180results about How to "Reduce rotational friction" patented technology

A miniature hydro-power generation system may produce electric power from a flow of liquid. The miniature hydro-power generation system may include a housing that includes a plurality of paddles positioned to extend outwardly from an outer surface of the housing. The system may also include a nozzle and a centering rod extending through the housing. The housing may rotate around the centering rod when a stream of liquid from the nozzle is directed at the paddles. A generator that includes a rotor and a stator may be positioned within a cavity of the housing. The rotor may be coupled with the housing and the stator may be coupled with the centering rod. The rotor may rotate around the stator at high RPM to generate electric power when the housing rotates. The electric power may supply a load and / or may be stored in an energy storage device.

A magnetic arrangement is described for an implantable system for a recipient patient. An implantable coil housing contains a signal coil for transcutaneous communication of an implant communication signal. Freely rotatable within the coil housing is a cylindrical implant magnet for transcutaneous magnetic interaction with a corresponding external attachment magnet. The implant magnet has a central cylinder axis of symmetry, and a magnetization direction along a magnetic axis angled away from the axis of symmetry at a non-zero angle less than 45 degrees.

A dipper including a dipper door and an impact actuated jaw having a “C” shape defining a lip and a chin The jaw is rotatably mounted on the dipper door for rotation between a door-opened position and a door-closed position and positioned so that when the jaw is in the door-opened position, the jaw chin can be impacted by the dipper body when the door pivots to the door-closed position. The dipper also includes a hold open mechanism for releasably holding the door latch in the latch open position when the latch is in the open position, and a locking mechanism for releasably locking the latch when the latch is in the door-closed position. The locking mechanism includes one bar pivotally attached to the door, and another bar pivotally connected to and extending between each of the one bar and the latch.

A prosthetic limb has an outer surface that is a mirror image of an intact limb or a generic limb design. The intact limb is scanned and the surface data is manipulated to create a virtual mirror image. If generic data is used, the intact leg can be measured and the generic surface can be adjusted so the prosthetic limb appears similar to the intact limb. The end of the amputated limb is also measured to obtain socket data. A knee and foot are incorporated to form a virtual prosthetic limb represented by design data. The design data for the virtual prosthetic limb is forwarded to a rapid prototyping machine that fabricates the entire leg simultaneously. Once completed, the prosthetic limb is shipped to the patient.

A toilet tool storage device for providing accessible and transportable storage for a tool having an implement and a handle is disclosed. The device includes a first shell and a second shell. The first shell has an inner surface defining a receptacle sized to house the implement and an outer surface defining a first opening. The second shell is rotatably engaged to the first shell and has an outer surface defining a second opening. The second shell is rotatable between a first position and a second position. In the first position, the first opening and the second opening are cooperatively aligned to provide access to the receptacle so that the tool may be moved in or out of the receptacle. In the second position, the outer surface of the second shell and the first opening are cooperatively aligned prohibit access to the receptacle, thereby enclosing the implement.

A fishing reel including a housing having a central hub and a main shaft having a proximal end and a distal end, the main shaft being non-rotatably fixed to the central hub at its proximal end. A spool having a central recess is releasably secured to the main shaft distal end and a one-way clutch having a central bore is non-rotatably received in the central recess. The reel also includes a drag assembly with a drag housing having a drag surface and a central aperture, the drag housing being fixed to the central hub of the housing such that a drag cavity is formed therebetween. A sleeve extends along the main shaft and has a first portion received in the central bore of the one-way clutch and a second portion extending into the drag cavity. A first drag washer is disposed in the drag cavity and non-rotatably fixed to the second portion of the sleeve and a drag knob is rotatably secured to the housing. Rotation of the drag knob in a first direction urges the drag washer axially along the sleeve toward the drag surface and increases rotational frictional force on the first drag washer. Rotation of the drag knob in a second direction reduces rotational frictional force exerted on said first drag washer.

A rotary joint for use in directional control of a subterranean rotary steerable drilling apparatus. The rotary joint is formed by mated spherical-shaped sockets, each of which is connected with a hollow rod. By virtue of this arrangement, a continuous passageway is provided for fluid to flow through the rotary joint, which fluid may be used for cooling the rotary joint during operation of the rotary steerable drilling system.

An improved structure for rotational support for a heat-dissipation fan is disclosed, comprising a hollow ceramic bearing passing through and concentric with the fan rotor and rotating with said rotor, a hollow ceramic support bearing fixedly mounted to the base of the fan, and a hollow or solid ceramic axle tube passing through the inside of said bearing and rotating freely to reduce friction and allow high-speed rotation. The exterior surface of said bearing is ground or otherwise formed to provide better connection with the rotor, while the interior of the bearing and exterior of the axle tube are further processed to reduce contact area therebetween to reduce rotation friction. This improved structure has achieved reduced friction, reduced noise, reduced power consumption, longer life and higher rotational speed.

A lift sub handling assembly for gripping, handling and maneuvering a lift sub or other tubular member. A yoke member defining a slot is rotatably attached to a lifting frame which, in turn, can be suspended from a hoist, winch or other lifting device. A gate can be selectively opened to a lift sub or other tubular member to be received within the slot, and thereafter closed to secure the lift sub or other tubular member in place. A motor can selectively rotate the yoke member relative to the lifting frame, thereby changing orientation of a lift sub or other tubular member held within the slot.

A hybrid electric drive system for a vehicle comprises a combustion engine (1), a transmission (2), a first clutch (3) disposed between the engine (1) and the transmission (2), a rotating electric machine (4) which serves as a motor as well as a generator, a second clutch (30) disposed between the rotating electric machine (4) and the transmission (2), and a storage device (9). When the second clutch (30) is commanded to connect the rotating electric machine (4) to the transmission (2), a control unit (10) controls the rotating electric machine (4) so as to decrease the difference between the rotation speeds of the rotating electric machine (4) and the transmission (2) (S2) and cause the second clutch (30) to connect the rotating electric machine (4) to the transmission (2) only after the difference decreases to a allowable value (S3, S4).

A parking-brake operating mechanism is provided with an adjusting spindle, a cam shaft to which a parking lever is connected, and a thrust transmitting assembly disposed between the cam shaft and the adjusting spindle. The thrust transmitting assembly includes a rolling roller which can roll between the cam shaft and the adjusting spindle. Rolling curved surfaces are provided respectively at the cam shaft and the adjusting spindle. The rolling roller is disposed in contact with the rolling curved surfaces.

The invention discloses an ultrasonic water immersion automatic detection device and method for complex ring forgings. The method comprises the steps of: placing a to-be-detected complex ring forgingin a water tank, carrying out the single detection of a complex curved surface through an ultrasonic phased array, and carrying out the regional detection of a flat end surface through a multi-frequency array water immersion probe according to the detection depth; during detection of complex curved surfaces, determining the optimal emission dynamic aperture array center and the array element number of each detection region according to a dynamic aperture emission focusing method; determining array emission delay time of each region according to a curved surface multi-medium emission focusing delay time calculation method, and calculating delay superposition time of all sampling points of each region according to a dynamic received beam synthesizer delay algorithm; during detection of the flat end face, selecting array water immersion probes of various different frequency models, and achieving full-coverage detection of the end face of the ring forging. A complete water immersion methodis adopted, the problem of poor coupling is solved, and full-coverage ultrasonic nondestructive testing can be achieved.

The invention relates to a piping device, a domestic sewage pipe anti-blocking device include brackets, ring fence, Impeller knives, shafts and motors, a torque limiter is fixedly connected to the center of rotation of the annular fence, a limit bar is arranged on that annular fence, Bracket and fixed connection, shift lever is arranged on that bracket, a tension spring is connected between the bracket and the ring fence. The impeller cutter sleeve is fixedly connected with the transmission shaft, an overrunning clutch is arranged at the end of the transmission shaft along the water flow direction, a driven bevel gear is fixedly connected with the star wheel of the overrunning clutch, a motor is fixedly connected with a pipeline, and a driving bevel gear is fixedly connected with the shaftend of the motor, and the driving bevel gear is meshed with the driven bevel gear. The domestic sewage pipe anti-blocking device with the above structure intercepts the garbage together for centralized treatment, accelerates the flow velocity of the water while cutting the garbage, plays the role of scouring and cleaning the inner wall of the pipe, accelerates the garbage transportation, and prevents the garbage from accumulating again.

The invention relates to the field of automatic machining, in particular to an automatic lathe provided with a feeding function and used for turning threads. The automatic lathe comprises a lathe headand a lathe body; a three-jaw chuck is arranged on the side wall, close to the lathe body, of the lathe head; a lifting assembly is arranged on the side of the three-jaw chuck so as to lift workpieces on a feeding mechanism; the feeding mechanism comprises a lifting rod, a rotating assembly and a clamping assembly; a driving mechanism is arranged at the top of the lathe body; and the driving mechanism comprises a horizontal sliding assembly, a longitudinal sliding assembly, a transverse sliding assembly and a propelling assembly. The automatic lathe provided with the feeding function and usedfor turning threads can automatically turn threads on the workpieces, meanwhile, a feeding function is achieved, the distance of a turning tool can be adjusted according to machining requirements soas to meet requirements of different screw pitches, different screw thread depth and different thread length, and the fatigue degree of workers is reduced meanwhile the production efficiency is improved.

A grinder comprises a bearing track and a plurality of bearing elements such as ball bearings or roller bearings. Optionally, the bearing elements are protected from fouling or contamination from the material being ground, which can be, for example, herbs, spices, tobacco, or cannabis.

A seed meter for an agricultural seed planter, wherein the seed meter includes a rotating distributing seed disk defining a plurality of radially spaced apertures. The seed disk or drum is operatively connected to a vacuum source for creating a pressure differential between the exterior and the interior of the seed disk so as to pick up seeds for dispensing. Secured to the exterior surface of the seed disk are a plurality of arm members made from a resilient, yet rigid material, such as spring steel, which include an end portion defining an aperture that is positioned over a corresponding aperture formed about the periphery of the seed disk. As the drum is rotated through a supply of seeds, individual seeds are urged onto the apertures of the arm members and corresponding seed disk apertures, and held in place by the vacuum. A lifter mechanism mounted with a frame and including an end that engages at least the portion of the seed disk or drum defining the seed apertures causes the radial outward end of the arm members to be urged away from the surface of the seed disk as the disk is rotated relative to the end of the lifter so that the seed held on the arm member is moved away from the vacuum source and communication with the vacuum source is disrupted. The lifter may optionally include a portion that also occludes the aperture in the seed disk, thereby temporarily cutting off the vacuum force from the individual seed entirely. The lifter in conjunction with a vacuum breaker plate may also physically dislodge any seed or debris not previously removed. As the seed disk continues to rotate, the arm members are disengaged from the lifter such that the arm members are allowed to return to the position where the apertures in the arm members and seed disk are again overlaid.

The present invention relates to an electric water pump having improved performance and durability. The electric water pump may include a stator generating a magnetic field according to a control signal, a rotor rotated by the magnetic field, a pump cover having an inlet and an outlet, a body having a front surface forming a volute chamber, a stator chamber, and a rotor chamber, the stator mounted in the stator chamber and the rotor mounted in the rotor chamber, a shaft having a central axis, fixed to the rotor and mounted in the rotor chamber, and an impeller fixed to the shaft so as to rotate together with the shaft, pressurizing the coolant having flowed in through the inlet, and mounted in the volute chamber, wherein the rotor chamber is fluidly connected to the volute chamber, and the stator chamber is fluidly closed and sealed from the rotor chamber.

An electric water pump may include a stator generating a magnetic field, a rotor rotated by the magnetic field, a pump cover, a body having a volute chamber with the pump chamber, a stator chamber and a rotor chamber, the stator being mounted in the stator chamber and the rotor being mounted in the rotor chamber, a shaft fixed to the rotor, an impeller fixed to the shaft in the volute chamber, a driver case mounted at a rear end of the body and having a rear surface opened backward and formed of a driver chamber therein, and a driver mounted in the driver chamber and applying a control signal to the stator, wherein the case surface is provided with an insert portion protruded forward from an external circumference thereof and inserted in a rear end portion of the body, and a fixing groove in which the insert portion is inserted.

This invention relates to a kind of electric motor equiped with worm and worm-gear reducer which composed of an elecric motor and a worm / worm-gear reducing mechanism. The pivot of electric motor and worm of the reduce are combined into a single one. On the outer ends of said pivot and worm are equipped, respectively, bearings. It is characterised by that the diameter of the worm is 1.5 times of the diameter of pivot of electric motor. The other end near the pivot is equipped with another bearing. This invention electric motor is compacted with its size while gives out greater output force moment, which increased rigidity and stability and lowered noise and vibration.

A dual-directions braking method of a disc brake, a braking mechanism and applications thereof are applied in fields of automobiles, trains and aircrafts. The dual-directions braking mechanism includes a crankshaft having three concentric sections and two eccentric sections, two friction discs, a friction disc ring and at least a pair of brake calipers and friction pads, wherein the two eccentric sections are respectively provided between each neighboring two of the three concentric sections and mutually disposed at 180°; the two friction discs are respectively provided on the two eccentric sections; the friction disc ring is provided on the main section between the two eccentric sections. Through a translationally rotating friction by the two friction discs respectively with the friction disc ring and with the friction pads of each pair of brake calipers, a backward braking moment and a forward braking moment are simultaneously generated on the main sections, so as to enhance a braking performance twice while keeping a wheel friction load unchanged, compared to conventional backward brakes. An automobile dual-directions braking system including the dual-direction braking mechanism is able to accomplish electronic safety control functions of DABS, DEBD and DESP, and greatly improve transportation safety.

A straight-through rotary valve structure includes: a case having an internal conic receiving space with an opening, a first extension section being disposed at a tip of the receiving space, a second extension section being disposed beside the first extension section; a conic rotary valve block having a pivot shaft and formed with a first hole and a second hole, the first hole communicating with a third hole formed at a tip of the rotary valve block in communication with the first extension section, the second hole communicating with a fourth hole formed on a conic face of the rotary valve block; and an outer cover blocking the opening of the case. The outer cover is formed with a central shaft hole through which the pivot shaft passes. The outer cover is further formed with a first perforation and a second perforation corresponding to the first and second holes respectively.

A slider, includes a slider base, a pull-tab, a connecting shaft and a spring; the slider base includes an upper blade, a lower blade, and a connecting pin connecting the upper blade and the lower blade; said pull-tab is integrated with the connecting shaft; the pull-tab includes a pull-tab body, with a spring mounting part and a locking part set at the anterior-end-face of the pull-tab body; the anterior-end-face of the pull-tab body is set as a locking vertical plane and the bottom of the pull-tab body is set as cambered surface; the connecting shaft is fixed to the anterior-end of the pull-tab body and the length of the connecting shaft is larger than the width of the anterior-end-face of the pull-tab body; the connecting shaft runs through the spring mounting part and the locking part and extends to both sides of the anterior-end of the pull-tab body.

The invention provides a transmission assembly and a lifting vertical column. The transmission assembly comprises a first screw rod, a second screw rod, a third screw rod, a driving device, a first nut which is in transmission fit with the first screw rod, a first sleeve fixedly connected with the first nut, a second nut which is in transmission fit with the second screw rod, a second sleeve fixedly connected with the second nut, a third nut which is in transmission fit with the third screw rod, and a third sleeve fixedly connected with the third nut; the first nut, the second nut and the third nut are fixedly arranged in the circumferential direction, the second screw rod and the third screw rod are hollow, the first screw rod and the second screw rod can rotate synchronously and expand and contract relatively in the axial direction, and the second screw rod and the third screw rod can rotate synchronously and expand and contract relatively in the axial direction; and the four-sectiontransmission assembly achieves driving through rotation of the screw rods, the sleeves are driven by the nuts to achieve expanding and contracting, and thus, transmission of the transmission assemblyis stable and reliable.