Arrangement in counter-weight balanced x-ray frame structures
US4759048A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jan 29, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/105
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A counter-weight balanced X-ray frame (1) has a vertical column (2) on which a pendulum arm (3) carrying X-ray equipment (4, 5) is mounted for vertical movement therealong and rotational movement therearound. A brake disc (10) for arresting rotational movement and actuated by a magnetic brake (11) is incorporated in a centering mechanism adapted to seek one or more pre-determined positions for the pendulum arm, e.g. when it forms an angle with the frame of 0.degree., 90.degree., 180.degree. or 270.degree., without the operator needing to interfere in the sequence of movements. When the relevant setting position is approached, the operator need only carry out the operating movement which activates corresponding brake means--for example releases a corresponding operating handle on the pendulum arm--whereupon the pendulum arm itself adopts the pre-determined setting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.