Automatic opening device for the window of a radiographic cassette

In a radiographic cassette having a window, an automatic opening device comprising:

• (a) a fixed bracket;
• (b) equipment adapted for sliding movement along said bracket between a position of engagement with said window and a position of full opening of said window, and motor means operatively connected to said equipment for effecting said sliding movement;
• (c) said equipment including vertical displacement means causing vertical sliding of a cap element between a position of engagement with said window and a position of disengagement with said window, and comprising elastic means counteracting vertical displacement of said cap element, said elastic means being compressed in said position of disengagement, at least one movable slide, sliding on said fixed bracket and trailing in its movement said cap element;
• (d) said equipment including a first movable slide, on which said vertical displacement means are connected with said motorized means, and a second movable slide mounted below said one movable slide that in turn slides on said second movable slide, said cap element extending vertically through both said first and second movable slides;
• and
• (e) said vertical displacement means consisting of a wedge carried by said first movable slide acting on a plurality of rollers displaced laterally of said cap element.