US PATENT SUBCLASS 400 / 440.2
.~.~.~ Cantilever spring (e.g., torsion, hairpin, etc.)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

383  DF  TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER {19}
436  DF  .~ Type-bar return spring connected to type-bar-action linkage {4}
440  DF  .~.~ Attached to key lever (e.g., tension spring) {2}
440.2.~.~.~ Cantilever spring (e.g., torsion, hairpin, etc.)

DEFINITION

Classification: 400/440.2

Cantilever spring (e.g., torsion, hairpin, etc.):

(under subclass 440) Subject matter wherein the resilient or yieldable means is an elongated component having two ends, one of the ends being fixed to the frame of the typewriter and the other of the ends being movable to exert a returning force.

(1) Note. The spring may be configured as a leaf spring or a torsion spring or a hairpin spring, these being only exemplary of the configurations used.