Knob and control shaft assembly with brake

Details Knob and control shaft assembly with brake Knob and control shaft assembly with brake

1975-11-17

1977-03-22

Wyche, Benjamin W.

Machine element or mechanism

Control lever and linkage systems

Elements

74531, 64 29, 192 12R, A61B 512, F16D 6702

Patent

active

040129667

ABSTRACT:
The knob comprises a body which cannot turn the control shaft unless the body is first pushed in. A brake prevents turning of the knob body when the body is in normal condition. Upon pushing the body rearwardly, the brake is disengaged to allow turning of the knob. Upon releasing the body, spring means projects the body forwardly back to normal condition in which the brake prevents the body from turning. Spring pressed balls allow the body to turn without turning the control shaft upon exerting excessive torque on the body to thereby prevent damage to the controls. Means is provided to limit turning of the control shaft to a predetermined angle.

REFERENCES:
patent: 1446652 (1923-02-01), Morris
patent: 2288955 (1942-07-01), Richardson et al.
patent: 2341647 (1944-02-01), Parkhurst
patent: 2600674 (1952-06-01), Natkins
patent: 2704466 (1955-03-01), Way
patent: 2919602 (1960-01-01), Sparagen
patent: 3198923 (1965-08-01), Trip
patent: 3561287 (1971-02-01), Lawrence

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