Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7857529 | Shutter device Provided is a shutter device including a coil layer that includes one or more substrates having a through-hole formed in the center thereof and a coil installed thereon, the coil generating a magnetic field when a current is applied; and a shutter layer that is inst... | 12/28/2010 |
| 7771132 | Shutter unit, shutter unit with built-in lens, and imaging apparatus A shutter unit is equipped with a base plate, a yoke, a coil that is attached in the middle of the yoke to excite the yoke, and a rotor that rotates in a predetermined direction by excitation of the yoke. A lens frame is formed on the base plate. The yoke has a subs... | 08/10/2010 |
| 7367722 | Front and rear curtain shutter device with start area A shutter device includes a stationary plate having a plurality of driving electrodes movable element opposes the stationary plate and including a sheet subjected to an electret-forming process. A drive control unit for moving the movable element using variation in ... | 05/06/2008 |
| 7287864 | Light amount adjusting device and projector using the same A light amount adjusting device is assembled in a projector having a light source and a projection device projecting light from the light source on a screen through an image forming panel. The light amount adjusting device is arranged in the projection device or bet... | 10/30/2007 |
| 7242123 | Actuator, light quantity adjusting apparatus, and stepping motor An actuator maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes a magnet which is formed in a ring shape, in which at least one surface perpendicular to a ce... | 07/10/2007 |
| 7182530 | Electrode shutter device with start area A shutter device includes a stationary plate having a plurality of driving electrodes movable element opposes the stationary plate and including a sheet subjected to an electret-forming process. A drive control unit for moving the movable element using variation in ... | 02/27/2007 |
| 7071591 | Electromagnetic circuit and servo mechanism for articulated cameras An electromagnetic circuit that may be advantageously employed in an articulated camera, such as a CCTV camera, as a part of a servo mechanism to directly drive the camera and optical lens assembly, for example, in the pan and/or tilt axes. In one embodiment, the co... | 07/04/2006 |
| 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 |
| 6800970 | Motor and optical apparatus using the same A motor includes a cylindrical magnet, first outer magnetic pole portions which are formed by gapping part of a cylinder from the distal end in the axial direction of the motor, and which oppose the outer circumferential surface of the magnet, second outer magnetic ... | 10/05/2004 |
| 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 |
| 6033131 | Hybrid silicon-based micro-electromagnetic light shutter A hybrid, micro-electromagnetic light shutter includes a silicon body having a top surface with an arcuate groove formed on the top surface. A recess and a light aperture are formed in the top surface of the silicon body proximate to the arcuate groove. A... | 03/07/2000 |
| 5881449 | Method of making a microceramic electromagnetic light shutter A method of making a microceramic electromagnetic light shutter, includes forming a micromolded bottom ceramic portion in the green state with a sacrificial fiber having a first and second end portion and being shaped in the form of a coil, mounted on its... | 03/16/1999 |
| 5708893 | Microceramic electromagnetic light shutter A microceramic electromagnetic light shutter is disclosed including a unitary ceramic body having an internal cavity. A conductive coil is formed in the internal cavity. The unitary ceramic body defines a first and second bearing structure on it's surface... | 01/13/1998 |
| 4724452 | Shutter A shutter is disclosed for use as a high-speed shutter in a camera or an electronic device. The shutter comprises a planar aperture blade which is mounted for reciprocative movement. The aperture blade includes a coil which is part of an electromagnetic a... | 02/09/1988 |
| 4671638 | Moving coil electromagnetic actuator and shutter employing same In an electromagnetic actuator of the type having a planar coil armature mounted for movement in a magnetic field by a plurality of planar flexure springs, the flexure springs lie entirely in the plane of the planar armature.... | 06/09/1987 |
| 4650307 | Electromagnetic actuator An electromagnetic actuator operable with a source of electric current has two overlapping, oppositely movable armatures that are mounted on resiliently flexible cantilever spring members and coupled together by resiliently flexible spring elements, to pr... | 03/17/1987 |
| 4623233 | Electromagnetically driven shutter device An electromagnetically driven shutter device in which a first coil drives shutter blades to control an aperture and shutter time. A second coil controls the moving distance, that is maximum aperture, of the first coil by being located at a plurality of po... | 11/18/1986 |
| 4621916 | Magnetic positioning and contouring of a blade mechanism There is disclosed an arrangement for magnetically maintaining a magnetically permeable and flexible blade mechanism of a photographic apparatus in a preselected orientation with respect to itself and a lens element despite movement of the blade mechanism... | 11/11/1986 |
| 4558937 | Electromagnetic blade mechanism There is disclosed an improved electromagnetic actuator for use in shutter applications. Included in the actuator is a magnetic arrangement for minimizing the effects of forces on the actuator armature which would adversely affect armature performance.... | 12/17/1985 |
| 4558938 | Twin rotatable electromagnetically driven blade mechanism There is disclosed an extremely thin electromagnetic rotatable shutter arrangement wherein a stationary magnetic arrangement is intermediate spaced apart portions of armature blades.... | 12/17/1985 |
| 4531820 | Electromagnetic actuator generating equal and opposing force vectors An electromagnetic actuator is disclosed which develops generally equal and opposing force vectors acting on an armature. This is done by constructing and arranging a permanent magnet assembly, the armature and a conductor assembly to achieve the foregoin... | 07/30/1985 |
| 4514064 | Electromagnetic shutter The electromagnetic shutter consists of a plurality of shutter sectors made of plastic material, printed electric coils operatively coupled with the shutter sectors, and permanent magnets fixed to the shutter at positions where the permanent magnets coope... | 04/30/1985 |
| 4497557 | Electromagnetic shutter mechanism A compact shutter mechanism is disclosed for controlling the unblocking and blocking of a light admitting opening through which light passes along a given path. Included in the mechanism is a plurality of a first group of shutter blade assemblies, as well... | 02/05/1985 |
| 4487493 | Electromagnetically driven shutter An electromagnetically driven shutter includes combined diaphragm-shutter blades, the opening and closing of which is controlled by a swingable coil arranged in magnetic fields to travel forwards and backwards. The turns of the coil are made eccentric in ... | 12/11/1984 |
| 4415252 | Electromagnetically operated shutter An electromagnetically operated shutter includes a conductive member which has a number of radial components from the center of rotation of a sector ring, and is arranged on a plane parallel with the sector ring. The conductive member is secured to the se... | 11/15/1983 |
| 4413895 | Electromagnetic actuator having a compliant armature An electromagnetic actuator of the type having an armature positioned for movement in a magnetic gap is characterized by the armature being sufficiently compliant so as to allow the armature to contact the sides of the gap, and easily conform to the shape... | 11/08/1983 |
| 4349264 | Electromagnetically driven shutter In an electromagnetically driven shutter of the type having a shutter driving rotor arranged to rotate on the optical axis of a photograph-taking lens, the shutter driving rotor is provided with a circular opening and is formed into an approximately rhomb... | 09/14/1982 |
| 4348094 | Rotor of electromagnetically driven device for exposure control Disclosed is an electromagnetically driven device for a camera so designed that an exposure control blade opening and closing sector ring, serving as rotor on the base plate of which sector ring conductor coil patterns are arranged, is arranged in a magne... | 09/07/1982 |
| 4324471 | Electromagnetic drive device for camera An electromagnetic drive device is described for use in a camera to electromagnetically drive the diaphragm or shutter blades. A conductive coil pattern is positioned on the opposite sides of a rotor for the shutter drive. The shutter blades, which are dr... | 04/13/1982 |
| 4319822 | Electromagnetically operated shutter An electromagnetically operated shutter device includes a magnetic body and permanent magnets which form a magnetic circuit in the magnetic body. A positioning member for seating the magnets within the body is made of a non-metallic material, and is forme... | 03/16/1982 |
| 4079400 | Optical blade drive apparatus An optical blade drive apparatus for use in an optical instrument includes a linear motor system which electromagnetically actuates a blade ring for rotation at a high speed. The linear motor system comprises permanent magnets arranged to provide a center... | 03/14/1978 |
| 4051499 | Linear motor-driven focal plane shutter A leading blind and a trailing blind are made of opaque plastic sheet material. Each blind has a thin permanent magnet sealed within it along a plane approximately bisecting its thickness. Along the path of each blind is arranged at least one series of el... | 09/27/1977 |
| 4024552 | Electromagnetically driven optical blade A thin electromagnetic coil sheet is sealed in a plastic blade. The coil sheet is composed of a plastic film substrate and a photo-etched coil deposited thereon. The coil sheet is sealed in the plastic blade at the middle of the thickness thereof.... | 05/17/1977 |
| 3987473 | Electromagnetic focal plane shutter A leading blind and a trailing blind are made of rigid material such as metal sheet and each is provided with at least one permanent magnet. Along the path of the blinds are arranged electromagnetic coils. Each magnet mounted on the blind has a brush whic... | 10/19/1976 |
