative to the earth working frame supported, and subclass 428 for rack and pinion or ratchet actuators to move a ground support for an earth working implement vertically relative to the implement frame.