Single Revolution Input Effects Desired Fractional Output Patents (Class 74/827)
  • Patent number: 8692492
    Abstract: A method for setting a lead-angle value of a motor drive control circuit is disclosed. The motor drive control circuit energizes and drives the windings of a motor with an energizing timing based on a stored lead-angle value. The method includes the steps of: rotating a rotor at a given rpm (step S102), energizing and driving the windings during the rotation at the given rpm with the lead-angle value being switched (step S110); calculating an average value of current amount that energizes and drives the windings (step S114); calculating a total value of consecutive multiple average values for each lead-angle value (step S120); finding a smallest total value among the total values, and setting a lead-angle value corresponding to the smallest total value as a stored lead-angle value (step S122).
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: April 8, 2014
    Assignee: Panasonic Corporation
    Inventor: Daisuke Sato
  • Patent number: 7762513
    Abstract: A display screen turning apparatus includes a base portion for placing a display screen portion thereon, a transmission gear portion for transmitting driving force of a driving source arranged inside the base portion, a display screen support member supporting the display screen portion rotatably in a horizontal plane and a vertical plane, a rack plate arranged on the base portion and including a rack gear meshed with the transmission gear portion in a horizontal direction, and a coupling portion rotatably coupling the rack plate in the horizontal plane with respect to the display screen support member. The display screen support member is rotated in the anteroposterior direction with respect to the vertical plane by a prescribed angle through the coupling portion coupled to the rack plate following reciprocation of the rack plate in the horizontal plane with normal and reverse rotation of the driving source.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: July 27, 2010
    Assignee: Funai Electric Co., Ltd.
    Inventors: Kunio Sawai, Toshiharu Hibi
  • Patent number: 6354550
    Abstract: A video display stand having dual panning axes suitable for controlling a screen direction of appliances such as a TV set or a personal computer without bumping against a wall even in a state that it is positioned very closely to the wall, and its controlling method for automatically controlling screen directions by using a driving force, including two motors being installed having gear driving shafts at one side of either a rotational base or a rotation support member of the TV set; two movement guide toothed slots each being formed along a circular arc centering a mutually opposite gear driving shaft with a predetermined width and depth, at the opposite side corresponding to the position of each motor, and having a gear portion to be engaged with the gear driving shaft at one side of each wall; and a controller for controlling driving of the motors.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: March 12, 2002
    Assignee: LG Electronics Inc.
    Inventor: Seog Yeong Jeong
  • Patent number: 6334599
    Abstract: A video display stand having dual panning axes suitable for controlling a screen direction of appliances such as a TV set or a personal computer without bumping against a wall even in a state that it is positioned very closely to the wall, and its controlling method for automatically controlling screen directions by using a driving force, including two motors being installed having gear driving shafts at one side of either a rotational base or a rotation support member of the TV set; two movement guide toothed slots each being formed along a circular arc centering a mutually opposite gear driving shaft with a predetermined width and depth, at the opposite side corresponding to the position of each motor, and having a gear portion to be engaged with the gear driving shaft at one side of each wall; and a controller for controlling driving of the motors.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: January 1, 2002
    Assignee: LG Electronics Inc.
    Inventor: Seog Yeong Jeong
  • Patent number: 5711192
    Abstract: An improved indexing device for generating a smooth and controlled rotary motion where double rotary cranks having slide members coupled to corresponding slide guides arranged in orientation parallel to the plane of rotation of the rotary cranks are provided. Each slide guide is attached to a trolley movable in a direction transverse to the axis of the slide guides. A linear gear rack is mounted on each trolley in parallel to its sliding motion and are opposingly configured across a rotary gear member. The gear member drives a positive locking clutch which is entirely self contained within the indexer assembly itself and requires no operator or external control. The clutch function is accomplished automatically when appropriate during the indexer cycle. During stationary periods, the output of the indexer is locked preventing movement of the indexer and providing unique stability to the device.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 27, 1998
    Inventor: Michael Vasilantone
  • Patent number: 5031478
    Abstract: Rotation and linear movement of a main gear is provided by a pinion gear rotatably mounted on a crank arm and in meshing engagement with the main gear. A connecting arm between the gear centers keeps the gears in meshing engagement. The pinion gear may have a diameter one half the diameter of the main gear to provide rotation of the main gear 180 degrees after one revolution of the pinion gear. The crank arm may be rotated in opposite directions to provide oscillating movement of the main gear. In a tire building machine, the main gear may be mounted in a linear guide of an upright plate member for vertical movement. The main gear is connected to a shaft for rotating and tilting a hub member having two spaced apart tire building drums mounted with axes at an angle of 90 degrees and in the same plane as the axes of the tire building drums so that they can be oscillated between two fabricating positions.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: July 16, 1991
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Michael L. Becker, Henry D. Broyles, Kenneth D. Conger, James M. Hart, Arland A. Peck, Dean C. Testa
  • Patent number: 4905543
    Abstract: A device for turning a monitor to a position at which a viewer can comfortably see the monitor. The device comprises a turntable carrying a monitor thereon, a cam shaft adapted to rotate the turntable in a desired direction utilizing a cylindrical cam having at an outer surface thereof an arc-shaped cam groove. The cam shaft receives a drive force from a drive motor via a reduction gear mechanism.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: March 6, 1990
    Assignee: Goldstar Co., Ltd.
    Inventor: Soo I. Choi
  • Patent number: 4896560
    Abstract: An indexing device comprises a rotatably driven input shaft; a globoidal cam having, for the purpose of outputting intermittently the rotation of the input shaft, a taper rib defining a cam face which has a disk-shaped end face gradually yielding to a helical face about the input shaft; an output shaft to which the rotation of the input shaft is transmitted so that the output shaft may rotate intermittently; an indexing disk provided on the output shaft and having supports protruding radially outwardly at intervals along the circumference of the indexing disk, the ridge of the taper rib fitting between the adjoining supports; cam followers each disposed at the end of the support on the indexing disk and brought into engagement with the taper rib so as to be intermittently driven along the cam face; and gaps provided between the ridge of the taper rib and the supports opposite this, the gap being filled up by the elastic deformation of the cam follower so that the ridge of the taper rib may come into contact w
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: January 30, 1990
    Assignee: Sankyo Manufacturing Company, Ltd.
    Inventor: Heizaburou Kato
  • Patent number: 4287748
    Abstract: A rotary transfer press apparatus wherein a plurality of workpieces are simultaneously and progressively moved over a circular path through a series of working stations which themselves are arranged in a circular path whereby successive operations are performed on each workpiece to obtain a finished product for each cycle of the press.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: September 8, 1981
    Assignee: Stewart Stamping Corp.
    Inventor: Maurice Wolfthal
  • Patent number: 4282779
    Abstract: An indexing drive apparatus comprises a cam assembly connected to a drive source, a cam follower turret adapted to follow the rotation of the cam assembly to be swung, a turret shaft having the turret assembly fixedly mounted thereon and adapted to be rotated in an oscilatory manner in correspondence to the swinging movement of the turret, an output shaft extending in parallel with the turret, and interlocking unit for operatively connecting the turret shaft and the output shaft. The interlocking unit includes a first swing arm secured to the turret shaft, a slide member supported in the first arm slidably in the axial direction thereof, a second swing arm secured to the output shaft, a connecting member pivotally connecting the slide member to the second swing arm, and adjusting means provided in association with the slide member for varying the ratio of a swing angle of the second swing member to that of the first swing arm by adjusting the position of the slide member relative to the first arm.
    Type: Grant
    Filed: October 24, 1979
    Date of Patent: August 11, 1981
    Assignee: Sankyo Manufacturing Company, Ltd.
    Inventor: Heizaburo Kato
  • Patent number: 4202221
    Abstract: Indexing apparatus is disclosed whereby a constantly rotating drive shaft can intermittently drive apparatus driven thereby. An arm carried by the drive shaft pivotally carries a second arm which has means for engaging a cammed surface whereby the pivoted arm is moved radially toward and away from the drive shaft. The rotated output member is mounted for rotation about the longitudinal axis of the drive shaft and includes a projection adapted to be engaged selectively by an engaging member on the pivoted arm as the pivoted arm is rotated in response to the positioning of the camming surface. In the preferred embodiment, the projection is an extended member and the engaging member is initially brought into contact close adjacent the drive shaft and moved radially outward in a decreasing amount whereby the rotated member is smoothly accelerated. Correspondingly, upon disengagement, the engaging member is moved radially outward in an increasing amount to smoothly decelerate the rotated member.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: May 13, 1980
    Assignee: Thompson Bagel Machine Manufacturing Corp.
    Inventor: Daniel T. Thompson
  • Patent number: 4028966
    Abstract: A rotary index table wherein a detent oscillating about the table axis of rotation is translated radially inwardly during indexing and retracted radially outwardly during the return stroke of the detent, both actions being accomplished through a positive acting toggle link arrangement. The positive detent engagement with the table during indexing prevents table overtravel, and a locking detent is utilized to produce final table orientation. The table also includes expansible chamber motor means axially translating the table into a frictional locking engagement with its base.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: June 14, 1977
    Assignee: Universal Vice & Tool Co.
    Inventor: Robert L. Taylor
  • Patent number: 3965775
    Abstract: An indexing mechanism for converting reciprocating motion into intermittent rotary or linear motion. Driving elements engage driven elements during each motion of the reciprocating member in either direction to effect intermittent motion of the workpiece in the desired location. The driving elements also include locking means to limit the motion imparted by the reciprocating member and lock the driven elements in place until the reciprocating member moves in the opposite direction. Several different embodiments are disclosed employing the same inventive principles.
    Type: Grant
    Filed: December 27, 1974
    Date of Patent: June 29, 1976
    Inventor: Mordehay Pinkesfeld