公开(公告)号：US3702721A

公开(公告)日：1972-11-14

申请号：US3702721D

申请日：1970-05-11

Applicant: AUDISCAN INC

Inventor： SKUJA IVARS M

IPC: G03B21/10 ,  G03B21/32

CPC classification number: G03B21/10 ,  G03B21/323

Abstract: A FILM PROJECTION SYSTEM EMPLOYING A FILM AND SOUND TAPE CARTRIDGE ADAPTED TO THE INSERTED ALONG A LINEAR PATH INTO THE PROJECTOR FOR FILM PROJECTION AND SOUND REPRODUCTION. FILM ADVANCE IS SYNCHRONIZED WITH THE SOUND REPRODUCTION BY RECORDED SIGNALS ON THE SOUND TAPE THAT CONTROL THE FILM ADVANCE ACTUATING MECHANISM.

公开(公告)号：US3612673A

公开(公告)日：1971-10-12

申请号：US3612673D

申请日：1970-01-09

Applicant: AUDISCAN INC

Inventor： SKUJA IVARS M

IPC: G03B1/22 ,  G03B1/56 ,  G03B1/48 ,  G03B1/18

CPC classification number: G03B1/22 ,  G03B1/56

Abstract: A film advance mechanism of two sections. The two sections are provided with two adjacent inner surfaces that guidingly advance film frame by frame, gate the film during advancement and mask the images for projection.. Cooperating teeth are provided on the inner surfaces to engage the film sprocket holes of the film for advancing the film. The teeth extend into notches formed in the inner surfaces of the opposite sections.