US3662664A — Camera shutter incorporating a governor mechanism

Claim 1

Independent Claim 221 words

A camera lens shutter, comprising a plurality of overlapping shutter blades disposed in a plane perpendicular to the longitudinal axis of the lens for serving both as a shutter and a diaphragm; an actuating ring for opening and closing the shutter blades disposed in a plane parallel to the plane of the shutter blades and connected to said shutter blades to actuate said blades upon rotation thereof; a driving member for driving said actuating ring when an exposure is made; a regulating ring for presetting an exposure value to adjust the opening size and the opening duration of the shutter blades when the shutter blades are actuated, said ring being disposed in a plane parallel to said actuating ring to support said shutter blades for their opening and closing; means for connecting said actuating ring to said regulating ring to rotate the same in unison in adjusting said regulating ring according to the exposure value and for changing the amount of rotation of said actuating ring by said driving means according to the exposure value; a governor member supported on one of said two rings for adjusting shutter speed; and a cooperating member cooperating with said governor member disposed on the other of said rings thereby controlling shutter speed at the exposure setting by the relative movement between said two rings.

Claim 2

Dependent Claim 221 words

A camera lens shutter, comprising a plurality of overlapping shutter blades disposed in a plane perpendicular to the longitudinal axis of the lens for serving both as a shutter and a diaphragm; an actuating ring for opening and closing the shutter blades disposed in a plane parallel to the plane of the shutter blades and connected to said shutter blades to actuate said blades upon rotation thereof; a driving member for driving said actuating ring when an exposure is made; a regulating ring for presetting an exposure value to adjust the opening size and the opening duration of the shutter blades when the shutter blades are actuated, said ring being disposed in a plane parallel to said actuating ring to support said shutter blades for their opening and closing; means for connecting said actuating ring to said regulating ring to rotate the same in unison in adjusting said regulating ring according to the exposure value and for changing the amount of rotation of said actuating ring by said driving means according to the exposure value; a governor member supported on one of said two rings for adjusting shutter speed; and a cooperating member cooperating with said governor member disposed on the other of said rings thereby controlling shutter speed at the exposure setting by the relative movement between said two rings.

Claim 3

Dependent Claim 227 words

A camera lens shutter, comprising a first ring and a second ring in juxtaposition, both rings being coaxial with the lens axis; a plurality of shutter blades rotatably mounted on the first ring and connected to the second ring, projections on said rings, resilient means interconnecting the two rings and biasing the rings to abut the projections on the respective rings to permit rotation of the rings in unison to maintain the shutter blades closed upon rotation of the first ring to set the diaphragm opening, a first pin on the second ring positionable thereby upon rotation thereof, a biased lever in the path of the first pin, a driving lever for moving the biased lever upon release of the camera shutter release button to rotate the second ring through the first pin relative to the first ring to open the shutter blades, a second pin on the second ring spaced from the first pin, said second pin being in the path of movement of the driving lever and abutted thereby to rotate the second ring relative to the first ring to close the shutter blades, and a governor mechanism including a governor member mounted on one of the rings and a projection on the other of said rings for abutment by the governor member, the degree of abutment being determined by rotation of the second ring.

Claim 4

Dependent Claim 227 words

A camera lens shutter, comprising a first ring and a second ring in juxtaposition, both rings being coaxial with the lens axis; a plurality of shutter blades rotatably mounted on the first ring and connected to the second ring, projections on said rings, resilient means interconnecting the two rings and biasing the rings to abut the projections on the respective rings to permit rotation of the rings in unison to maintain the shutter blades closed upon rotation of the first ring to set the diaphragm opening, a first pin on the second ring positionable thereby upon rotation thereof, a biased lever in the path of the first pin, a driving lever for moving the biased lever upon release of the camera shutter release button to rotate the second ring through the first pin relative to the first ring to open the shutter blades, a second pin on the second ring spaced from the first pin, said second pin being in the path of movement of the driving lever and abutted thereby to rotate the second ring relative to the first ring to close the shutter blades, and a governor mechanism including a governor member mounted on one of the rings and a projection on the other of said rings for abutment by the governor member, the degree of abutment being determined by rotation of the second ring.

Claim 5

Dependent Claim 37 words

A camera lens shutter according to claim 2, wherein the biased lever is pivotably mounted and biased in one direction, and the driving lever is pivotably mounted and biased in a direction opposite to the one direction.

Claim 6

Dependent Claim 53 words

A camera lens shutter according to claim 2, wherein the governor member comprises a pivotable sector gear including a lever arm, and a pinion meshing with the sector gear and formed with an inertia body, the lever arm being formed with a curved surface cooperating with projection on the other of said rings.

Claim 7

Dependent Claim 92 words

A camera lens shutter according to claim 1, wherein the governor member and cooperating member include a pivotable sector gear mounted on one ring, an extending lever on said sector gear formed with a curved surface, a projection on the other ring engaged by the lever arm curved surface, the degree of engagement of the curved surface and projection being determined by the relative rotation of the two rings, and a pinion rotatably mounted on the one ring and meshing with the gear sector, said pinion being provided with an inertia body.

Claim 8

Dependent Claim 89 words

A camera lens shutter according to claim 2 wherein the governor mechanism includes a pivotable sector gear mounted on one ring, an extending lever on said sector gear formed with a curved surface, a projection on the other ring engaged by the lever arm curved surface, the degree of engagement of the curved surface and projection being determined by the relative rotation of the two rings, and a pinion rotatably mounted on the one ring and meshing with the gear sector, said pinion being provided with an inertia body.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-05-16	1975-11-15	1976-05-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-05-16	1979-11-15	1980-05-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-05-16	1983-11-15	1984-05-16	$7700.00	Window Closed / Lapsed

Camera shutter incorporating a governor mechanism

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