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US 4,486,918 AGranted
Snap action removable knob
AssigneeMotorola, Inc.
InventorDouglas D. Peebles
Life of this patent
Estimating the term…
Abstract
A knob assembly is provided which includes a knob having an integral shaft. The knob further includes a circular groove therein, and first and second cams situated in the groove. A knob receiving member includes an aperture in which the shaft of the knob is situated. Two snap fingers of flexible material extend from the sides of the aperture to engage the knob when the knob is pressed into the aperture. The knob is conveniently removed from the aperture by rotating the knob until the first and second cams contact and push the first and second snap fingers, respectively, out of the groove.
Claims6
A knob assembly comprising:
- a knob including a substantially cylindroidal shaft portion having a substantially circular groove therein, and first and second cams situated spaced apart in said groove by a predetermined angle therebetween,
- a knob receiving member having upper and lower opposed surfaces including an aperture for receiving the shaft of said knob therein, and first and second flexible engaging means being situated extending into said aperture so as to engage said groove when the shaft portion of said knob is inserted in said aperture, said first and second engaging means being situated spaced apart in said aperture by an angle therebetween substantially equal to said predetermined angle,
- whereby said knob is removable from said knob receiving member when said knob is appropriately rotated such that said first and second cams contact and push said first and second engaging means, respectively, out of said groove.
Dependencies are inferred from the claim text.