831 results about "Repulsion force" patented technology

In a driver golf head (1) comprising a face (4) having a hitting surface, a sole (3) forming a lower portion, and a crown (5) forming an upper portion, the sole (3) is improved. The sole (3) in the position close to the face (4) was formed into an elastically deformable recess-projection shape, and part of the face (4) was formed into a projecting shape and integrated with the sole (3) to increase rigidity. Using a configuration with increased rigidity and decreased rigidity between the face (4) and sole to obtain an elastically deformable portion and providing a high-rigidity body (12) increased the repulsion force in the lower portion of the face and extended the traveling distance of the golf ball.

A disk apparatus includes (a) an actuator having a head supporting arm with a tab formed on the arm and a voice coil fixed to the arm, which arm is rotatable on a horizontal rotary shaft as well as on a vertical rotary shaft, (b) a voice coil motor having an upper yoke with a magnet fixed to the upper yoke and a lower yoke sandwiching and confronting the voice coil, and (c) a ramp section guiding and holding the tab at a refuge place. When the actuator at the refuge place starts loading with a starter command, a pulsed driving current is applied to the voice coil temporarily for urging the tab against a tab-holding plane of the ramp section, thereby making use of repulsion force generated on the actuator, so that the tab can leave the refuge place efficiently for carrying out the loading operation.

There is provided a Ti alloy hollow club head which is more lightweight yet capable of realizing a better repulsion force by adjusting weight and thickness of a club head plate, with its strength ensured. Ribs are formed by chemically polishing the inner surface of a material of a crown plate to a 0.3 to 0.9 mm thickness, and a 0.3 to 4 mm width, and then first concave portions are formed to a 0.2 to 0.5 mm thickness. Thus, strength of the crown plate can be ensured by the ribs, while making the thickness thereof as thin as possible.

The invention relates to a UAV (unmanned aerial vehicle) formation control method and device based on an artificial potential field. The method is characterized by converting a formation coordinate system to a global NED coordinate system, and determining an ideal position of each UAV in the formation in the global NED coordinate system; according to a preset target position of the UAV and the ideal position of the UAV, determining gravity applied to the UAV by the preset target position; according to velocity vector of the UAV and velocity vector of a barrier corresponding to the UAV, determining repulsion force applied to the UAV by the barrier; according to the gravity applied to the UAV and the repulsion force applied to the UAV by all barriers, determining resultant force applied to the UAV; and according to the resultant force applied to the UAV and flight status information of the UAV and wing planes around, determining movement trend of the UAV to enable a controller to carry out flight control on the UAV formation according to a motion model of the UAV.

The invention discloses an electromagnetic relay which resists electric repulsion force. When a relay contact is closed and the electromagnetic relay works, the relay is loaded, and a coil is provided with a setting signal. The current direction of a second leading-out sheet is opposite to the current direction of a movable spring, thus producing a magnetic field through the interaction. The magnetic field enables the movable spring to produce electromagnetic force. The produced electromagnetic force is in the same direction as the pushing force produced by a pushing card, thus increasing the contact pressure of a contact which is enough to resist the destruction of the electric repulsion force. The invention completely eliminates the technical problem that the electric repulsion force causes the contact to return easily in prior art. The invention further has the advantages of large resultant force of the electromagnetic force and the pushing force, small contact pressure of the contact, small contact resistance, reliable and stable electrical contact of the contact, capability of resisting short-circuit current, preventing the functional relay from being damaged, large switching power of the contact, capability of working under large load for long term, compact conformation, shock resistance, high impact capability, high capability of carrying load, low price, high manufacturability. In addition, the switching frequency of the invention shall not be too high, and the invention is applicable for streamlined production in large quantity.

A magnetic positioning system for use in inductive couplings. The magnetic positioning system having a magnet that provides sufficient magnetic force, but does not have enough electrical conductivity to overheat in the presence of the anticipated electromagnetic field. The magnet may be a bonded magnet or a shielded magnet. In another aspect a plurality of magnets are used to provide magnetic attraction forces and said magnetic repulsion forces that cooperate to align the inductive power supply and the remote device. In another aspect, a sensor allows differentiation between different positions of the remote device or inductive power supply. In another aspect, multiple magnets in the inductive power supply interact with multiple magnets in the remote device to position the remote device in different positions.

A method to control the velocity of a treadmill according to the walking velocity of the person that is using the treadmill. A reaction force is measured, which occurs when a longitudinal repulsion force is created between the treadmill (2) and the person (1). A signal representation for said reaction force is transmitted to a control unit. The control unit is used to control the velocity of the treadmill.

Disclosed is a stage device by which high precision motion and high speed motion can be accomplished simultaneously. The stage device includes a stage, a repulsive magnet unit for accelerating and / or decelerating the stage with respect to a movement direction, and a magnetic driving system for controlling the position of the stage. The repulsive force generator has (i) a repulsive stator, as a set magnet, including a plurality of magnets disposed along a direction orthogonal or substantially orthogonal to the movement direction, with a spacing therebetween while different poles of them are opposed to each other, and (ii) a repulsive movable element, as an insert magnet, to be mountably and demountably inserted into the spacing and being disposed in relation to the repulsive stator so that the same poles are opposed to each other.

The present invention relates to a switch with a rocker, which has an affixed magnet, capable of being reliably opened or closed by a mechanical operation of a magnetized rocker. The present invention comprises of a supporting plate and a plurality of electromagnets occurring a magnetic force when a power is supplied thereto and being disposed in a bottom surface of the supporting plate. Further, the present invention has a rocker made of a magnetic substance, magnetized in order to occur repulsion with the electromagnet and then rotated by a predetermined angle. Furthermore, the present invention at least one magnet for magnetizing the rocker and retaining an inclined state of the rocker by the if occurred attraction with the electromagnet, and being disposed on the rocker. Also, the present invention has a plate spring, to provide a pressure along with the rotation of the rocker, having erect portions on both end portions thereof, in which the erect portions are fixed to the rocker, and a contact means to contact with connectors by the pressure of the plate spring.

The invention discloses a high-voltage direct-current circuit breaker based on a rapid repulsion force mechanism and an insulating transformer. The circuit breaker topologically comprises a current conversion branch circuit, a main circuit breaker branch circuit, a rapid switching energy supply unit, a main loop electric reactor unit and a main loop isolation switching unit. The current conversion branch circuit is an LC oscillation branch circuit. The main circuit breaker branch circuit is formed by connecting an adjustable electric reactor and a plurality of rapid switching energy absorption voltage-sharing modules in series. Each rapid switching energy absorption voltage-sharing module is formed by connecting a rapid switch, a lightning arrester and an RC voltage-sharing branch circuit in parallel. The rapid switching energy supply unit ensures rapidity and cooperativity of actions of the rapid switches. The main loop electric reactor unit is used for reducing a fault current ascending rate. The main loop isolation switching unit is used for protecting internal components after the circuit breaker conducts breaking successfully. According to the high-voltage direct-current circuit breaker, on the basis of the rapid repulsion force mechanism and the insulating transformer, the breaking speed is high, the fault current is prevented from ascending to the larger amplitude, the voltage level borne by the circuit breaker is high, breaking reliability is high, the structure is simple, and the manufacturing cost is low.

A blow-molding installation for manufacturing receptacles from blanks of thermoplastic polymer, said installation comprising a bell-nozzle for blowing a fluid under pressure into a blank (3) disposed in a cavity (2) of a mold (1), the end of the nozzle being in the shape of a bell (11) which is suitable, during blow-molding, for being pressed into leaktight end-to-end abutment against a wall (F) of the mold while capping the neck (7) of the blank that emerges from said wall; said installation further comprises means (161) for securing the nozzle to the wall of the mold by mutual attraction, which means can be activated, after the nozzle has been brought into end-to-end contact with the wall (F) of the mold without flattening a sealing gasket (13), so as to attract the nozzle (10) and the wall (F) towards each other with an attraction force greater than the repulsion force due to the pressure of the blow-molding fluid.

An article of jewelry and method of manufacture, including a pliable strand; and a plurality of precious or semiprecious objects movably positioned along the pliable strand. Each of the plurality of objects including a magnetic insert extending between opposing surfaces, which itself is formed from two magnets separated by a magnetic stabilizer and aligned such that the opposing ends of the magnetic insert have the same polarity thereby creating repulsive forces between each of the plurality of objects along the strand.

A lens driver (1) comprising a moving lens body (10) consisting of a lens-barrel (10b) provided with a lens (14) and a lens-barrel holder (10a) for supporting the lens-barrel (10b) so as to be movable in the direction of the optical axis (11). The lens-barrel holder (10a) has a driving magnet (16) and a case body (24) for supporting the moving lens body (10) so as to be movable in the direction of the optical axis (11) encases first and second driving coils and has an end face (27) of an inner tubular section (26b) and a projecting edge (36) of an inner tubular section (42b) that regulate the moving range of the lens-barrel holder (10a) in the direction of the optical axis (11). The moving lens body (10) is moved by a magnetic attracting force or repelling force of the driving magnet (16) and the first and second driving coils.