US PATENT SUBCLASS 267 / 206
.~.~.~.~ Helical cam surface

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

2  DF  VEHICLE {14}
195  DF  .~ Mechanical spring and nonresilient retarder (e.g., shock absorber) {2}
196  DF  .~.~ Friction (e.g., "snubber") {7}
205  DF  .~.~.~ Including cam or wedge friction element or actuator therefor {4}
206.~.~.~.~ Helical cam surface

DEFINITION

Classification: 267/206

Helical cam surface:

(under subclass 205) Spring device wherein the sloped or curved surface defines or is formed upon a helix.

SEE OR SEARCH THIS CLASS, SUBCLASS:

204, for retarding devices where a helical spring serves as one of the friction surfaces.