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| Number | Title | Issue Date |
| 7156565 | Driver for opening and closing dual-blade shutter adapted to be reset without re-opening shutter In a camera, a dual-blade shutter has a pair of shutter blades supported for opening and closing movement to uncover and re-cover an exposure aperture, and a shutter driver that projects into respective overlapping slots in the shutter blades and is supported for sh... | 01/02/2007 |
| 6953074 | Antibandit shutter An antibandit shutter includes a closed frame made up of a lower housing, an upper head and two side mullions defining a space which can be opened or closed. The opening or closing is effected by a plurality of elongate slats adapted to move from a retracted positio... | 10/11/2005 |
| 6903777 | Lens shutter for digital still cameras A lens shutter has a diaphragm blade, a shutter blade, and a motor with a rotor reciprocatingly turned between an initial position and a final position by a current applied to a coil, to move the diaphragm blade to stop at an aperture regulating position and the shu... | 06/07/2005 |
| 6536962 | Focal-plane shutter for digital still cameras A focal-plane shutter for digital still cameras includes a first blade covering an exposure aperture only immediately before an exposure operation is performed; a driving member for the first blade having an iron piece member, actuated in an exposure oper... | 03/25/2003 |
| 6443635 | Electromagnetic actuator with auto-retaining of rotor at triple positions In an electromagnetic actuator, a rotor composed of a permanent magnet is mounted rotatably in two directions between a first end position and a second end position via an intermediate position. A coil is wound around the rotor to rotate the rotor in an e... | 09/03/2002 |
| 6394668 | Shutter for camera A shutter for a camera has a sector driven by a movable board having plural spiral-shaped coil patterns concentrically arranged thereon for generating a repulsive or attractive magnetic field with respect to fixed permanent magnets or coils confronting th... | 05/28/2002 |
| 6382848 | Shutter for camera A shutter for a camera having a small size is driven by coil patterns formed in a spiral shape on at least one of a fixed printed board and a movable printed board. On faces of a shutter base plate and a sector ring opposed to each other, a cam mechanism ... | 05/07/2002 |
| 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 |
| 5915141 | Shutter device having eccentric pin for adjusting urging force A shutter device includes a base member, a plurality of shutter blades supported by the base member and each arranged to turn in opposite directions, a shutter blade driving lever having an engaging part which engages the plurality of shutter blades and a... | 06/22/1999 |
| 5842070 | Adjustable light shutter for hand held electro-optical scanners A shutter for use in an electro-optical scanning device having an aperture and a CCD imager is provided. The shutter comprises a light barrier movable between a first position blocking light from passing through the aperture and a second position enabling... | 11/24/1998 |
| 5828920 | Translational electromagnetic camera shutter for variable aperture applications A shutter is disclosed having a shutter blade frame comprised of two spaced apart rails, each rail incorporating at least one magnet section. Individual pairs of electromagnets are positioned for movement along the rails. At least one shutter blade, havin... | 10/27/1998 |
| 5606387 | Electromagnetic camera shutter with a conductive strip on the blade and a permanent magnet aperture An improved electromagnetic camera shutter incorporating an electrically conductive shutter blade having a hole there through that is connected in series to a pair of electrically conductive springs to urge the shutter blade into a first or a second posit... | 02/25/1997 |
| 5508772 | Electromagnetic device for a camera An armature lever is attached by an elastic adhesive to a catch located on an end of an armature shaft of an electromagnetic device of a camera, which is used to drive, for example, a shutter, stop, and/or mirror(s) of the camera. The armature lever and t... | 04/16/1996 |
| 5420660 | Motor driven shutter activated by single motor having controllable clockwise and counterclockwise rotations A motor driven shutter is activated by a single motor whose clockwise and counterclockwise rotations may be controlled. The motor driven shutter includes a driving member whose clockwise and counterclockwise rotations are controlled by the motor and havin... | 05/30/1995 |
| 5045873 | Motor driven shutter A mechanism for opening and closing a shutter includes a rotatably mounted drive member, a motor operable to rotatably drive the drive member, an actuator for opening and closing the shutter when the drive member is rotated, and an operating arrangement b... | 09/03/1991 |
| 4933695 | Method of driving a motor-driven shutter for a camera A method of driving a motor-driven shutter for a camera having a sector opening lever which is pivotal to open and close sectors, a sector opening cam movably supported and engageable with an engagement pin provided on the sector opening lever, an actuati... | 06/12/1990 |
| 4760420 | Shutter mechanism for a camera A shutter mechanism for a camera comprises overlapping plates which are pivotally mounted and connected by a pin sliding in slots so that the plates move in unison. Springs bias the plates to an overlapping position, covering a hole in the camera body whi... | 07/26/1988 |
| 4561744 | Electromagnetically operated leaf shutter The invention relates to an electromagnetically operated leaf shutter particularly for use in photographic cameras installed in microscopes in which a rotatable annular armature including a light passage is provided with an even number of poles radially e... | 12/31/1985 |
| 4452521 | Camera having an electromagnetically driven shutter A camera having a driving member to open and close shutter blades is operated to open a shutter by a force of a spring at a movement speed independently of that of a movable member at a time power is supplied to an electromagnetic driving source, the mova... | 06/05/1984 |
| 4286856 | Electromagnetic shutter for lens An electromagnetic shutter for a photographic lens is disclosed. The shutter comprises an optical stop mounted between focusing elements with a flap mounted for rotating substantially along one side of said stop. The flap has a first position in which it ... | 09/01/1981 |
| 4268153 | Electromagnetically driven shutter A slit exposure shutter which has an electromagnetic drive source and is arranged to have shutter blades moved by rotation of a rotor not exceeding a half turn to perform exposure effecting and returning travels. The weight of the shutter blades and that ... | 05/19/1981 |
