Locking control device for electronic equipment & the like

Details Locking control device for electronic equipment & the like Locking control device for electronic equipment & the like

1991-05-31

1992-10-06

Braun, Leslie A.

Machine element or mechanism

Control lever and linkage systems

Elements

403345, G05G 110

Patent

active

051521873

ABSTRACT:
A locking control device is provided for electronic equipment and the like of the type having a rotary control member with a rotary spline shaft fixedly mounted through a housing by a nut. The locking control device consists of a gripping member secured in a stationary manner onto the housing about the rotary spline shaft on the rotary control member. A control knob having an enlarged collar and spline center bore is slideably mounted onto the rotary spline shaft above the gripping member. Rotation of the control knob will rotate the rotary spline shaft of the rotary control member. A mechanism within the enlarged collar of the control knob for engagedly mating its gripping surface with the gripping member, when the control knob is pushed completely down onto the rotary spline shaft, thereby preventing accidental movement of the rotary spline shaft.

REFERENCES:
patent: 2643903 (1953-06-01), Nathan
patent: 2704466 (1955-03-01), Way
patent: 3150634 (1964-09-01), Rosen
patent: 3430515 (1969-03-01), Lawrence, Jr.
patent: 3658107 (1972-04-01), Perina
patent: 3718009 (1973-02-01), Perina
patent: 3916703 (1975-11-01), Ribich et al.
patent: 4026397 (1977-05-01), Raus
patent: 4895043 (1990-01-01), Lee
patent: 4905442 (1990-03-01), Daniels
patent: 4920823 (1990-05-01), Mehr et al.
patent: 4991461 (1991-02-01), Sennett et al.

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