US PATENT SUBCLASS 267 / 171
.~.~ Equilibrium or over-center


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

166  DF  COIL {6}
170  DF  .~ Including end thrust member {7}
171.~.~ Equilibrium or over-center


DEFINITION

Classification: 267/171

(under subclass 170) Spring device, further including a second end thrust member at the other end of the spring element; and in which the spring element is adapted either (a) to maintain said end thrust members a predetermined distance apart or (b) selectively to maintain one of the members, or the contact point between said one member and the end of the element, at each of a pair or predetermined positions on opposite sides of the helix axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

159, for an over-center snap spring of leaf or disc construction.