X-ray or gamma ray systems or devices – Source support – Including movable source
Patent
1989-12-29
1990-10-16
Church, Craig E.
X-ray or gamma ray systems or devices
Source support
Including movable source
378193, H05G 102
Patent
active
049641506
ABSTRACT:
An adjustable X-ray examination apparatus comprises an auxiliary force element, for example, a weight or a resilient element in order to reduce varying counterforces occurring in a drive mechanism thereof, which auxiliary force element exerts a force which increases in the course of the adjustment. The force acts notably with a moment which increases towards the extreme zone of an adjustment. The auxiliary force element may be mounted and adjusted so that a substantially constant external force suffices for a full range of adjustment of the X-ray examination apparatus.
REFERENCES:
patent: 3770955 (1973-11-01), Tomita et al.
patent: 3892967 (1975-07-01), Grady et al.
patent: 4591122 (1986-05-01), Kreuzer
Van Der AA Antonius G.
Van Genechten Theodorus J. M.
Church Craig E.
Squire William
U.S. Philips Corporation
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