Gravity actuated X-ray scanner
US4885761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1986 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | May 15, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4405
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A digital scan projection radiography system is disclosed which is particularly adapted for the rigors of portable deployment. The system scans by gravity. A cam mechanism is employed which raises the pivot of a pivotally suspended scanner assembly including source, detector and other components to render gravitational potential energy of the scanner assembly approximately linear with respect to angular scanning displacement. This feature enables limiting scanning angular velocity to an approximately constant value with the aid of only a friction brake. The feature also causes the detector scanning path to more closely approximate a linear path than an arcuate path which would result from simple pivotal pendulum scanning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.