Safety shut-off for swing bar tools

Details Safety shut-off for swing bar tools Safety shut-off for swing bar tools

1982-06-24

1984-10-02

Krizmanich, George H.

192 clutches and power-stop control

Stop mechanism

Overload release

173 12, 81370, F16D 4320

Patent

active

044742797

ABSTRACT:
A safety shut off mechanism for a fluid-powered motor comprises a reaction torque structure tending the rotate in a direction opposite to the direction of rotation of the motor under load a swing-bar for normally restraining the reaction torque structure against rotation, a reference structure for providing a point of reference as to movement of the reaction torque structure, a locking structure actuated by fluid pressure for locking the reference structure against rotation, a retaining structure tending to retain the reaction torque structure and the reference structure in a predetermined orientation relative to each other, and a shut-off structure for depriving the motor of the motive force of the fluid in response to relative movement between the reaction torque structure and the reference structure upon failure of the swing-bar.

REFERENCES:
patent: 2893278 (1959-07-01), Rice
patent: 3507173 (1970-04-01), Wallace
patent: 3812744 (1974-05-01), Westerberg
patent: 4004859 (1977-01-01), Borries
patent: 4064771 (1977-12-01), Krieg
patent: 4113080 (1978-09-01), Thackston et al.
patent: 4418764 (1983-12-01), Mizobe
patent: 4429775 (1984-02-01), Teramoto

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