Title:
【発明の名称】3次元映画用映写機
Document Type and Number:
Japanese Patent JP2798298
Kind Code:
B2
Abstract:
A 3-D motion picture projector comprises two rolling loop film transport mechanisms (32,34) arranged in vertically superposed relationship with the principal components of the two mechanisms in vertical alignment with one another. Each film transport mechanism includes a cam unit (60,62) for decelerating the film as it approaches the aperture for projection. The two cam units are driven from a common vertical drive shaft (96) by toothed belt drives. The lower cam unit is mounted on an arm so that it can be swung out to an inoperative position for maintenance and service. The belt drives maintain the drive coupling at this time and automatically restore proper cam timing when the cam unit is returned to its operative position.
Inventors:
Marian Toppo Kievics
Application Number:
JP23979490A
Publication Date:
September 17, 1998
Filing Date:
September 10, 1990
Export Citation:
Assignee:
Imax Systems Corporation
International Classes:
G03B1/18; G03B35/16; G03B35/20; (IPC1-7): G03B35/16
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)