With Vibrating Reed Or Spring Bar-type Armature Patents (Class 335/235)
  • Patent number: 10462577
    Abstract: A ported cavity tweeter includes a face plate having top and bottom surfaces, a diaphragm frame secured to the bottom surface of the face plate, and a central aperture passing through both the face plate and the diaphragm frame. In addition, the ported cavity tweeter includes a dome-shaped diaphragm positioned within the central aperture and having a periphery thereof secured to the diaphragm frame. A voice coil is wrapped on a voice coil former and mounted to the dome-shaped diaphragm. The ported cavity tweeter also includes a magnetic assembly having the diaphragm frame mounted thereon, and at least one acoustic duct extending through the face plate and diaphragm frame. The ported cavity tweeter is configured as a Helmholtz resonator to increase the output level over a range of frequencies.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: October 29, 2019
    Inventor: Alexander B. Ralph
  • Patent number: 8981885
    Abstract: The invention relates to an electromagnetic actuator comprising a wire coil, an armature and a catch, wherein the armature can be moved in an actuation direction, and wherein the catch secures the armature within the electromagnetic actuator. In order to secure an armature of the electromagnetic actuator, extra parts are mounted to the electromagnetic actuator or the armature is attached via a spring. This results in bigger sizes or insufficient stopping characteristics. The present invention overcomes these disadvantages by locating a catch inside the electromagnetic actuator.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: March 17, 2015
    Assignee: Tyco Electronics Belgium EC BVBA
    Inventors: Tom Ocket, Guus Mertens, Geert De Boever, Peter Devos, Jan Van Cauwenberge
  • Patent number: 8682396
    Abstract: Disclosed is a vibration module for a portable terminal that includes a housing, a magnetic moving part movable in a first direction within the housing; an elastic member supported between the opposite ends of the magnetic moving part and inner walls of the housing, and a solenoid coil provided in the housing. The vibration module is positioned at one end of the moving section by the magnetic force of the magnetic moving part and an object around the magnetic moving part, allowing the vibration module to provide a user with a feeling similar to a click feeling via the acceleration produced at a stopping instant. In addition, when vibrating, the vibration module generates sufficient vibration power through acceleration at the instant of changing moving direction at the ends of the moving section, to provide an alarm function, such as an incoming call notification.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 25, 2014
    Assignees: Samsung Electronics Co., Ltd, Korea Advanced Institute of Science and Technology
    Inventors: Tae-Heon Yang, Yu-Dong Bae, Dong-Soo Kwon, Young-Min Lee, Eun-Hwa Lee, Jeong-Seok Lee, Dong-Bum Pyo, Young-Jun Cho
  • Patent number: 8336325
    Abstract: The invention relates to an ice dispenser (10) for a refrigerator that includes a flap unit (24) which is arranged in an ice dispenser shaft and which can be adjusted between a release position which releases the ice dispenser shaft for dispensing ice and a locking position which blocks the ice dispenser shaft against dispensing ice, a pulse-controlled actuating magnet arrangement (58) for actuating the flap unit (24), and mechanical retention means (36, 64, 66) which releasably retain the flap unit (24) in the release position and in the locking position thereof, respectively.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: December 25, 2012
    Assignee: emz-Hanauer GmbH & Co. KGaA
    Inventors: Albert Dirnberger, Georg Spiessl
  • Patent number: 8207806
    Abstract: According to one embodiment, magnetization directions of a magnetic free layer and a magnetic pinned layer are parallel to junction planes between the magnetic free layer and a spacer layer and between the magnetic pinned layer and the spacer layer. The magnetic free layer has a uniaxial magnetic anisotropy, and generates a magnetization oscillation when a current larger than an oscillation threshold current flows through the magnetic free layer. A magnetic field generator controls a magnitude and a direction of an external magnetic field to cancel a shift amount of an oscillation frequency caused by a diamagnetic field due to the magnetization oscillation and a shift amount of the oscillation frequency caused by a magnetic field due to the uniaxial magnetic anisotropy.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: June 26, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kiwamu Kudo, Koichi Mizushima, Tazumi Nagasawa, Rie Sato
  • Patent number: 8174345
    Abstract: A vibration generator 1 has an attachment structure of a spring by which the attachment error of the spring elastically supporting a mover composed of a magnet and a yoke does not become the error of the span of the spring to make it possible to improve the ease and yield of manufacture. The vibration generator 1 includes a mover which is composed of a magnet 5 and yokes 4, 7a and 7b, and a spring 6 which is composed of an integrally molded article made of an elastomeric material and elastically supports the mover to allow the mover to vibrate in the central axis direction C. The spring is arranged on the outside of a coil 3 in a radial direction thereof and extends along the radial direction.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 8, 2012
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Masaharu Kagami, Kazutaka Sakaguchi, Yuki Takahashi, Shigenori Inamoto
  • Patent number: 8089050
    Abstract: A ribbon-shaped ion beam is modified using multiple coil structures on a pair of opposed ferromagnetic bars. The coil structures comprise continuous windings which have predetermined variations along the length of the bar of turns per unit length. In an example, one coil structure may have uniform turns per unit length along the bar, so that energizing the coil structures forms a magnetic field component extending across the gap between the bars with a quadrupole intensity distribution. A second coil structure may have turns per unit length varying to produce a hexapole magnetic field intensity distribution. Further coil structures may be provided to produce octopole and decapole magnetic field distributions. The coil structures may be energized to produce magnetic fields parallel to the bars which vary along the length of the bars, to twist or flatten the ribbon-shaped beam.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: January 3, 2012
    Assignee: Twin Creeks Technologies, Inc.
    Inventors: Kenneth Harry Purser, William H. Park
  • Publication number: 20080252403
    Abstract: The invention relates to an actuator comprising a leaf spring attached to a carrier in at least one point of attachment, means for providing a magnetic field and means for guiding the magnetic field so as to provide a magnetic flux loop. A movable part of the leaf spring is movable relative to the means for providing the magnetic field. The actuator further comprises a drive core attached to the movable part of the leaf spring, which is incorporated in the flux loop, for imparting the relative movement to the movable part. The drive core is so positioned that the magnetic properties of the flux loop are changed under the influence of said relative movement for gearing the magnetic force on the drive core and the spring force of the leaf spring to each other.
    Type: Application
    Filed: July 12, 2006
    Publication date: October 16, 2008
    Inventors: Roger Franciscus Mattheus Maria Hamelinck, Petrus Carolus Johannes Nicolaas Rosielle
  • Patent number: 7116017
    Abstract: Disclosed is a device for reducing deterioration of image quality which can get rid of speckle by equalizing a laser from a light source on a screen by vibrating a reflective mirror installed between the light source and the screen at a predetermined amplitude. The device for reducing deterioration of image quality in a display system using a laser as a light source includes: a reflective mirror formed at the path of light positioned between the light source and a screen, for reflecting the laser; and a driving unit connected to the reflective mirror and vibrating the reflective mirror at a predetermined amplitude by using an electromagnetic force.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: October 3, 2006
    Assignee: LG Electronics Inc.
    Inventors: Chang-Hyeon Ji, Young-Joo Yee, Jeong-Hoon Choi, Seong-Hyok Kim
  • Patent number: 7089894
    Abstract: A lever electromechanical valve actuator assembly and arrangement of electromechanical valve actuators that creates a compact actuator assembly to increase ease of serviceability, provide space for engine components and eliminate interference between the actuators and components in the vehicle engine compartment.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: August 15, 2006
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Mark L. Hopper, John D. Norton, Shawn H. Swales
  • Patent number: 6807432
    Abstract: A wireless transmission network card frame kit assembly consists of: a lower frame for housing electric circuits or other necessary elements including a first section which is wedged in a computer socket when the network card is inserted in the computer socket, and a second section for housing wireless receiving or emitting modules being exposed outside the computer when the network card is inserted in the computer socket to facilitate wireless transmission; an upper frame having an assembly section located above the second section when assembled and faced the first section; an upper cap covering the first section of the lower frame and having an overlap section to overlap over the assembly section; and a lower cap to encase the bottom side of the first section of the lower frame and the overlap section of the upper frame, and engage tightly with the upper cap at indented grooves of the upper cap.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: October 19, 2004
    Inventor: Hong-Wen Hwang
  • Patent number: 6727789
    Abstract: The armature of an electromagnetic transducer, extending through the polarizing flux between opposing permanent magnet pole faces, is snubbed to limit its shock-induced excursions normal to the directions of its extent and of the flux field. Such snubbing helps to protect the armature from plastic damage and accompanying shift of magnetic balance of the transducer upon the occurrence of a strong mechanical shock in an arbitrary direction.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: April 27, 2004
    Assignee: Tibbetts Industries, Inc.
    Inventors: George C. Tibbetts, John L. Burns, Joseph A. Sawyer
  • Patent number: 6249198
    Abstract: A magnetic actuator for reciprocating motion of a compressor diaphragm, piston or the like. The actuator comprises a stator with stator poles, excitation windings, and a backing plate. Non-magnetic support arms carry arced magnet poles and actuate a pair of compressed diaphragms. With the introduction of coil current, magnet poles are attracted to the central stator poles and repulsed by outer poles. A torque about pivot results and hence movement of arms with consequential actuation of the diaphragms. Performance is improved by increasing the flux produced by the electromagnet, thereby reducing flux leakage and fringing.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: June 19, 2001
    Assignee: Huntleigh Technology PLC
    Inventors: Richard Edward Clark, Stephen John Cook
  • Patent number: 5896076
    Abstract: An electromagnetic active vibration actuator configuration combines two modes of operation to obtain the advantages of long stroke and linearity of voice coil type actuators and high efficiency of dual-gap solenoid type actuators. A coaxial stator shell surrounds an axially vibratable armature. Either the stator or the armature can carry one or more coils and/or permanent magnets, however usually the magnets are located on the armature for their contribution to vibrating mass. Alternate coils and alternate magnets are made opposite in polarity, the stator armature pole pieces being held symmetrically staggered relative to the stator pole pieces by end springs or flexures that allow axial vibration when AC is applied to the coils.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: April 20, 1999
    Inventor: Frederik T. van Namen
  • Patent number: 5608176
    Abstract: An electromagnetic valve for a pipe organ is located and operated so that the valve closure member opens and closes the windway to the pipe at an obtuse angle thereby slowing down the opening of the windway to prevent or minimize overblowing and eliminating or minimizing rebounding of the closure member when it closes the windway to minimize or eliminate unwanted continued speech by the pipe.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 4, 1997
    Inventor: Timothy J. Patterson
  • Patent number: 4518831
    Abstract: An electromechanical magnetic transducer with a moving armature having (1) substantially pure translational adjustability, or (2) adjustability characterized by a substantially definite pre-chosen ratio of rotation to translation. The armature comprises an armature leg and an armature support yoke having plastically deformable yoke arms. A yoke arm comprises a pair of struts that are mutually inclined to provide a toggle-like action upon application of an adjusting force, such action opposing or enhancing the tendency of the support of the armature leg to rotate.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: May 21, 1985
    Assignee: Tibbetts Industries, Inc.
    Inventors: W. Kent Stanley, George C. Tibbetts
  • Patent number: 4443667
    Abstract: An electromagnetic transducer is disclosed that includes a pole assembly (110) comprising a central pole piece (112) upstanding from a back plate (114). A coil assembly (120) is disposed about the central pole piece (112) and rests on the back plate (114). In addition, an inverted cup-shaped permanent magnet (130) having a central opening (132) in its base (131) is positioned so that the wall (134) of the magnet circumscribes the coil assembly (120) and rests on the back plate (114). The rim of the central opening (132) in the base (131) of the permanent magnet (130) is spaced from and encircles the upper end of the central pole piece (112). Also the wall (134) of the permanent magnet (130) is of a height that the upper surface of the base (131) lies in essentially the same plane as the upper surface of the pole piece (112). A central armature (222) is supported by a nonmagnetic diaphragm (221) so as to be positioned above and spaced from the central pole piece (112).
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: April 17, 1984
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Richard M. Hunt
  • Patent number: 4124837
    Abstract: Capacitor fuses differ from fuses intended for other purposes by the nature of their terminal elements. Their terminal elements must be adapted to be gripped by wrenches and hence be hexagonal in cross-section. Disclosed is a capacitor fuse having hexagonal elements press-fitted upon the ferrules of a fuse, the length of ferrule-receiving cavities in said hexagonal elements being substantially equal to the length of the ferrules of the fuse. One of the hexagonal elements is provided with an internally screw-threaded bore and the other of said hexagonal elements is provided with an externally screw-threaded projection extending in a direction away from said casing of the fuse.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: November 7, 1978
    Assignee: Gould Inc.
    Inventor: Robert J. Panaro