Positive-positioning knob assembly

Details Positive-positioning knob assembly Positive-positioning knob assembly

1986-12-15

1988-10-25

Silverberg, Fred A.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Sash balances

Spring

16DIG30, 74553, B25G 300

Patent

active

047793058

ABSTRACT:
A positive-positioning knob assembly comprises a knob body having a substantially hollow interior portion and a pinion member fixed against rotation relative to a panel, through which panel extends a shaft to be rotated by the knob assembly. Cooperating selectively interengageable and disengageable locking members are located on the pinion member and the hollow body interior respectively for alternatively permitting the body to rotate freely of the pinion member when the locking members are in a disengaged condition, and for locking the body non-rotatably relative to the pinion when the locking members are in an engaged condition. A resilient biasing member normally holds the locking members in the engaged condition to prevent rotation of the know body; however, the resilient biasing member is resiliently deformable for permitting the locking members to move to the disengaged condition to permit rotation of the knob body.

REFERENCES:
patent: 2704466 (1955-03-01), Way
patent: 3505884 (1970-04-01), Ford et al.
patent: 4084675 (1978-04-01), Smith et al.

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