Manual control knob with adjustable pointer assembly
AssigneeThe Tappan Company
InventorsStephen K. Harris, Wiley W. Miller
Life of this patent
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Abstract
An adjustable knob assembly for operating a gas valve includes a rotatable knob affixable to the shaft of the gas valve and having a hub with an axially extending ridge. An annular pointer is angularly displaceably affixed to the hub and has opposed sets of adjacent grooves selectively alignable to engage the ridge on the hub, to permit angular displacement of the pointer with respect to the shaft.
Claims9
In a knob assembly for a rotatable shaft of an appliance, the knob assembly having a manually rotatable knob adapted to be affixed to the shaft, and a pointer means angularly displaceably affixed to the knob, the improvement wherein said knob has a rearwardly extending hub with a generally circular cross section and a central aperture for receiving said shaft, an axially extending ridge having its longitudinal extent along and unitary with the outer circumference of said hub, said pointer means comprising an annular element having an outer diameter greater than that of said knob and a central aperture for receiving said hub, the central aperture of the pointer means having two groups of a plurality of circumferentially spaced axially extending recesses, said recesses each being adapted to selectively engage said ridge to inhibit relative rotation of the knob and pointer means, and means releasably holding said pointer means on said hub with said ridge extending into a selected one of said recesses.
Dependencies are inferred from the claim text.