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US3603235A Expired / Lapsed US ⏱️ 0.0 years remaining

Shutter-operating and film-advancing mechanism

Assignee: 3M Co
•
Filing: 1969-02-07
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Granted: 1971-09-07
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Expires: 1989-02-07
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Abstract

Abstract Shutter-operating and film-advancing mechanism designed to assure exposure of each frame of film in a camera but to prevent double-exposure of any one frame of film. The mechanism includes shutter-actuating and film-advance-actuating members movable to energized positions; drive means for advancing the film-advanceactuating member to an energized position; connection means connecting the shutter-actuating member to the film-advanceactuating member so that the former is moved to an energized position as the latter is moved to its energized position; and trigger means operable when the two members are in their energized positions for disconnecting them, whereupon (a) the shutter-actuating member quickly moves to its rest position and operates the shutter and (b) the film-advance-actuating member, upon release of the drive means, later moves to its rest position and advances film. Generally, the shutter-actuating member strikes and opens an impact shutter, and the film-advanceactuating member engages a lever movable to advance film one frame-length.

Inventors

  • 👤 Norman E Nelson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 23:06
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42

Claims Analysis

Total Claims: 41
Claim 1
Independent Claim 281 words
In a camera having, 1. a shutter that is opened for a short picture-taking interval when a part of the shutter is moved, and 2. a lever that is movable to cause rotation of a takeup spool in an increment of rotation sufficient to advance film in the camera one frame-length, shutter-actuating and film-advance-actuating mechanism comprising 1. a shutter-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position; 2. a film-advance-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position; 3. a striker attached to the shutter-actuating member and adapted to move said part of the shutter during the return movement of the shutter-actuating member from its energized position to its rest position; 4. engaging means on the film-advance-actuating member adapted to engage the lever during return movement of the filmadvance-actuating member adapted to engage the lever during return movement of the film-advance-actuating member from its energized position to its rest position; 5. drive means operable by the camera user to forward the filmadvance-actuating member to its energized position and releasable to permit the member to return under the force of the spring tension from its energized position to its rest position; 6. connection means connecting the shutter-actuating member to the film-advance-actuating member so that forward movement of the film-advance-actuating member causes the shutter-actuating member to move forward; and 7. trigger means operable when the shutter-actuating and filmadvance-actuating members are in their energized position for disconnecting the shutter-actuating member from the filmadvance-actuating member, whereupon the shutter-actuating member returns under the force of the spring tension from its energized position to its rest position.
Claim 2
Dependent Claim 281 words
In a camera having, 1. a shutter that is opened for a short picture-taking interval when a part of the shutter is moved, and 2. a lever that is movable to cause rotation of a takeup spool in an increment of rotation sufficient to advance film in the camera one frame-length, shutter-actuating and film-advance-actuating mechanism comprising 1. a shutter-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position; 2. a film-advance-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position; 3. a striker attached to the shutter-actuating member and adapted to move said part of the shutter during the return movement of the shutter-actuating member from its energized position to its rest position; 4. engaging means on the film-advance-actuating member adapted to engage the lever during return movement of the filmadvance-actuating member adapted to engage the lever during return movement of the film-advance-actuating member from its energized position to its rest position; 5. drive means operable by the camera user to forward the filmadvance-actuating member to its energized position and releasable to permit the member to return under the force of the spring tension from its energized position to its rest position; 6. connection means connecting the shutter-actuating member to the film-advance-actuating member so that forward movement of the film-advance-actuating member causes the shutter-actuating member to move forward; and 7. trigger means operable when the shutter-actuating and filmadvance-actuating members are in their energized position for disconnecting the shutter-actuating member from the filmadvance-actuating member, whereupon the shutter-actuating member returns under the force of the spring tension from its energized position to its rest position.
Claim 3
Dependent Claim 42 words
the connection means includes a lug that extends from the film-advance-actuating slide into abutment with an edge of the shutter-actuating slide, whereby movement of the film-advance-actuating slide from its rest position causes movement of the shutter-actuating slide from its rest position; and
Claim 4
Dependent Claim 42 words
the connection means includes a lug that extends from the film-advance-actuating slide into abutment with an edge of the shutter-actuating slide, whereby movement of the film-advance-actuating slide from its rest position causes movement of the shutter-actuating slide from its rest position; and
Claim 5
Dependent Claim 31 words
a lever that is movable to cause rotation of a takeup spool in an increment of rotation sufficient to advance film in the camera one frame-length, shutter-actuating and film-advance-actuating mechanism comprising
Claim 6
Dependent Claim 31 words
a lever that is movable to cause rotation of a takeup spool in an increment of rotation sufficient to advance film in the camera one frame-length, shutter-actuating and film-advance-actuating mechanism comprising
Claim 7
Dependent Claim 20 words
a film-advance-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position;
Claim 8
Dependent Claim 20 words
a film-advance-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position;
Claim 9
Dependent Claim 4 words
In a camera having,
Claim 10
Dependent Claim 4 words
In a camera having,
Claim 11
Dependent Claim 31 words
a stop-release lever that is movable to release a spring-biased takeup spool for an increment of rotation sufficient to advance film in the camera one frame-length, shutter-actuating and film-advance-actuating mechanism comprising
Claim 12
Dependent Claim 31 words
a stop-release lever that is movable to release a spring-biased takeup spool for an increment of rotation sufficient to advance film in the camera one frame-length, shutter-actuating and film-advance-actuating mechanism comprising
Claim 13
Dependent Claim 20 words
a film-advance-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position;
Claim 14
Dependent Claim 20 words
a film-advance-actuating member mounted in the camera for movement against spring tension from a rest position to an energized position;
Claim 15
Dependent Claim 46 words
a striker attached to the shutter-actuating member and having actuating and withdrawn positions in which the striker is, respectively, in, and not in, position to strike said part of the shutter during return movement of the shutter-actuating member from its energized position to its rest position;
Claim 16
Dependent Claim 46 words
a striker attached to the shutter-actuating member and having actuating and withdrawn positions in which the striker is, respectively, in, and not in, position to strike said part of the shutter during return movement of the shutter-actuating member from its energized position to its rest position;
Claim 17
Dependent Claim 32 words
a striker attached to the shutter-actuating member and adapted to move said part of the shutter during the return movement of the shutter-actuating member from its energized position to its rest position;
Claim 18
Dependent Claim 32 words
a striker attached to the shutter-actuating member and adapted to move said part of the shutter during the return movement of the shutter-actuating member from its energized position to its rest position;
Claim 19
Dependent Claim 10 words
The shutter-actuating and film-advance-actuating mechanism of claim 2 in which
Claim 20
Dependent Claim 51 words
The trigger means includes separator means for moving the shutter-actuating and film-advance-actuating slides apart when they reach their energized positions, whereby the lug is moved out of abutment with the edge of the shutter-actuating slide and the shutter-actuating slide is released for return movement under the influence of the spring tension.
Claim 21
Dependent Claim 51 words
The trigger means includes separator means for moving the shutter-actuating and film-advance-actuating slides apart when they reach their energized positions, whereby the lug is moved out of abutment with the edge of the shutter-actuating slide and the shutter-actuating slide is released for return movement under the influence of the spring tension.
Claim 22
Dependent Claim 81 words
The shutter-actuating and film-advance-actuating mechanism of claim 3 in which the striker is a flexible plate having a cam follower attached to it, the cam follower being in contact with an edge of the film-advance-actuating slide configured (a) to hold the striker in a flexed position when the shutter-actuating and film-advance-actuating slides are moved in forward direction and (b) to permit the striker to spring back to its unflexed condition when the shutter-actuating slide moves with respect to the film-advance-actuating slide.
Claim 23
Dependent Claim 38 words
engaging means on the film-advance-actuating member adapted to engage the lever during return movement of the film-advance-actuating member adapted to engage the lever during return movement of the film-advance-actuating member from its energized position to its rest position;
Claim 24
Dependent Claim 38 words
engaging means on the film-advance-actuating member adapted to engage the lever during return movement of the film-advance-actuating member adapted to engage the lever during return movement of the film-advance-actuating member from its energized position to its rest position;
Claim 25
Dependent Claim 43 words
engaging means on the film-advance-actuating member having actuating and withdrawn positions in which the engaging means is, respectively, in, and not in, position to engage the stop-release lever during return movement of the film-advance-actuating member from its energized position to its rest position;
Claim 26
Dependent Claim 43 words
engaging means on the film-advance-actuating member having actuating and withdrawn positions in which the engaging means is, respectively, in, and not in, position to engage the stop-release lever during return movement of the film-advance-actuating member from its energized position to its rest position;
Claim 27
Dependent Claim 39 words
drive means operable by the camera user to forward the film-advance-actuating member to its energized position and releasable to permit the member to return under the force of the spring tension from its energized position to its rest position;
Claim 28
Dependent Claim 39 words
drive means operable by the camera user to forward the film-advance-actuating member to its energized position and releasable to permit the member to return under the force of the spring tension from its energized position to its rest position;
Claim 29
Dependent Claim 92 words
The shutter-actuating and film-advance-actuating mechanism of claim 3 in which (a) the shutter-actuating slide remainS in its original plane of travel and the film-advance-actuating slide flexes away from the shutter-actuating slide to accomplish the movement apart of the two slides, (b) the engaging means is moved to actuating position by flexing of the film-advance-actuating slide away from the shutter-actuating slide, and (c) the lug engages the shutter-actuating slide after the latter''s return movement to rest position to hold the film-advance-actuating slide in its separated position during its return movement to rest position.
Claim 30
Dependent Claim 39 words
drive means operable by the camera user to forward the film-advance-actuating member to its energized position and releasable to permit the member to return under the force of the spring tension from its energized position to its rest position;
Claim 31
Dependent Claim 39 words
drive means operable by the camera user to forward the film-advance-actuating member to its energized position and releasable to permit the member to return under the force of the spring tension from its energized position to its rest position;
Claim 32
Dependent Claim 25 words
connection means connecting the shutter-actuating member to the film-advance-actuating member so that forward movement of the film-advance-actuating member causes the shutter-actuating member to move forward;
Claim 33
Dependent Claim 25 words
connection means connecting the shutter-actuating member to the film-advance-actuating member so that forward movement of the film-advance-actuating member causes the shutter-actuating member to move forward;
Claim 34
Dependent Claim 26 words
connection means connecting the shutter-actuating member to the film-advance-actuating member so that forward movement of the film-advance-actuating member causes the shutter-actuating member to move forward; and
Claim 35
Dependent Claim 26 words
connection means connecting the shutter-actuating member to the film-advance-actuating member so that forward movement of the film-advance-actuating member causes the shutter-actuating member to move forward; and
Claim 36
Dependent Claim 43 words
trigger means operable when the shutter-actuating and film-advance-actuating members are in their energized position for disconnecting the shutter-actuating member from the film-advance-actuating member, whereupon the shutter-actuating member returns under the force of the spring tension from its energized position to its rest position.
Claim 37
Dependent Claim 43 words
trigger means operable when the shutter-actuating and film-advance-actuating members are in their energized position for disconnecting the shutter-actuating member from the film-advance-actuating member, whereupon the shutter-actuating member returns under the force of the spring tension from its energized position to its rest position.
Claim 38
Dependent Claim 26 words
positioning means for maintaining the striker and engaging means in their withdrawn positions during movement of the shutter-actuating and film-advance-actuating members into their energized positions; and
Claim 39
Dependent Claim 26 words
positioning means for maintaining the striker and engaging means in their withdrawn positions during movement of the shutter-actuating and film-advance-actuating members into their energized positions; and
Claim 40
Dependent Claim 60 words
trigger means operable when the shutter-actuating and film-advance-actuating members are in their energized position for simultaneously causing a. disconnection of the shutter-actuating member from the film-advance-actuating member, whereupon the shutter-actuating member returns under the force of the spring tension from its energized position to its rest position, and b. movement of the striker and engaging means into their actuating positions.
Claim 41
Dependent Claim 60 words
trigger means operable when the shutter-actuating and film-advance-actuating members are in their energized position for simultaneously causing a. disconnection of the shutter-actuating member from the film-advance-actuating member, whereupon the shutter-actuating member returns under the force of the spring tension from its energized position to its rest position, and b. movement of the striker and engaging means into their actuating positions.

References Cited (Backward Citations)

US2933027A Cited
US2940682A Cited
US3039441A Cited
US2984166A Cited
US3232196A Cited
US3416424A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-06 1975-03-08 1975-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-06 1979-03-08 1979-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-06 1983-03-08 1983-09-07 $7700.00 Window Closed / Lapsed

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