43results about How to "Shorten arm length" patented technology

A wireless communication device is configured to provide wireless communication to a host device when disposed in a mated position in a slot having a primary axis and formed in a side face of the host device. The wireless communication device includes a transceiver, a controller in communication with the transceiver, and a modem in communication with the controller. The wireless communication device also includes a balanced antenna in communication with the transceiver and having a polarization axis that is parallel to the side face and to the primary axis of the slot when the wireless communication device is in the mated position.

A wireless communication device is configured to provide wireless communication to a host device when disposed in a mated position with the host device such that a housing of the wireless communication device extends a distance Lid from a face of the host device. The wireless communication device includes a transceiver, a controller in communication with the transceiver, and a modem in communication with the controller. The wireless communication device also includes a dipole antenna having a dipole effective current axis Ix for a selected wavelength λ in the mated position that is at a distance from the face of the host device that is in the range of about 0.09λ to about 0.25λ.

A structural improvement of the canned pump is to improve the stiffness of a stationary shaft and, according to requirement, to dispose a monitor device. The method for improving the stiffness of the stationary shaft includes axially inserting a shaft metal rear support of the metal structural of a motor rear casing of a canned motor into the inner side of a rotor yoke of an inner rotor of the canned motor, tightly attaching the shaft metal rear support to a rear shaft seat for improving the stiffness of the stationary shaft by longer hold length, and for shortening an arm length of the composite force. The monitor device, used for detecting the wear of a bearing for enhancing the reliability and satisfying the driving requirement, is installed in the ring slot to be protected by the rear shaft seat.

A site light includes a body, an arm coupled to the body having an adjustable arm length, a light assembly coupled to the arm opposite the body, and a drive mechanism with a crank arm rotatable about a first axis. Rotating the crank arm in a first direction causes the arm length to increase. Rotating the crank arm in a second direction causes the arm length to decrease. The drive mechanism is adjustable between a first configuration, where the crank arm can only rotate in the first direction, and a second configuration, where the crank arm can be rotated in the first direction and the second direction.

The invention provides a harmonic reducer with a short barrel-shaped flexible wheel. A wave generator is arranged in an inner hole of the flexible wheel (18), and outer teeth of the flexible wheel (18) are engaged with inner teeth of a rigid wheel (6); the rigid wheel (6) is fixedly connected to a spigot inner hole of a housing (16) through a pin (8), a spring gasket (19) and a bolt (20); the flexible wheel (18) and a low-speed shaft (15) are fixedly connected together through a bolt (10) and a spring gasket (11); the wave generator and a high-speed shaft (1) are fixedly connected together through a key (9), and are axially positioned through a shaft elastic retainer ring (3); finally, a bearing (2) and a bearing (12) are arranged at the two ends of the high-speed shaft (1) respectively, so that the wave generator realizes axial positioning motion and radial positioning motion; the high-speed shaft (1) and the low-speed shaft (15) realize linear coaxial transmission. The harmonic reducer disclosed by the invention is reduced in size and weight, and can be used for realizing relatively large torque transmission output.

The invention relates to an all-optical logic gate with a Michelson structure, which can be reused for realizing an AND gate, an OR gate, an NOT gate, an NAND gate, an NOR gate, an XOR gate and an XNOR gate as well as the reverse operation thereof, and also realizing a half-adder. The all-optical logic gate with a Michelson structure comprises two control optical signals, a synchronous optical detection signal and an output detection signal, wherein the two control optical signals are input into an arm (2) of symmetrical Michelson interferometers by a coupler (1); the synchronous optical detection signal is divided into two beams of equal light to be projected into the arm (2) and an arm (3) of the Michelson interferometers and used for outputting a reflecting output opening (4) for expressing the application of the logic result and a transmitting output opening (5) of the reverse operation; the output detection signal is results of the self-phase modulation of a detection optical signal, the intersection phase modulation of the two control optical signals on detection light and average intersection phase modulation on the detection light in two times of arm length and is expressed into a corresponding logic gate relation. The all-optical logic gate has the characteristic of self-phase modulation in the symmetrical Michelson interferometers, preferably the two arms adopt different nonlinear optical fibers and the input arm (2) of the control optical signals adopts a high nonlinear optical fiber.

A link plate for silent chains includes a pair of teeth, each formed of an inside flank and an outside flank and a pair of pin apertures. A moment of force around a pin M=F×Lo, where F is a force applied by a sprocket tooth against the outside flank, and Lo is a length of a perpendicular drawn from a center O of a pin aperture to an action line of the force, is decreased by decreasing Lo. The link plate engages a sprocket tooth on an intersection between a straight line n and a flank, line n and the direction of a central line connecting each O forming a pressure angle α, and contacting a circle having a center O and a radius r<0.25×P, where P is a pin aperture pitch. Also, α of the outside flank satisfies an inequality, 32°≦α<34°, to lessen the force.

The present invention relates to a bandage that is designed for use preferably on a digit of a person's foot but that may also be used on the digit of a person's hand or other similar surfaces. In particular, the bandage comprises a body having at least a first side surface, a second side surface, a first end, and a second end. The bandage is designed to have adjustable arms at each of the first and second end so that an arm may be adjusted if it is difficult to wrap the respective arm around the anatomical digit and/or in between the spaces of the anatomical digits.

A medical diagnostic apparatus using X-ray photography and having a length-adjustable arm structure is disclosed. The medical diagnostic apparatus according to the present invention comprises an X-ray generation unit, a first arm moving the X-ray generation unit forward and backward, a detector unit, a second arm connected to the detector unit, and a main body, a vertical drive motor and a rotational drive motor. The second arm comprises a guide rod connected to the main body; a drive motor rotating the guide rod; and a guide groove unit including a guide rod hole which is screw-fitting with the guide rod; a second guide plate disposed on both sides of the guide rod, and a guide rail formed on an inside of the second guide plate; a plurality of rollers to contact with the guide rail, and a guide rail groove to insert the guide rail therein.

The invention discloses a double-layered eight-rotor-wing unmanned aerial vehicle which comprises a body, four upper arms, four lower arms and eight flying mechanisms. The body comprises an upper platform and a lower platform; the four upper arms and the four lower arms are separately arranged on the upper platform and the lower platform; each of the lower arms comprises a first connecting rod, a folding mechanism and a second connecting rod which are successively connected; the eight flying mechanisms are separately arranged on the tail ends of the four upper arms and the four lower arms; each of the flying mechanisms comprises a brushless motor and a rotor wing fixedly connected to the output shaft of the brushless motor; and the rotating ranges of the rotor wings of the eight flying mechanisms are staggered for generating upward lift forces. By adopting a double-layered structure, the arm length of a common eight-rotor-wing unmanned aerial vehicle is reduced, the weight of the structure is alleviated, and the storage space is expanded; meanwhile, the double-layered eight-rotor-wing unmanned aerial vehicle is more stable to control, longer in time of endurance and higher in efficiency, and the safety of inner loads of the body is effectively guaranteed.

An apparatus including a frame; a drive wheel coupled to the frame; first and second foot links operably coupled to said drive wheel to transfer power to said drive wheel so as to propel the apparatus; and each of said first and second foot links including a pivoting foot platform for receiving an operator's foot, said pivoting foot platform pivotally coupled to one of said first and second foot links so as to allow angular travel of the pivoting foot platform, the apparatus including one or more features to limit the angular travel of said pivoting foot platform.

The invention discloses a wire control arm which comprises a drive mechanism, a power wire mechanism and a mechanical arm. The drive mechanism is arranged far away from the mechanical arm; the mechanical arm is formed by serially connecting at least two joint pieces; each two adjacent joint pieces are rotatably connected through a joint wheel; the power wire mechanism comprises coiling wheels corresponding to the joint wheels in quantity; each pair of correspondingly arranged joint wheel and coiling wheel are in tensioning connection through a power wire; and the drive mechanism drives the coiling wheels to rotate, the coiling wheels drive the joint wheels to rotate, and one joint piece rotates relative to the other joint piece arranged adjacently through the corresponding joint wheel. According to the wire control arm provided by the invention, the drive mechanism remotely provides a drive force for the joint pieces of the mechanical arm through the power wires and the joint wheels, so that the weight of the mechanical arm is greatly reduced, the driving moment of the mechanical arm is reduced, and the mechanical arm can realize freedom degrees of more actions.

The invention provides a balanced arm (201) for transferring a fluid product, having a transfer compass comprising an inner transfer member (208) and an outer transfer member (221), articulated together, and a counterweight system (203) for balancing the transfer compass, characterized in that the compass is installed on a turntable (215) rotatable about a vertical axis, to rotationally drive the transfer compass about that axis, and the balancing system comprises at least one counterweight (207; 207′) mounted so as to be able to turn about an axis (206) of horizontal general orientation, on a support (251) fixed to the turntable and functionally linked to the inner transfer member to provide the balancing of the transfer compass.

The invention relates to a lifting and supporting device used for a loader. The lifting and supporting device used for the loader comprises a car body (1), and the car body is connected with a rocker arm (11). The lifting and supporting device used for the loader is characterized in that the front side of the car body is symmetrically connected with two sliding rails (2), a lifting board (3) is connected between the sliding rails and is supported on and fixed to the car body through a first oil cylinder (13), the front side wall of the lifting board is connected with a connection board (6) in a rotary and matched mode, one side of the connection board (6) is provided with a first hinged board (10), and the first hinged board (10) and a second oil cylinder (8) are hinged and matched. The lifting and supporting device used for the loader has the advantages that through mutual matching of the first oil cylinder and the sliding rails, the rocker arm can vertically move, the length of the rocker arm can be decreased, and the stability is improved when the loaders operates; meanwhile, under the action of the second oil cylinder, the rocker arm can rotate by a certain angle, materials at different positions can be picked and placed conveniently, and working efficiency is improved.

The invention relates to a multifunctional electric shredding and slicing device, which comprises a central push rod bushing (101) and an eccentric push rod bushing (201); the central push rod bushing (101) is provided with a Coordinated central feeding port (101B), central push rod bushing (101) is assembled into the feeding barrel (301) for center spiral cutting; eccentric push rod bushing (201) is provided with eccentric push rod (200) The matching eccentric feeding port (201A), the eccentric push rod bushing (201) is assembled into the feeding barrel (301) for eccentric cutting; the feeding barrel (301) includes the center feeding port (101B) after assembly The overlapping central feeding area and the eccentric feeding area overlapping with the eccentric feeding port (201A), the central feeding area communicates with the eccentric feeding area. The present invention can simultaneously have the functions of central spiral cutting and eccentric cutting, and has simple, compact structure and low cost.