Spring Or Weight Return Patents (Class 74/141)
  • Patent number: 10861494
    Abstract: A musical instrument configured to generate a scratching sound effect includes a rotatable platform configured to support a record thereon, and a pedal (such as, for example, a foot pedal) operably coupled to the platform. The foot pedal is actuatable from a first position to a second position to rotate the platform, and in turn, the record.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: December 8, 2020
    Inventor: Jon Schreckinger
  • Patent number: 8854806
    Abstract: A memory protection device and a computer including the memory protection device are disclosed. The memory protection device includes insulating heat-conducting bars which are provided on an upper end of slot arms at two sides of a memory connection base and cover up heat emitting holes of the slot arms.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: October 7, 2014
    Inventor: Lin Feng
  • Patent number: 8079446
    Abstract: The invention provides an operational mechanism for a movable body in which, after a movable body is in an opened state, the movable body can return to a closed position, including a movable body rotatably attached to a support and rotatable between an engaged position, a closed position, and an open position; a rotating member rotatably attached to the support, that rotates due to movement of the movable body to the engaged position; a biasing member, one end of which is attached to the movable body, and the other end of which is attached to the rotating member; and an operation member, which rotates the rotating member, changes the biasing position of the biasing member with respect to the center of rotation of the movable body, and generates in the biasing member a rotational force that moves the movable body to the closed position or the open position.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: December 20, 2011
    Assignee: NIFCO Inc.
    Inventor: Takehiko Nemoto
  • Patent number: 6900610
    Abstract: The invention is a system for controlling the position of a movable member moved by a prime mover by monitoring the position of the movable member; generating position information based upon this monitoring; and controlling the prime mover based upon the position information by providing a counter force to the movable member substantially equal to an opposing force opposing the movement of the movable member. The invention may include a movable member, such as a ram used for fastening a terminal to a wire; a spring; a DC planetary gear motor for providing a force to the movable member opposing the spring; a position detector, such as an linear voltage displacement transducer, to detect the position of the movable member and generate position information; and a controller, which may include a logic board or microprocessor and memory, for controlling the force from the motor in response to the position information.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: May 31, 2005
    Assignee: Tyco Electronics Corporation
    Inventors: Gary L. Deck, Douglas S. Pfautz, Keith L. Nicholas
  • Patent number: 4953415
    Abstract: The invention relates to an arrangement for converting reciprocating motion into even rotational motion. The arrangement comprises a frame (1), a flywheel (2), a pull member (3) attached to the flywheel by means of a free gear mechanism (4), and a brake band arranged to resist the rotational motion of the flywheel (2). In order to achieve smooth operation without jerks, the arrangement comprises a relief member (7) connected to the frame by means of a lever mechanism (4). When the pull member (3) is pulled (A), it presses the relief member (7) and turns the lever mechanism so that the brake band is tightened against the flywheel. When the free gear mechanism (4) draws the pull member in direction (B), the lever mechanism (9) is arranged to turn so that it reduces the tightening force exerted by the brake band on the peripheral face of the flywheel. (FIG. 1).
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: September 4, 1990
    Assignee: Tunturipyora Oy
    Inventor: Kari Lehtonen
  • Patent number: 4807896
    Abstract: An operator powered skateboard including a platform, a drive assembly mounted to the platform about a pivot axis for axial displacement. The drive assembly including an external power assembly engaging a skateboard axle for causing rotation of the axle in one direction and a handle connected to the external power assembly for selectively engaging the power assembly. The skateboard including at least two pairs of wheels, one pair connected to the drive assembly, the other pair mounted to the platform about a second pivot axis for independent axial displacement.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: February 28, 1989
    Inventor: Randy J. Philippi
  • Patent number: 4655098
    Abstract: A drive mechanism for a circuit breaker has a spring which is to be tensioned by means of a shaft. On said spring sits a clamp-roll freewheel as a directional lock, whose outer part is connected via a flexible strip traction member to one or more eccentric members. The clamp rollers can be pressed out of their operating position by means of cage disks, which occurs upon reaching the end position of the spring-tensioning shaft by means of a release lever in connection with toggle levers.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: April 7, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ulrich Marquardt, Ralf Seebold
  • Patent number: 4637152
    Abstract: A rotary drive mechanism for toys, kinetic sculptures, and the like, employs a pawl and ratchet mechanism to transmit driving torque between a driving wheel and a driven inertia wheel. The driving wheel may itself be driven by means of a drive string that may frictionally engage a circular drive surface to permit the driving wheel to be rotated independently with limited slippage between the string and the drive surface. A fixed and uniform amount of energy can be imparted to the driving wheel and the driven wheel through a spring that is connected to the drive string and preloaded by a predetermined amount. A second inertia wheel can be mounted coaxially of the one inertia wheel and both wheels may operate with random motion through an interference coupling. The pawl and ratchet mechanism in one embodiment forms an escapement to provide intermittent drive to the wheels. The inertia wheel is rotationally unbalanced with a weight offset from the axis of rotation.
    Type: Grant
    Filed: May 11, 1983
    Date of Patent: January 20, 1987
    Inventor: David C. Roy
  • Patent number: 4453729
    Abstract: A wheelchair having a frame capable of supporting the occupant includes a plurality of wheels including two driving wheels. Left and right side levers are mounted on the wheelchair such that the tops of the levers can be moved back and forth reciprocally toward and away from the occupant of the wheelchair. When the levers are in a position towards the occupant of the wheelchair, they are in a neutral position and by pushing away from the occupant from the neutral position to a displaced position, a power stroke is performed. Movement of the levers in the reverse direction back toward the occupant constitutes a return stroke of the same. A power transfer mechanism includes a first and second ratchet operatively associated with each of the driving wheels. The first ratchet allows the driving wheel to free wheel at all times in a forward direction.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: June 12, 1984
    Inventor: Wesley O. Lucken
  • Patent number: 4354402
    Abstract: The invention pertains to rotary volumetric apparatus comprising a stationary framework and a rotary assembly mounted thereon. The rotary assembly includes a rotary shaft. The apparatus further includes a reciprocating drive engine and a driven member connected to the rotary shaft. A linkage system drivingly connects the driven member to the engine for rotation in a first direction upon reciprocating movement of the engine in a first directional mode and for rotation in a second direction opposite the first direction upon reciprocating movement of the engine in a second directional mode opposite the first mode. A clutch interconnects the driven member and the shaft and is operative upon rotation of the driven member in the first direction to cause rotation of the shaft therewith, and upon rotation of the driven member in the second direction, to permit relative rotation between the driven member and the shaft, whereby the shaft is rotated by the drive engine in temporally spaced increments.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: October 19, 1982
    Inventor: John W. Scott
  • Patent number: 4271712
    Abstract: An elongate flexible power transmission member, stationarily affixed at one end and secured to tension biasing means at the other end, is engaged with a unidirectional drive mechanism. Reciprocating power input means angularly deflect a section of the power transmission means, causing reciprocal movement of the power transmission means and urging rotation of the unidirectional drive mechanism. The drive ratio between the length of the stroke of the reciprocating power input means and the degree of rotation of the unidirectional drive mechanism is controlled by a pair of extendibly and retractably movable guides engaged with the power transmission member for determining the section thereof subject to angular deflection.
    Type: Grant
    Filed: April 20, 1979
    Date of Patent: June 9, 1981
    Inventor: Herbert O. White
  • Patent number: 4223809
    Abstract: A wall or table-mounted cream or paste dispensing device which includes a mounting base and a cooperating brush holder and cover and further characterized by a travelling carriage which is fitted with a roller to effect collapse of a toothpaste or other cream-containing tube, which roller is constrained to move downwardly against the tube in discrete increments by activation of a lever and pull chain combination. The carriage travels on the chain responsive to manipulation of the lever, and paste or cream is dispensed in controlled quantities from a nozzle communicating with the compressed tube.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: September 23, 1980
    Inventor: Ronald D. Martin
  • Patent number: 4154121
    Abstract: A unidirectional clutch mechanism for use in a toy vehicle or the like having an inertia motor energized by a spring-return drawstring mechanism having a drive spool receiving the drawstring and the return spring, the drive spool having a drive disc portion with an integral square shank loosely encircled by a clutch disc with a circumferentially disposed slot engaged by an arcuate projection on the surface of the drive disc, the projection being shorter in length to allow relative motion between the discs. The opposite surface of the clutch disc is provided with a pair of diametrically opposed bearing members, each pivotally receiving a pawl of a unitary spring member having a square portion engaging the square shank with spring portions extending therefrom to pivot said pawls upon relative motion between the shank and the clutch disc.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: May 15, 1979
    Assignee: Mattel, Inc.
    Inventor: Toshio Yamasaki
  • Patent number: 4082267
    Abstract: A proportioned resistance exercising apparatus capable of exercising two limbs synchronously or separately with a single resistance mechanism. Two limb-engageable drive input devices are connected through one-way clutches to a single rotary shaft, which is, in turn, drivingly connected to the proportioned isokinetic resistance-producing mechanism.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: April 4, 1978
    Inventor: Evan R. Flavell
  • Patent number: 3997766
    Abstract: Several embodiments of a rotary indexing mechanism having either an angularly reciprocable or rectilinearly reciprocable input, an output rotary friction drum and a one-way drive interconnect system between the input and friction drum comprising a drive line wrapped about the friction drum having one end connected to the reciprocable input and a line tensioning spring connected between the other end of the drive line and the reciprocable input and whereby the input is adapted to be actuated in one direction to draw the drive line from the friction drum and rotate the friction drum in one angular direction and to be actuated in the reverse direction by the tension spring to pay out the drive line to the friction drum and thereby uncouple the drive line from rotating the friction drum in the reverse angular direction.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: December 14, 1976
    Assignee: Veeder Industries, Inc.
    Inventor: Howard J. Voegelin