Title:
SLIDE PROJECTOR
Document Type and Number:
Japanese Patent JPS5332733
Kind Code:
A
Abstract:
PURPOSE: To stabilize tensile strength of spring for slide projector at all times and limit in a constant range by changing the lenging the length of the spring step-wise and automatically by the use of plural pulleys.
Inventors:
TAMURA YUTAKA
SUGI MASAO
TAKEDA KAZUTADA
SUGI MASAO
TAKEDA KAZUTADA
Application Number:
JP10823076A
Publication Date:
March 28, 1978
Filing Date:
September 07, 1976
Export Citation:
Assignee:
SANYO ELECTRIC CO
International Classes:
G03B21/00; G03B23/02; (IPC1-7): G03B23/02