X-ray unit stand having field controlled brake release

Details X-ray unit stand having field controlled brake release X-ray unit stand having field controlled brake release

1977-02-02

1978-11-28

Smith, Alfred E.

Radiant energy

Radiant energy generation and sources

With container for radioactive source and radiation...

250445R, 250525, G01N 2100

Patent

active

041277759

ABSTRACT:
A counter-balanced radiography unit stand comprises a column on which a wing arm bearing the radiography equipment is mounted for vertical displacement and rotary movement. Automatically applied brakes for stopping the vertical displacement and the rotary movement, respectively, are electromagnetically releasable by electrically controlled actuating devices, which when approached or contacted by, for example, the hand of an operator, release the corresponding brake so that the swing arm can be rotated and/or displaced. At least one actuating device for releasing the rotary movement brake and/or the vertical displacement brake is so disposed along a substantial part of the swing arm length, that easy reach of the device is accomplished by a person positioned anywhere in the region of the swing arm.
The said actuating device may comprise at least one handle disposed on the swing arm. In addition external parts of the swing arm may have a blocking element of adjustable sensitivity adapted to control a superimposed blocking function so that the release circuits for the brakes are disconnected when the swing arm approaches or strikes against a person or an object.

REFERENCES:
patent: 2997591 (1961-08-01), Guentner et al.
patent: 3121793 (1964-02-01), Thomas
patent: 3215835 (1965-11-01), Mueller
patent: 3790805 (1974-02-01), Foderaro
patent: 3866048 (1975-02-01), Gieschen et al.

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