Fluid Or Magnetic Brake Or Operator Patents (Class 242/422.2)
  • Patent number: 8998122
    Abstract: The disclosure relates to a winder for winding film trims for packaging machines. The winder comprises a drive, a winding mandrel and at least two winding rolls. The disclosure is characterized by an adjustment device for adjusting a torque threshold above which slip occurs between the respective winding rolls and the winding mandrel and/or between the individual winding rolls.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: April 7, 2015
    Assignee: Multivac Sepp Haggenmueller GmbH & Co. KG
    Inventors: Klaus Weiss, Elmar Ehrmann, Guenther Braeckl
  • Patent number: 8960585
    Abstract: A transmitting gear is mounted on a rotating shaft of a spool so as to be rotatable integrally with the rotating shaft. A rotation sensor is disposed eccentrically with respect to the rotating shaft in a radial direction of the rotating shaft. The rotation sensor is disposed in a direction in which the rotating shaft is separated from the rotation sensor by a large load applied from a seatbelt to the spool in an emergency. The rotation sensor includes annularly arranged magnets and a magnet holding member that holds the magnets. The magnet holding member includes a receiving gear External teeth of the receiving gear engage with external teeth of the transmitting gear to increase a speed of rotation of the spool whose rotation is transmitted to the receiving gear.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: February 24, 2015
    Assignee: Takata Corporation
    Inventors: Kenji Ikeda, Tomofumi Nakagawa
  • Patent number: 8662437
    Abstract: When current collecting wires are laid in parallel with each other on a solar cell on which a photosensitive film is formed, a wire tension adjusting mechanism is provided which includes a bobbin holder shaft pivotally held on the side of a frame in a bobbin cassette in a wiring apparatus and a wire bobbin is detachably fixed on the bobbin holder shaft. The wire tension adjusting mechanism further includes a pre-load means for adjusting the torque of the bobbin holder shaft and the tension of each current collecting wire to be drawn out from the wire bobbin held by the bobbin shaft is adjusted.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: March 4, 2014
    Assignee: Tohoku Seiki Industries, Ltd.
    Inventors: Keitaro Harada, Masayoshi Yokoo, Koichi Yoshida, Akio Murakami
  • Patent number: 8556204
    Abstract: A curtain control device has a stroke setting device and a damper respectively assembled at both ends of a curtain spindle rod. A torsion element is further assembled on the curtain spindle rod. A curtain spindle sleeve is invaginated on the outside of the curtain spindle rod, the stroke setting device and the damper. The curtain spindle sleeve is assembled with the combination of the curtain spindle rod and the damper, and then a curtain fabric is assembled on the outside of the curtain spindle sleeve. In this manner, the opening range of the curtain fabric roll is controlled by the stoke setting device, and the roll-up speed of each part of the curtain fabric is slowed down by the damper so as to reduce effectively the noise produced by the quick actuation of each part and the defective rate.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: October 15, 2013
    Assignee: Uni-Soleil Ent. Co., Ltd.
    Inventor: Yu-Ting Kao
  • Patent number: 8528850
    Abstract: A braking device for a rope pulley of a mechanically retractable and extendable leash for walking animals is provided. The rope pulley is supported in a housing such that it is rotatable in an unwinding direction against the force of a spring and in a wind-up direction under the influence of the spring force and cooperates with a brake button of the braking device in order to stop rotation of the rope pulley. The rope pulley is connected to a brake disk that is rotatable relative to the rope pulley against a damping force and that can be locked to the housing.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: September 10, 2013
    Assignee: Flexi-Bogdahn Technik GmbH & Co. KG
    Inventor: Manfred Bogdahn
  • Patent number: 8466648
    Abstract: A motor control device for a stepping motor including at least two phase coils and a rotor is provided. The motor control device includes a control unit which applies a pulse voltage subjected to pulse width modulation, to each of the at least two phase coils, a back electromotive voltage measuring unit which provides a halt period to temporarily halt the application of the pulse voltage to one of the phase coils when a direction of the coil current flowing in the one phase coil is switched, and which measures a back electromotive voltage induced in the one phase coil during the halt period, an out-of-step detecting unit which detects an out-of-step of the stepping motor if the measured back electromotive voltage satisfies a predetermined criterion, and a voltage control unit which sets a voltage for all phase coils other than the one phase coil to a constant voltage during the halt period.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: June 18, 2013
    Assignee: Minebea Co., Ltd.
    Inventors: Kazuo Takada, Takayuki Matsui
  • Patent number: 8146852
    Abstract: A rotation damper, particularly for damping the rotary movement of a belt retractor shaft of a vehicle safety belt, has a housing which delimits a working space filled with a damping medium, and an element which is rotatable relative to the housing. Several pins serving as resistance elements, which extend into the working space, are provided on the element.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: April 3, 2012
    Assignee: TRW Automotive GmbH
    Inventors: Joachim Biller, Oliver Gross, Bernd Gentner
  • Patent number: 8141808
    Abstract: A retractor including a spindle for winding a seat belt; a frame for rotatably supporting the spindle; a winding spring for biasing the rotation of the spindle in the direction of winding the seat belt; and a magnetic disc and a magnet sensor unit for detecting the rotation of the spindle. The magnetic disc and the magnet sensor unit are disposed between the frame and the winding spring, and are each made of a magnetic material. Hence, the seat belt device can be less affected by a disturbance magnetic field and can detect the rotation of the spindle at high reliability.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 27, 2012
    Assignee: Autoliv Development AB
    Inventors: Eiji Maemura, Susumu Nakajima
  • Patent number: 8011611
    Abstract: In a recording medium transporting mechanism, a flange member is attached on either side of a roll paper and the flange member has a diameter smaller than a maximum outer diameter of a roll paper. Support rollers support a corresponding one of the flange members in a rotatable manner. The support rollers are moveable along the axis of rotation of the roll paper. The sum of an outer diameter of corresponding one of the flange members and the support rollers is greater than a maximum outer diameter of the roll paper. A rewinding roller of at least a length equivalent to a distance between both sets of support rollers when the sets of support rollers are farthest apart is engaged with a support roller within the set of support rollers and can rotate the flange member in a rewinding direction over a desired amount of continuous time.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: September 6, 2011
    Assignee: Ricoh Company, Limited
    Inventors: Akito Yoshimaru, Yuichiro Maeyama, Yoshio Miyamoto
  • Publication number: 20110198431
    Abstract: The method of improving the brake closing response time on an offshore reel, comprising providing a brake disk, providing a control valve with a pilot on each end, providing a reference signal on one end, providing a control signal on the other end, shifting to a position to supply operating pressure to release brakes from a brake disk when said control signal exceeds said reference signal and venting said operating signal when said control signal is less than said reference signal.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 18, 2011
    Inventor: Benton F. Baugh
  • Patent number: 7967234
    Abstract: The method of preventing over tension to an umbilical wrapped on the spool of an offshore reel when the umbilical is being normally deployed or retrieved or when the umbilical is unexpectedly pulled from the spool on the reel, comprising providing a main disk, mounting the main disk on the spool of the reel with a slip connection which will be automatically controlled, connecting motor power for the reel to the main disk, connecting brakes to the main disk, such that when the diameter of deployment varies the slip connection torque will be automatically adjusted and prevent the umbilical from being subjected to tension higher than the desired amount.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: June 28, 2011
    Inventor: Benton F. Baugh
  • Patent number: 7360736
    Abstract: A monodirectional braking mechanism for use with a device for extending and retracting a sheet of material on a roller, the braking mechanism comprising one or more than one housing, one or more than one rotor within the housing, a brake controller connected to the rotor, and an eccentric brake operatively coupled with the brake controller, where the braking mechanism reduces the force or rate, or both the force and rate, of rotation of the roller as the roller is rotated in a second rotation direction but has substantially no effect on the force or rate of rotation of the roller when the roller is rotated in a first rotation direction, and where the first rotation direction is the reverse of the second rotation direction.
    Type: Grant
    Filed: July 14, 2004
    Date of Patent: April 22, 2008
    Assignee: Gianus S.p.A.
    Inventor: Marco Zangirolami
  • Patent number: 7281677
    Abstract: A take-up roll forming apparatus for flexible strip material comprises a motor-driven shaft journaled for rotation on a frame where the shaft extends through a circular plate that is affixed to the shaft. A plurality of magnets is affixed to the plate in a predetermined pattern. A reel having a tubular core is adapted to slip over the motor-driven shaft and the reel also includes a circular end plate having magnets affixed thereto such that when the motor-driven shaft rotates, it tends to carry the reel with it due to the magnetic forces attracting the magnets on the motor-driven plate to the magnets on the end plate of the reel.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: October 16, 2007
    Assignee: National Carpet Equipment, Inc.
    Inventor: Martin L. Anderson
  • Patent number: 7246766
    Abstract: A torque limiter includes a first rotatable body rotatable around a rotation shaft as a center of rotation; and a second rotatable body rotatable around the rotation shaft as a center of rotation. The first rotatable body includes one of a magnet and a hysteresis plate. The second rotatable body includes the other of the magnet and the hysteresis plate. The magnet and the hysteresis plate face each other. The first rotatable body and the second rotatable body are in contact with each other. No wall is provided between the rotation shaft and a contact area at which the first rotatable body and the second rotatable body are in contact with each other.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: July 24, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuo Shibukawa, Koichiro Hirabayashi
  • Publication number: 20040211855
    Abstract: A torque limiter includes a first rotatable body rotatable around a rotation shaft as a center of rotation; and a second rotatable body rotatable around the rotation shaft as a center of rotation. The first rotatable body includes one of a magnet and a hysteresis plate. The second rotatable body includes the other of the magnet and the hysteresis plate. The magnet and the hysteresis plate face each other. The first rotatable body and the second rotatable body are in contact with each other. No wall is provided between the rotation shaft and a contact area at which the first rotatable body and the second rotatable body are in contact with each other.
    Type: Application
    Filed: March 30, 2004
    Publication date: October 28, 2004
    Inventors: Kazuo Shibukawa, Koichiro Hirabayashi
  • Publication number: 20040178292
    Abstract: A method of controlling draw tension on thread wrapped around a bobbin that is mounted operatively on a case for movement relative to the case around an axis. The method includes the steps of: predetermining a desired thread draw tension to be achieved with the bobbin operatively mounted on a case using a predetermined mounting process; and, before operatively mounting the bobbin on the case, selectively controlling the at least one parameter of at least one of the thread and bobbin in a correlative manner to the desired thread draw tension with the bobbin operatively mounted on a case using the predetermined mounting process.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 16, 2004
    Inventor: Ronald Kronenberger
  • Publication number: 20040000608
    Abstract: A mechanism (C) for tensioning a web extending from a rotating roll (R) includes three fluid relays (200-202) and two amplifiers (204, 205). A variable pressure pilot signal (P) drives a piston (66) of a rotational control apparatus (A) to create a pilot torque to the rotating roll (R). In the event that the variable pressure pilot signal (P) exceeds the bias pressures (B1-B3) of the fluid relays (200-202), the pistons (64, 68, 70, 72 and 74) are driven by fluid relays (200-202) to create relay torques to the rotating roll (R) in addition to the pilot torque in direct proportion to differences between the variable pressure pilot signal (P) and the bias pressures (B1-B3). The relay torques created by the second and third relays (201, 202) are amplified by the amplifiers (204, 205). Thus, the rotational control apparatus (A) can be fully utilized for its full torque range while still providing enough resolution to control tension of the web (W) precisely.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventor: John Andrew Metza
  • Patent number: 6585181
    Abstract: The combination of a bobbin assembly and a support for the bobbin assembly. The bobbin assembly has a core around which a supply of thread can be wrapped and having a rotational axis, a first flange having first and second oppositely facing surfaces with the first surface bounding a storage space for thread wrapped around the core, and a magnetic element. The support has a third surface with a first metal material facing the second surface with the bobbin assembly operatively connected to the support and sufficiently close to the magnetic element so that a magnetic field is generated between the magnetic element and first metal material that tends to resists movement of the bobbin assembly relative to the support around the rotational axis of the core.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: July 1, 2003
    Inventor: Ronald Kronenberger
  • Patent number: 6541728
    Abstract: A wire tensioning system for a wire-shaped working electrode of a spark erosion machine and a procedure for the tensioning of the working electrode. The working electrode at least nearly circumferentially encompasses a braking roller in a wire entry zone and/or a tensioning roller in a wire withdrawal zone. A nozzle is assigned to the braking and/or the tensioning roller such that the nozzle exerts a tensile force on the working electrode to tension the wire.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: April 1, 2003
    Assignee: Agie SA
    Inventors: Giorgio Baiardi, Peter Wehrli
  • Patent number: 6257512
    Abstract: Magnetized bobbin cores are preferably wound with sewing thread to obtain sideless, pre-wound bobbins that have beneficial draw-off tensions, draw-off tension uniformity and overspin characteristics. The pre-wound sideless bobbins may thus be satisfactorily used in lock stitch sewing applications due to improved uniformity of draw-off tension combined with reduced bobbin overspin. The magnetized pre-wound sideless bobbins are also especially well suited for end-use sewing applications where automatic bobbin changing equipment is employed. Most preferably, the core is a cylinder formed of a thermoplastic or thermoset material in which magnetized particles are dispersed.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: July 10, 2001
    Assignee: Fil-Tec, Inc.
    Inventors: Vincent E. Schoeck, Edwin E. Fuller