Abstract: A device enabling blocking of a slot formed in a wall separating two medi and the free access, in the open position, from one medium to the other, of a flat object, characterized in that it comprises a cylindrical element pivoted about its axis placed in front of the said slot, having an elongated radial opening therethrough, the said cylinder being provided with a drive member for rotating the same and a position control for stopping said cylinder in predetermined positions.
Type:
Grant
Filed:
December 12, 1975
Date of Patent:
July 26, 1977
Assignee:
Transac - Compagnie Pour le Developpment des Transactions Automatiques