Shutter mechanism

Details Shutter mechanism Shutter mechanism

1998-08-21

2000-01-04

Perkey, W. B.

Photography

Camera detail

Shutter

G03B 910

Patent

active

060102527

ABSTRACT:
A shutter mechanism for a camera having an integrally molded plastic frame is provided. The shutter mechanism includes a high energy lever (HEL) having an arm rotatably mounted to the camera frame, and a finger projecting from an end of the arm that moves across an arcuate path when the lever arm rotates; a shutter blade pivotally mounted on the frame having a lever portion for pivoting a masking portion into an exposure position when struck by the finger of the HEL, and a retainer including a wall that is integrally connected to the camera frame for retaining the finger of the lever in a shutter-striking arcuate path when the arm rotates. The length of the lever arm is relatively short relative to the length of the projecting finger that strikes the shutter blade in order to eliminate unwanted flexing of the high energy lever during an exposure operation. The guidance that the integrally connected retainer wall provides to the lever finger, in combination with the short length of the HEL arm relative to its finger increases the accuracy and reliability of the shutter operation.

REFERENCES:
patent: 3661066 (1972-05-01), Ettischer et al.
patent: 3672285 (1972-06-01), Stoneham
patent: 5181057 (1993-01-01), Takagi et al.

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