The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 1978
Filed:
Jun. 14, 1977
Reinhard Sobotta, Brunswick, DE;
Rollei-Werke Franke & Heidecke, Brunswick, DE;
Abstract
A double slide projector having two slide projection assemblies, a common magazine for slides, and a common slide changer, uses a motion transmitting arrangement from a drive to the changer so that the changer is moved a full stroke for moving slides from the magazine to the more remote projection assembly and the changer motion is blocked at a partial stroke for movement of slides from the magazine to the nearer projection assembly. A drive provides sufficient movement to move the changer for a full stroke for each actuation, and a slip clutch is arranged in the motion transmitting device so that the changer can move alternately between a full-stroke and a blocked or partial-stroke position. A double-track cam is preferred for the drive, and an arrangement of levers connected through the slip clutch is preferred for transmitting motion from the cam to the gripper portion of the slide changer.