Shutter mechanism prevents accidental shutter opening due to phy

Details Shutter mechanism prevents accidental shutter opening due to phy Shutter mechanism prevents accidental shutter opening due to phy

1999-04-01

2000-05-30

Adams, Russell

Photography

Camera detail

Shutter

396453, 396490, 396500, 396503, G03B 908

Patent

active

060684127

ABSTRACT:
A shutter mechanism comprising an aperture through which ambient light is passed to cause a film exposure, a pair of shutter blades supported for pivotal opening movement in opposite opening directions away from one another to uncover the aperture to permit ambient light to pass through the aperture and for pivotal closing movement in return closing directions towards one another to re-cover the aperture and supported to allow them to be pivoted simultaneously in the same direction to cause accidental shutter opening when a physical shock is applied to the shutter blades in the opening direction of one of the shutter blades, is characterized in that each one of the shutter blades completely covers the aperture in order that both of the shutter blades must be removed from the aperture to uncover the aperture to permit ambient light to pass through the aperture, and a single fixed stop is positioned between the shutter blades to prevent either one of the shutter blades from pivoting in the same direction as the other shutter blade to uncover the aperture when one of the shutter blades is pivoted in its opening direction, whereby when one of the shutter blades is pivoted in its opening direction because a physical shock is applied to the shutter blades in that direction the fixed stop prevents the other blade from pivoting in the same direction to cause accidental shutter opening.

REFERENCES:
patent: 272117 (1883-02-01), Boydston
patent: 437290 (1890-09-01), Colgate
patent: 463284 (1891-11-01), Burrows
patent: 501866 (1893-07-01), Brownell
patent: 529369 (1894-11-01), Delug
patent: 1024242 (1912-04-01), Atherton
patent: 2249517 (1941-07-01), Crumrine
patent: 3081683 (1963-03-01), Horton et al.
patent: 3319554 (1967-05-01), Bresson et al.
patent: 3474716 (1969-10-01), Wurster
patent: 3678839 (1972-07-01), Michealis
patent: 4017876 (1977-04-01), Coughlan et al.
patent: 4038674 (1977-07-01), Whiteside et al.
patent: 4114175 (1978-09-01), Huber et al.
patent: 4775872 (1988-10-01), Smart
patent: 4962398 (1990-10-01), Sorg et al.
patent: 5255037 (1993-10-01), Kobayashi
patent: 5721995 (1998-02-01), Katsura et al.

Affiliated with

Also associated with

Rating

Shutter mechanism prevents accidental shutter opening due to phy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shutter mechanism prevents accidental shutter opening due to phy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shutter mechanism prevents accidental shutter opening due to phy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1905927