1967 results about "Head moving" patented technology

A surgical stapling apparatus including a handle assembly, an elongated shaft extending distally from the handle assembly, a shell assembly containing a plurality of staples arranged in an annular array, and a firing mechanism for advancing staples from the shell assembly. An anvil assembly including a tiltable anvil head movable from an aligned operative position to a tilted position. A camera assembly is operatively coupled to a distal surface of the tiltable anvil head such that an orientation of the camera assembly changes as the anvil head moves from the operative to the tilted position.

A wood type golf club head has a hollow body, an air fin and air guides. The hollow body has a front, a rear, a crown and a sole. The crown has a top convex surface with a symmetric central line. The air fin is formed perpendicularly from the convex top surface of the crown from the front to the rear of the hollow body along the symmetric central line of the convex top surface. The air guides are defined on the sole with a forked configuration and are extended to the air fin. The air fin and the air guides will reduce external airflow effects during the golf club head moving. Consequently, the motion and direction of the motion of the golf club head will be stable such that a golfer will swing successfully to hit a golf ball.

A method is disclosed for determining fundamental-frequency repeatable runout (1FRRO) coefficients in a disk drive. The disk drive includes a transducer head, a rotating magnetic disk having a plurality of concentric data tracks defined by embedded servo wedges that provide position information, and an actuator coupled to the head. In the method, the head is caused to move in a substantially constant velocity motion across a selected portion of the tracks of the rotating magnetic disk in response to a control signal. The position information is read from the embedded servo wedges as the head moves across of the selected portion of the tracks. The 1FRRO coefficients are determined based on the position information read as the head moved in a substantially constant velocity motion across the selected portion of the tracks.

A golf putter assembly includes a putter including a head, a display unit disposed in the putter, and a detecting unit disposed in the putter and electrically coupled to the display unit. The detecting unit is operable to detect and record a stationary starting position of a golf ball. The detecting unit is further operable to detect, during a practice swing, an instantaneous speed of the head as the head moves past the starting position, and to calculate what would be an initial speed of the golf ball if the golf ball was actually hit by the head with reference to the instantaneous speed of the head detected thereby. The detecting unit further performs control such that the initial speed of the golf ball as calculated is displayed on the display unit.

The invention discloses a 3D free head moving type gaze tracking system belonging to the technical field of image processing and pattern recognition. The 3D free head moving type gaze tracking system is realized by using the method comprising the steps of: calibration of camera internal parameters, the establishment of a hardware system, the extraction of the center calibrates of pupils in images and a flare point, the determination of the three-dimensional calibrate of a cornea center, the determination of the three-dimensional of the pupil center, the reconstruction of a visual axis and the final error correction treatment. A camera and two LED light sources are adopted in the gaze tracking system which overcomes the restriction that a head part of a traditional 2 D gaze tracking system need be strictly fixed and the disadvantage that a plurality of cameras or auxiliary devices are required to position the three-dimensional calibrate information of human eyes for 3D gaze tracking, and the invention further provides a gaze tracking method with convenient use, low cost and high accuracy.

Head position control is implemented in a disk drive for the case in which a disk is assembled into the disk drive after a precise track is recorded onto it using an external apparatus, which is capable of high-speed access even if there is eccentricity between a track defined by servo information and the center of rotation of the track. Two phase servo bursts consisting of servo information are recorded onto each of the servo information regions of a disk surface, in mutual alternation, the strength ratio between signals detected from these two phase servo bursts being used to determine to which side the head is displaced. By performing control so that this strength ratio is a prescribed value at each angular position, control is achieved so that the head moves along a circular path of rotation, even if there is eccentricity in the servo circular path defined by the recorded servo information with respect to the center of rotation.

The present invention provides a scribing device and a scribing method, for fragile material, capable of setting interior contact and exterior contact etc. A fragile material substrate is configured on a bench, such that the bench moves in Y axis direction freely and rotates freely by means of a motor. Further, the scribing head moves freely in X axis direction. Prescription data table of set interior contact and exterior contact is stored. Therefore, it can be carried out to scribe the interior contact and exterior contact according to the prescription data table.

A tool for replacing a valve seat of a reciprocating pump has a puller shaft connected to a puller head having at least two spring-biased dogs. An operator inserts the puller head into a valve bore and through a valve seat, the dogs retracting as the puller head moves through the valve seat, then snapping back outward. A hydraulic cylinder engages the puller shaft to exert a force on the puller shaft causing the dogs to dislodge the seat. The operator then places a replacement valve seat on a shoulder in the valve bore. The operator attaches an installing head to an installing shaft and inserts the installing head into the valve bore into contact with the replacement valve seat. The hydraulic cylinder applies a force in an opposite direction on the installing shaft to push the replacement valve seat into installed engagement.

The invention belongs to the field of laser processing, in particular to a multi-beam center wire feeding laser processing head and a processing method of the multi-beam center wire feeding laser processing head. The laser processing head comprises a wire feeding tube, a wire feeding nozzle and a plurality of identical optical modules, wherein the wire feeding tube and the wire feeding nozzle are located on the center axis of the laser processing head, the optical modules are rotationally and symmetrically distributed around the center axis, each optical module comprises a collimating lens set, a focusing lens set and a reflecting mirror set, lasers are transmitted to the processing head through a plurality of paths of optical fibers, a plurality of laser beams are focused on one point of the surface of a workpiece to form a molten pool after being collimated, focused and reflected by the optical modules, a metal wire is perpendicularly fed into the molten pool on the surface of the workpiece through the fire feeding nozzle, and the laser processing head moves on the surface of the workpiece according to a certain track so that the center wire feeding laser processing process can be achieved. Through the multi-beam center wire feeding laser processing head, center wire feeding in laser focusing light spots in circular symmetry distribution is achieved, and the processing quality consistency is guaranteed when the laser processing head moves in different directions.

The invention discloses a fully automatic glue dispenser used for spreading glue on the bracket of a magnetic-induction circular loudspeaker, comprising a machine frame. The machine frame thereon is provided with a feeding device, a glue dispensing device and a locating device for locating a work piece. The glue dispensing device thereon is provided with a glue spreading head. The locating device thereon is provided with a material receiving channel, a fixed work piece and a rotating fixture capable of driving the work piece to rotate. The material receiving channel receives the work piece sent from a material sending device, the work piece is located on the rotating fixture and then the glue spread surface of the work piece is aligned with the glue spreading head on the glue dispensing device. In the glue spreading process, the rotating fixture drives the work piece to rotate for a set number of turns, and the glue spreading head moves downwards to a specified position and then spreads glue on the glue spread surface of the work piece. By using above structure, the invention can realize fully automatic operations of feeding and locating the work piece, spreading glue and blanking the work piece. The invention feeds material stably, accurately locates the work piece, and can be synchronously applied to the glue spreading requirement of work pieces of different specifications. The whole machine runs reliably, is in favor of improving production efficiency and ensuring product quality, and reduces influence of personal factor on the product quality.

The invention provides a rotational atherectomy device having, in various embodiments, a flexible, elongated, rotatable drive shaft with at least one flexible or inflexible eccentric enlarged abrading and cutting head attached thereto which comprises an abrasive surface. When placed against stenotic tissue and rotated at high speed, the eccentric nature of the abrading and cutting head moves along an orbital path, opening the lesion to a diameter larger than the resting diameter of the enlarged abrading and cutting head. Preferably the abrading and cutting head has a center of mass spaced radially from the rotational axis of the drive shaft, facilitating the ability of the device to travel along an orbital path. The abrading and cutting head comprises proximal and/or distal radiused surfaces that facilitate cutting difficult stenosis material while minimizing trauma to the vessel. In some cases, the abrading and cutting head is made from a relatively dense metal.

The invention discloses a construction wall spraying device, which comprises a bottom plate, a first threaded rod, a first motor, a lifting mechanism, a first rotating shaft, a first gear, a second gear, a second motor, a biaxial motor, a second Two rotating shafts, the first sprocket, chain, the second sprocket, U-shaped mounting plate, the second threaded rod, the third motor and the nozzle, the present invention is provided with a lifting mechanism, which can adjust the height of the nozzle, and is convenient for different heights The wall is sprayed, and the second motor, the first gear and the second gear are provided. Through cooperation, the steering of the nozzle can be adjusted to facilitate spraying on irregular walls. There are a first sprocket, a chain, a second sprocket and The U-shaped mounting plate drives the nozzle to move up and down through cooperation to spray the wall with uniform spraying and high efficiency. It is equipped with a third motor and a second threaded rod, which drives the nozzle to move the position through cooperation, avoiding back and forth when spraying the wall. Moving the whole device has high efficiency and reduces the labor intensity of workers.

The invention provides a three-dimensional printer and a printing method of the three-dimensional printer. The three-dimensional printer comprises at least two print cartridges, a print cartridge installation rack, a movable frame, a driving head, at least two printing heads and at least two shifters. The print cartridges are installed on the print cartridge installation rack. The driving head is installed on the movable frame. Each printing head receives consumable items from the corresponding print cartridge. The printing heads are detachably connected with the driving head through first connecting devices. Each shifter is detachably connected with the corresponding printing head through a second connecting device. The printing method of the three-dimensional printer comprises the following steps: the driving head moves one printing head connected with the driving head to the corresponding shifter, each shifter is connected with the corresponding printing head, and the driving head is detached from the printing head; the driving head moves to the other printing head, the driving head is connected with the printing head, and the corresponding shifter is detached from the printing head. The three-dimensional printer and the printing method of the three-dimensional printer have the advantages that the structure is simple, control is easy, and cost is low.

An electric toothbrush in which the brushing head moves in an elliptical motion such that, on the brushing stroke, the bristles are proximate the teeth, and in the recovery portion of the cycle the bristles are pulled away from the teeth. A position sensitive switch automatically switches from a forward to a reverse operation of the electric motor, depending on the positioning of the toothbrush in a user's hand, allowing the user to brush both the upper and lower teeth using a stroke carrying the bristles from the gum line to the ends of the teeth, as is recommended by dental professionals, without having to move the toothbrush from hand to hand or manually move the switch from the forward to the reverse positions. A bridge pad engages the face of the teeth, maintaining a proper distance between the teeth and bristles during the elliptical rotation of the brush head.

The invention discloses multihead synchronous or asynchronous carving (drilling) milling numerical control processing equipment which comprises a portal frame, a lathe bed, a numerical control unit, a transmission system and x-axle, y-axle and z-axle guide rails, wherein the numerical control unit comprises an x-axle drive motor, a y-axle drive motor and a z-axle drive motor which are arranged on the portal frame. The multihead synchronous or asynchronous carving (drilling) milling numerical control processing equipment is characterized in that left and right sides of the portal frame are respectively provided with two y-axle guide rails, and the portal frame is also provided with 2-6 independent synchronous or asynchronous power heads and multiple sets of tools matched with the power heads, a lathe generates a three-dimensional processing figure by using a computer, the computer controls each power head respectively for processing after processing coordinates are input, a corresponding control system is provided with a servo motor or a stepping motor, the power heads move on the three guide rails along the x-axle direction, three points are fixed; and a screw or rack structure is adopted in the transmission system. The multihead synchronous or asynchronous carving (drilling) milling numerical control processing equipment has the advantages of simple structure, low cost, high processing accuracy, good stability, high processing efficiency, wide application range and the like.