Class 396/456 - Of focal plane shutter

Subclass of Class 396 - Photography
Definition: Subject matter wherein the light interrupting member is
No. of patents: 37
Last issue date: 06/01/2010

Number	Title	Issue Date
7726889	Optical device and method for removing foreign substances from the optical device Foreign substances adhered to a focal plane shutter are shaken off by vibrationally driving the shutter a plurality of times in succession while the focal plane shutter, which controls the incidence of light on a photoelectric transducer converting an optical image ...	06/01/2010
7212244	Focal plane shutter apparatus A focal plane shutter apparatus is constructed by a light shielding blade, a fitting pin attached to the blade and an arm which is slidably engaged with the fitting pin to open or close the blade. A surface hardness of the fitting pin is higher than that of the arm....	05/01/2007
7178998	Focal plane shutter for digital still cameras A drive member attached to the output shaft of a DC motor placed on a shutter base board includes a drive pin connected to the arm of a shutter blade within a blade chamber for driving the shutter blade to open and close an exposure opening with the reciprocal rotat...	02/20/2007
7070343	Sector drive assembly for camera A sector drive assembly for a camera with reduced power consumption has a base plate having an aperture, one or more sectors capable of opening and closing the aperture, an electromagnetic actuator for driving the sectors, a drive force transmitting mechanism for tr...	07/04/2006
7025513	Optical apparatus, shutter device, and camera A shutter/filter unit as an optical apparatus includes a shutter actuator, a filter actuator, a shutter drive ring, two shutter blades, and one ND filter, which are connected to a driving source body in series. The shutter blades are rotationally driven via the shut...	04/11/2006
6899473	Focal plane shutter for cameras A focal plane shutter for cameras is provided with a shutter blade which can be actuated to both directions for opening and for closing a photographing optical path by an electromagnetic apparatus. When a rotor is rotated to the direction corresponding to the direct...	05/31/2005
6795122	Focal-plane shutter for digital still cameras A focal-plane shutter for digital still cameras includes a first blade and a second blade, each having a plurality of arms and at least one blade component pivotally supported thereby; a driving member for the first blade, opening an exposure aperture through the fi...	09/21/2004
6783287	Focal-plane shutter for digital camera When the main power of a camera is turned on, a set member (14) is rotated from an initial position to a set position by an operation member (15) on the camera side and once stops at a midway position. At this time, a second blade group (19) ret...	08/31/2004
6726379	Camera focal plane shutter A camera focal plane shutter according to the invention comprises a shutter blade for opening and closing an exposure aperture to carry out an exposure operation; an electromagnetic actuator for directly driving the shutter blade, and a positioning means for positio...	04/27/2004
6530703	Focal-plane shutter having resilient stopping members for shutter blades A focal-plane shutter comprises a shutter plate having a shutter opening, opening blades and closing blades for opening and closing the shutter opening, and arms connected by connector portions to the opening and closing blades for driving the blades para...	03/11/2003
6494626	Focal plane shutter A focal plane shutter capable of carrying out electric automatic exposure control and mechanical manual exposure control comprises a selecting member for selecting an automatic exposure position and a plurality of exposure time period positions, a switchi...	12/17/2002
6123467	Link mechanism shutter device A shutter device functioning as a focal-plane shutter device for cameras, includes a shutter blade, a base plate, a first arm member and a second arm member. The first arm member has one end portion rotatably fitted to the shutter blade and further has th...	09/26/2000
6071019	Shutter device In a shutter device having a first driving lever which engages a shutter blade and which is given an urging force by a first spring and a second driving lever which is given an urging force by a second spring and which pushes the first driving lever from ...	06/06/2000
6001465	Light shielding blade for camera made of para-orientation aromatic polyamide film A light-shielding blade for use in cameras utilizes a film of para-type aromatic polyamide for its base material. The light-shielding blade has a single-layer structure using an aramid film as its blade material. The film is added with carbon black at a r...	12/14/1999
5664247	Shutter brake mechanism A durable brake mechanism comprises shutter blades; arms that support the shutter blades; drive pins, which are linked to the arms and cause the shutter blades to move by driving the arms; and brake levers, which contact the drive pins and apply a braking...	09/02/1997
5659821	Driving apparatus employing vibration type motor with standing wave control of camera shutter system The present invention relates to a driving apparatus arranged to perform driving control of a travelling member, such as a shutter member, by using a vibration wave motor. According to the present invention, the travelling member is arranged to be driven ...	08/19/1997
5467160	Focal-plane shutter device The present invention aims at improving the durability of a very high-speed shutter exceeding 1/8000 sec and further attaining a very high shutter speed even with sectors composed of a material exhibiting a low rigidity. For this purpose, a focal plane sh...	11/14/1995
5315335	Brake device for focal plane shutter A focal plane shutter comprising a front blade braking lever functioning to press a front blade actuating lever to a rotating shaft thereof by utilizing resilience of a front blade actuating spring at a final stage of an exposure operation performed by th...	05/24/1994
5034765	Focal-plane shutter A focal-plane shutter for use in a camera. The shutter has a driving lever which can be driven with a substantially uniform force. The shutter comprises a closing member for actuating closing blades, the driving lever that urges the closing member to perf...	07/23/1991
4975722	Focal plane shutter A focal plane shutter includes a first blade group which is moved forward from an unfolding state to an overlapping state to start an exposure in response to the release of a first blade driving spring and a second blade group which is moved forward from ...	12/04/1990
4847649	Brake device for shutter A brake device for a shutter includes a movable member which moves in association with run of shutter blades, the movable member being capable of being braked to brake run of the shutter blades, and a brake member which is moved in a followed manner by th...	07/11/1989
4829329	Brake device for a shutter A brake device of a shutter for braking the shutter nearly at the end of the travel of trailing shutter blades includes a moving member which is provided for the trailing blades and moves accordingly as the trailing blades travel; a brake lever for the tr...	05/09/1989
4739355	Focal plane shutter In order to enable to obtain stable exposure time even for successive photographing at high speeds and completely synchronize flashing without errors, the focal plane shutter comprising a front blade group and a rear blade group is adapted in such a manne...	04/19/1988
4692009	Braking device for shutter The present invention relates to a braking device for a focal plane shutter in a camera. In the early stage of a braking operation on a shutter curtain, a relatively weak braking force is applied, and in the closing stage of the braking operation, a stron...	09/08/1987
4657366	Shutter device for camera A focal plane shutter for camera comprises an opening blade group and a closing blade group, an opening blade-driving member and a closing blade-driving member, an exposure operation means for moving said blade-driving members for exposure operation, a br...	04/14/1987
4395105	Device for adjusting driving spring of focal plane shutter A device for adjusting a focal plane shutter driving spring includes a ratchet wheel which holds one end of the shutter driving spring and is arranged to adjust the driving force of the spring by the rotation thereof. The ratchet wheel is provided with a ...	07/26/1983
4326786	Electromagnetically driven shutter In a slit exposure shutter having leading and trailing blades driven to run down to make an exposure and to return to their initial positions by an electromagnetic drive source, this source is provided with electromagnetically operated latch means for hol...	04/27/1982
4316662	Brake device for shutter A brake device for use with a shutter having a driving member which runs down when the shutter is opened or closed, includes a brake member pivotally rotatable about a stationary shaft and arranged upon engagement with the shutter driving member to slow i...	02/23/1982
4302091	Bound preventing device for focal plane shutters A bound preventing device for focal plane shutters which is provided with a rear blade operating arm which can move a rear blade between an exposure aperture covering position and opening position and a brake lever which is set in the motion track of the ...	11/24/1981
4268147	Focal plane shutter device A focal plane shutter device of the present invention is provided with leading blade braking means arranged near the terminal end of running down movement of the leading blades of the focal plane shutter to stop said leading blades in a standstill positio...	05/19/1981
4245905	Blade actuating device for focal plane shutters A focal plane shutter comprising a front blade operating arm, a front blade driving arm, a single front blade driving spring stretched between both of these arms, a rear blade operating arm, a rear blade driving arm and a single rear blade driving spring ...	01/20/1981
4231650	Blade type focal plane shutter A blade type focal plane shutter wherein an auxiliary arm is always biased with a spring so that backlashes at pivotably connecting points between a driving arm and shutter blades and between the auxiliary arm and shutter blades may not have a bad influen...	11/04/1980
4204762	Centrifugal brakes for focal plane shutters In a focal plane shutter having two curtains which unwind from shafts after being released, the shaft controls a master gear, causing a keying pin on the latter to activate braking action on the curtain at a time interval near the terminal end of running-...	05/27/1980
4201459	Braking device for focal plane shutter A braking device for focal plane shutter in a photographic camera, in which the braking device has a braking function in its reciprocating motion. The braking device is moved forward by a shutter opening member near the end of aperture opening by the shut...	05/06/1980
4110772	Camera shutter having bound prevention device A camera shutter has a set of shutter blades movable from an initial closed position in which the blades close an exposure aperture to an open position opening the exposure aperture and then to a final closed position again closing the exposure aperture. ...	08/29/1978
4110773	Brake system for focal plane shutters of photographic cameras A focal plane shutter for a photographic camera has a brake system for braking the movement of shutter elements just before they reach their end or stop positions. At least one first brake element has a nearly constant braking torque, and at least one sec...	08/29/1978
4109266	Braking mechanism for focal plane shutters A braking mechanism for focal plane shutters provided with a brake operating member pivoted in the tip portion of a shutter blade actuating member so as not to be freely movable and capable of taking an operating position and a non-operating position, a b...	08/22/1978

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Class 396/456 - Of focal plane shutter