1988-07-12
1990-05-15
Mathews, A. A.
354249, 354250, G03B 918, G03B 940
Patent
active
049262025
ABSTRACT:
A camera shutter has a shutter base plate for pivotally supporting blade groups each constituted by a plurality of blades carried by arms and a thick-walled portion formed on the surface of the shutter base plate that carries the blade groups. The thick-walled portion is formed in an area which excludes a pivoting area in which the arms make their pivotal motions and which is adjacent to the pivoting area. The shutter base plate and the thick-walled portion are integrally formed of a synthetic resin.
REFERENCES:
patent: 4009946 (1977-03-01), Geyer et al.
patent: 4054892 (1977-10-01), Nakagawa et al.
patent: 4150890 (1979-04-01), Nakagawa et al.
patent: 4714336 (1987-12-01), Suzuki et al.
Fukuda Tsuyoshi
Shimada Fumio
Canon Kabushiki Kaisha/Canon Denshi Kabushiki Kaisha
Mathews A. A.
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