X-ray marker

Details X-ray marker X-ray marker

1977-06-20

1978-11-28

Smith, Alfred E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Photographic type

40597, G03B 4116

Patent

active

041277740

ABSTRACT:
Plastic, color-coded X-ray marker with a cavity containing mercury. The cavity has deeper central portion and shallower branches, relative to the face of the marker. An X-ray negative shows the mercury in the central portion if the X-ray film was flat when exposed and shows the mercury in one or more branches indicating up and down direction if the X-ray film was upright when exposed. The cavity preferably has an asterisk shape whereby the mercury forms an arrow shape indicating up direction on the negative when the film was upright when exposed. Lead indicia indicated right or left and operator's initials. Markers are secured to film holders by a multiplicity of suction cups.

REFERENCES:
patent: 2433480 (1947-12-01), Rendich
patent: 2649548 (1953-08-01), Greenberg
patent: 4058733 (1977-11-01), Stembel

Affiliated with

Also associated with

Rating

X-ray marker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with X-ray marker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray marker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-979062