1992-04-13
1993-11-30
Hayes, Monroe H.
74545, 74553, G03B 118
Patent
active
052669912
ABSTRACT:
An auxiliary knob used in conjunction with camera focusing knobs to improve the focusing operation and improve access for focusing. An elastomeric body includes a recess frictionally receiving the camera focusing knob, and a knob turning surface defined upon the elastomeric body of a diameter substantially greater than the diameter of the camera focusing knob reduces the effort required for focusing and improves knob access. Reduced wall thickness lips and rims defined on the auxiliary knob facilitate cooperation with the camera focusing knob and improve the knob handling characteristics.
REFERENCES:
patent: 372649 (1887-11-01), Aloen
patent: 2688678 (1954-09-01), Henderson
patent: 4117568 (1978-10-01), Bullock
patent: 4220054 (1980-09-01), Kuhlman
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