55results about How to "Overcome static friction" patented technology

A delivery system utilizes a handle assembly including an actuating mechanism capable of initially providing sufficient mechanical advantage to overcome static friction when initiating deployment of the medical device. The actuating mechanism includes components which help to increase the speed of deployment as the physician continues to manipulate the actuating mechanism.

An onboard system for use in measuring, computing and displaying the weight and center-of-gravity for aircraft, while keeping aircraft movement to a minimum. Pressure sensors are mounted in relation to each of the landing gear struts. A motor and rotating seal are configured into each strut and are activated by a computer/controller, while landing gear strut pressures are monitored in the determination of strut stiction. The computer/controller calculates the stiction of each landing gear strut and compensates for the pressure distortions caused by landing gear strut stiction. Additional features include reducing strut stiction, measuring landing gear strut fluid levels, monitoring landing gear strut health, weight adjustments for external ice and de-icing fluids, weight adjustments for wind, monitoring aircraft landing gear strut movement.

The invention relates to a substrate support apparatus ( 41 ) for use in a position measuring device ( 1 ) for determining the position of a substrate ( 30, 45 ) supported by the substrate support apparatus ( 41 ) by means of a laser interferometer system ( 29 ), wherein the substrate support apparatus ( 41 ) comprises a traversable stage construction ( 26, 42 ), and a stage mirror ( 9, 43 ) fixedly associated with the stage construction for reflecting a laser beam of the laser interferometer system, wherein it is suggested that the measurement-critical components, associated in a spatially fixed way, of the substrate support apparatus ( 41 ) in the combination of elements ranging from the stage mirror ( 9, 43 ) to the substrate ( 30, 45 ) are of material structures having moduli of elasticity which differ from that of the substrate ( 30, 45 ) by not more than 15%. As a result, the negative effects of air pressure fluctuations on the laser-interferometric position measurement can be greatly reduced.

A flow control valve includes a body having a body bore oriented coaxially with a longitudinal axis of the body and a seat member extending into the bore. A valve member is slidably disposed in the bore and oriented coaxially with the longitudinal axis of the body. The valve member includes a non-circular geometrically shaped head having a bore. A drive adapter includes a head receiving cavity slidingly receiving the geometrically shaped head of the valve member and preventing axial rotation of the valve member. A stepper motor is connected to the drive adapter, the stepper motor incrementally rotating a shaft engaged with the bore of the valve member. First and second equal diameter pistons of the valve member provide pressure balanced valve member operating positions.

The invention relates to a powdery and granular material tank car telescopic charging pipe with a positioning guiding function. The charging pipe comprises a charging pipe body; the charging pipe body comprises an outer casing pipe, a middle casing pipe and a conical discharging pipe; the wide end of the conical discharging pipe is connected with the lower end of the middle casing pipe through a deformable lower soft connecting pipe in a sealed manner, and the conical discharging pipe is communicated with the outer casing pipe through a lower soft connecting pipe; a telescopic driving mechanism for driving the middle casing pipe to stretch in and draw out in the outer casing pipe is arranged outside the outer casing pipe, and when the telescopic driving mechanism drives the middle casing pipe to stretch in and draw out in the middle casing pipe, the conical discharging pipe can synchronously move along with the middle casing pipe so as to enable the conical discharging pipe to be away from or close to the outer casing pipe; and when the telescopic driving mechanism drives the middle casing pipe to stretch out of the interior of the outer casing pipe, the narrow end of the conical discharging pipe can stretch into a feeding opening of a tank car. The powdery and granular material tank car telescopic charging pipe is compact in structure, the tank car can be effectively guided to be in place, it can be ensured that the tank car can be rapidly in place, personal safety hidden troubles are removed, the car loading time is shortened, and safety and sanitation of food can be ensured.

A motor-driven mobile device has an inertial drive which overcomes static friction between the device and a surface by inertial mass movements and resulting inertial forces in specific phases and recycling the inertial mass movements in other phases, without the static friction being overcome. A unit for regenerating the mobile device and a method for moving the device over a surface, are also provided.

The invention provides a start control method of a multi-gear motor in an indoor fan of an air conditioner. The start control method of the multi-gear motor in the indoor fan of the air conditioner comprises the following steps that a, when the multi-gear motor in the indoor fan needs to be started at the lowest gear under the control of the air conditioner, a controller of the air conditioner firstly controls the multi-gear motor to operate at a high gear for 0.1-5 seconds, and specifically, the number of gears of the multi-gear motor is three or more; when the number of the gears of the multi-gear motor is three, the controller of the air conditioner firstly controls the multi-gear motor to operate for 0.1-5 seconds at the second gear, and the first gear is the lowest gear; and when the number of the gears of the multi-gear motor is larger than three, the controller of the air conditioner firstly controls the multi-gear motor to operate for 0.1-5 seconds at the third gear, and the first gear is the lowest gear; and b, then the controller of the air conditioner controls the multi-gear motor to be switched to operate at the lowest gear. According to the start control method of the multi-gear motor in the indoor fan of the air conditioner, on the premise that the using comfort of a user is guaranteed, and the situation that normal starting cannot be achieved when the multi-gear motor is started at the lowest gear can be effectively avoided.

A device for removing a file fragment lodged within a root canal of a tooth may include: a flexible shaft configured for insertion into the root canal; a plurality of prongs extending from the distal end of the flexible shaft; a concentric shaft slidable upon the flexible shaft and configured to contact and move the prongs into contact with the file fragment; and a device to create and deliver vibrations at an intensity configured to cause local melting of the plurality of prongs in contact with the fragment, for welding of each of the prongs to the fragment. Counter-rotation of the shaft and fragment may cause it to be dislodged from the canal. Prior to using the device, the root canal may generally be enlarged using a drill, and an umbrella drill is used to form an opening around the coronal end of the fragment to expose a portion thereof.

A lever-releasable first electrical connector body includes a housing that includes a set of electrical connectors and a lever rotatably mounted in the housing for rotation between retracted and extended positions. When the first connector body is engaged with a second electrical connector body to form electrical connections with the set of electrical connectors, the lever is normally in the retracted position. Rotation of the lever to the extended position causes an end of the lever to engage and urge the second electrical connector away from the first electrical connector.

The embodiment of the invention provides a demounting device. The demounting device comprises a guiding part, an impacting part and a limiting part; the limiting part is fixed together with the limiting end of the guiding part; the impacting part is arranged on the guiding part in a sleeving manner, and can do reciprocating motions along the guiding part; under a using state, the locking end of the guiding part is fixed together with equipment to be demounted, the impacting part is moved to the direction of the locking end of the guiding part, the impacting part is used for increasing the impact force of the limiting part of the impacting part, so as to carry out demounting operation on the equipment to be demounted. According to the technical scheme provided by the invention, through impacting force caused by that the impacting part quickly slides and strikes the limiting part, static friction force caused by the connection of a blind matching component equipment and a machine frame,or relatively large friction force caused by inclination when a relatively heavier component equipment slides on a long distance pathway, are overcome. Therefore, the demounting of the blind matchingcomponent equipment is facilitated, the maintenance and repair time is shortened, and the labor cost is lowered.

A beam control apparatus consists of an electromagnetic field control component, which has a spherical cavity encircled by a transparent spherical shell, and a beam directing component which is spherical in shape and located in the spherical cavity. The two components can rotate relative to each other. A clearance between the two components could be filled with lubricant. The beam directing component has a magnetic moment or an electric dipole moment. A controller controls a magnetic field or an electric field in the spherical cavity of the electromagnetic field control component to exert a torque on the beam directing component to control a direction of the beam directing component, thereby controlling a direction of an emergent beam. The present invention is a new terminal technology for free space optical communications, laser scanning, unmanned driving, laser beam driving and location identification.

The invention discloses an energy accumulation type high-speed and high-acceleration tester which is particularly suitable for a field needing to reach a high-speed test in extremely short time. The tester is characterized by comprising a high-speed main engine part, an energy accumulation driving and clutching part and an axial vibration absorption and acceleration part. By using a driving manner of combining an energy accumulation mechanism with a static abrasion eliminating mechanism, an energy accumulation motor can drive an energy accumulation flywheel group (comprising a friction wheel) to a certain range above a target rotary speed and then an axial vibration absorption and acceleration mechanism is rapidly pressed, so that instant acceleration can be realized by energy and rotary speed transmission; and main energy and friction energy are provided for a test piece part, and an auxiliary motor provides initial static abrasion eliminating energy.

The present invention discloses an apparatus and a method for overcoming hydrostatic level gauge static friction force and improving precision. The apparatus comprises a power source assembly, wherein the power source assembly is a liquid level, float, connection rod or liquid storage barrel drive assembly, and is used for driving between the float (3) and the inner wall of the liquid storage barrel (2) or the connection rod (5) and the meter (1) so as to overcome static friction force and generate relative motion. According to the present invention, the power source is additionally arranged on the hydrostatic level gauge, the power source drives the liquid level, the float, the connection rod or the liquid storage barrel, and the static friction force between the float and the inner wall of the liquid storage barrel is overcome to generate the relative motion, such that the float can really reflect the liquid level change in the barrel, and the measurement accuracy (the precision can achieve about 0.02 mm) of the hydrostatic level gauge can be improved; and the power source drives the liquid level, the float, the connection rod or the liquid storage barrel, such that the connection rod can move, the snapping problem possibly occurring between the connection rod and the displacement meter can be solved, the float can move, the liquid level change in the barrel can be really reflected, and the measurement accuracy of the hydrostatic level gauge can be improved.

A method for shifting a gear in a synchronizer comprising a synchronizer body arranged on a transmission shaft, a first and a second synchronizer associated to a first and a second transmission gear, wherein the synchronizer has a sliding sleeve and at least one thrust piece which is shiftably arranged on the synchronizer body and can exert an axial compressive force on the corresponding synchronizer ring. The synchronizer includes an elastic actuating element active between the sliding sleeve and the thrust piece, and the sliding sleeve has a detent recess for the neutral position and a release contour that can cooperate with the actuating element such that when the sliding sleeve is shifted for being engaged with one of the transmission gears, the thrust piece is urged away from the corresponding synchronizer ring.

The invention relates to a gear and gate (XY) actuator device for a gearbox, comprising a main gear axis that extends parallel to the direction of the rotational axis of the selectable shafts, the direction thereof being subsequently referred to as the X direction. A desired gear is engaged using a shift finger (10) that can be displaced in the X direction along said main gear axis. The gearbox comprises at least two linear shift guides (20, 22, 24) which extend in the X direction parallel to the main gear axis and with which said shift finger (10) can engage, in order to select a specific linear shift guide, a shift rod (12) which can be translationally displaced in the direction of the main gear axis, the shift finger (10) being mounted on said shift rod (12) for conjoined axial and/or rotational movement such that a desired gear can be engaged by displacing the shift finger (10) and a linear shift guide is selected by rotating the shift finger (10) in relation to said linear shift guides (20, 22, 24).