X-ray unit stand having field controlled brake release
US4127775A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1977 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Feb 2, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/105
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.