521results about How to "Few moving parts" patented technology

Systems and methods analyzing body fluids contain cells including blood, bone marrow, urine, vaginal tissue, epithelial tissue, tumors, semen, and spittle are disclosed. The systems and methods utilize an improved technique for applying a monolayer of cells to a slide and generating a substantially uniform distribution of cells on the slide. Additionally aspects of the invention also relate to systems and method for utilizing multi-color microscopy for improving the quality of images captured by a light receiving device.

The invention discloses an attitude control system for space vehicle and a method thereof. The control system has only one biased momentum wheel, one set of tri-axial magnetic torquer and one attitude controller loaded with algorithm. The method comprises a step of rate damping controlling, a step of initially capturing controlling and a step of stationarity controlling. At the rate damping stage, geomagnetism change is used to control the magnetic control of three passages of a satellite by B-dot; at the initially capturing stage, the magnetic control is realized, PD control is performed by pitching and the passages are rolled and yawed to carry out nutation and precession composite control; at the stationarity controlling stage, the magnetic control is realized, PD control is performed by pitching and the passages are rolled and yawed to carry out nutation and precession composite control. The capturing stage and the stationarity controlling stage fully depend on magnetic torquer to perform positive magnetic control, thereby changing which a satellite only uses a magnetic torquer to carry out unload of the momentum wheel or auxiliary magnetic control, so as to refine system configuration to further improve reliability of the system. Momentum of a satellite is biased to rotate on the ground, so as to ensure stable separation of the satellite without performing air injection control. Therefore, the magnetic torquer can be used for realizing fast and stable initial rate damping.

A fluid control valve having a spring biased shuttle plunger member which opens or closes fluid flow through a plurality of radially spaced apart fluid passageways disposed between an upstream chamber and downstream chamber in the valve body responsive to a fluid pressure greater than the spring force and any differential pressure between the upstream and downstream chambers to prevent fluid from being supplied at a pressure higher than a desired operating pressure and prevent high dynamic differential pressures, such as a “water hammer” or explosive pressure. Alternatively, in a normally closed embodiment, pilot fluid at a pressure greater than the spring force and any differential pressure in the upstream chamber is utilized to open the valve, which is then closed by the spring force.

A cushioning device for a body support such as a mattress, seat, sofa, or the like where support is obtained from a fluid in fluid cells having a spring bias. The cushioning device is self-inflating, self-adjusting, and provides a low interface pressure under the entire contact surface of a patient. Shear force scraping damage is prevented by a sleeve apparatus. A support system apparatus provides separately adjustable pressure support zones. For physical therapy, an alternating pressure system provides alternating lifting and lowering pressure zones under a patient.

A beverage machine having a beverage brewing unit for receiving a single-serve capsule and including a capsule holding assembly for holding a capsule in a position during insertion by gravity of the capsule in the brewing unit; and a water injection assembly for at least partially enclosing the capsule and providing water in the capsule. The capsule holding part forms a front part of the unit and is mounted to the capsule injection assembly in a manner to be displaceable along a substantially horizontal path whereas the water injection assembly is located in a rear fixed part of the unit. The beverage machine has an outermost casing. One of these brewing unit assemblies can be moved or telescoped out or through this casing for inserting / removing the ingredient capsule and retracted into the outermost casing for bringing the brewing unit into its capsule extraction configuration.

A two stage compressor or pump with integral electronically controlled multiphase linear motor incorporates a cup shaped moving piston as a stator. The linear motor body has an intake head with valve fitted at the end adjacent to the closed end of the cup shaped piston. A discharge head with a central discharge tube extending into the hollow center of the cup shaped moving piston is fitted to the opposite end of the motor body. As the piston reciprocates it draws the working fluid in through the intake valve, compresses and transfers it through an interstage valve in the closed end of the moving piston into a second variable volume chamber formed by the inside of the cup shaped piston and the discharge tube which acts as a fixed piston, and then further compresses and transfers it out through a valve in the discharge tube. While the design is particularly well suited for use as a compressor in air conditioning and refrigeration systems, it can also be used as a pump.

The invention discloses a torsional impact drilling tool which can apply high-frequency torsion impact to a drilling bit in the drilling engineering. The technical scheme of the torsional impact drilling tool is as follows: the torsional impact drilling tool mainly comprises a short section of a drill collar, a torsional impact generator and a connecting body, wherein the short section of the drill collar and the torsional impact generator are in clearance connection through the connecting body and are located by splines; a diversion cover is fixed on a hammer seat; a cavity is formed inside the diversion cover; a closure nozzle, a sieve tube, a locating sleeve and an impact hammer are sequentially arranged in the cavity from inside to outside; the sieve tube is fixed with the hammer seat; the impact hammer, the locating sleeve, the sieve tube and the hammer seat are provided with through holes in the circumferential direction; and an impact hammer head and a starting hammer head are processed on the impact hammer. The torsional impact drilling tool is arranged between the drill collar and the drilling bit; and the drilling bit receives the high-frequency torsional impact generated by the impact hammer under the driving of fluids while receiving the rotational torsion of a drill column. Compared with other drilling tools, the torsional impact drilling tool disclosed by the invention has the advantages that the high-frequency torsional impact can be generated, the sticking-sliding phenomenon of the drilling bit is eliminated, the mechanical drilling rate of harder or abrasive formation is increased, the service life of matched components, such as the drilling bit and the like of the drill column is prolonged, the drilling efficiency is improved and the drilling cost is reduced.

An apparatus for packing disposable objects or material into an elongated tube of flexible material. The apparatus defines a bin having a holder adapted to receive a cassette of flexible unfoldable material. A closing mechanism is positioned below the holder. The closing mechanism includes first and second portions. The second portion is biased in a closed position against the first. The second portion has a receiving surface and is slidable from the closed position to an open position through the application of a substantially downward force against the receiving surface and is slidable from the open position to the closed position under the action of a biasing force. The closing mechanism in the open position defines a passage between a top opening of the bin and a bottom portion of the enclosure, and in the closed position closes the passage.

A pre-whirl generating apparatus (26) is provided that employs deformable air deflecting vanes (46) adjacent the inlet (18) of a radial air compressor (12-22), which vanes (46) can be mechanically deformed to generate positive, neutral, or negative pre-whirl flow to the compressor. A minimum number of parts are used to position one or more thin, deformable vanes (46) in the intake channel (34) leading to the compressor inlet (18). In their undeformed position, the vanes (46) do not deflect the incoming air, thereby causing little or no flow restriction. To achieve the desired positive or negative pre-whirl of flow to the compressor (12-22), the trailing edge (62) of the vanes (46) are deflected transverse to the direction of flow in the channel (34) in either the positive or negative direction.

A fluid flow actuated valve for controlling the fluid flow in a conduit comprises a support structure adapted to be mounted within the conduit and at least one flap member pivotally mounted to the support structure. The at least one flap member is pivotable between an first position for a minimum fluid flow and a second position for a maximum fluid flow. A torsion spring is attached to the at least one flap member to urge the same to pivot against a fluid pressure differential, from the first position to the second position when the fluid pressure differential is smaller than a predetermined level.

A compression drain for use with a preformed floor in which the height of the drain grate can be adjusted relative to said floor, and which positively locates the drain housing relative to the subfloor / waste water drain pipe. The arrangement provides a unitary, water tight, assembly that uses very little material to be manufactured, has very few moving parts, and is very easy to install.

A compact well pumping unit actuated by a linear motor with one or more counterweights directly attached to the slider. In one embodiment, two slider units are joined to form a rectangular complex around a two-sided stator track mounted vertically inside of a vertical steel frame. A belt assembly connects the slider complex to the polished rod of the well pump. The belt assembly passes over a first set of pulley wheels mounted on top of the vertical steel frame and a second set mounted on the side of the vertical steel frame. Thus when the slider complex caused to moves up and down, the polished rod of the well pump is actuated by the linear motor.

The invention relates to a roadside parking device without road occupancy, which is characterized in that a lifting parking platform is movably arranged on a single column provided with a vertical guide rail face and driven by a screw rod / nut combined or gear / rack combined lifting device and does a vertical lifting motion along the guide rail face of the column. By adopting the basic structures of single column support and vertical lifting of the parking platform, parking positions can be increased by smartly utilizing greenbelt spaces at roadsides of narrow streets and residential areas and around houses and the like, therefore, the parking without road occupancy is realized, the contradictions of roadside parking and road smoothness as well as the struggle for land with parking and greening are resolved, the dew absorption of plants at night can not be influenced, the adverse influence on the normal greening growth can not be brought, the high-suspension parking security is good, and scratching and stolen damages can be greatly reduced. The threaded-fit screw rod / nut lifting device not only has simple lifting structure and low cost, but also has good parking safety supportability. The parking device has simple structure, low cost and convenient setting.

An enhanced detection system can eliminate use of a sheath fluid by selecting which particles that pass through an sensing region to detect parametric characteristics thereof based upon position of each particle while it is in a sensing region relative to one or more predetermined positions, such as an in-focus position relative to one or more light beams directed into the sensing region, to enhance accuracy and robustness of particle parametric characteristics detection.

A cushioning device for a body support such as a mattress, seat, sofa, or the like where support is obtained from a fluid. The cushioning device is self-inflating, self-adjusting, and provides a low interface pressure under the entire contact surface of a patient. Shear force scraping damage is prevented by a sleeve apparatus. A support system apparatus provides separately adjustable pressure support zones. For physical therapy, an alternating pressure system provides alternating lifting and lowering pressure zones under a patient.

The invention discloses a well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration. By means of the method and device, axial impact vibration can be uniformly applied to a drill bit or a pipe column in the welling drilling process. According to the technical scheme, the device is mainly composed of a body, a pulse generating device and an axial vibration device; the pulse generating device is composed of a guiding object, an impeller seat, impellers and a vibration nozzle; the axial vibration device is composed of a pressure stressed face, a piston portion, a central rod and a disc spring portion; the piston portion is composed of a piston bush, an oil seal and a piston; the disc spring portion is composed of a disc spring upper pressing sleeve, a disc spring adjusting sleeve, a disc spring protecting sleeve, a disc spring set, a disc spring core bar and a disc spring seat. Compared with other well drilling tools, by means of the well drilling method and device, stable and uniform axial vibration can be generated, and frictional resistance generated by 'pressure supporting' in a horizontal well is lowered; when the device is installed between a drill collar and a drill bit, stable and uniform axial force can be provided for the drill bit, and well drilling efficiency is improved.

The relief valve uses a slotted Belleville spring preloaded in a cage. The center area of the spring is closed and presses a hole in the bottom wall of the cage. The top wall of the cage is open and has a ledge against which the radial end of the spring presses. The relief valve is used in a hydraulic tensioner and positioned in the tensioner to have the bottom wall form a wall of the pressure chamber. When the pressure in the pressure chamber exceeds the pressure of the spring against the hole, fluid leaks out of the hole.

A photo acoustic trace gas detector (100) is provided for detecting a concentration of a trace gas in a gas mixture. The photo acoustic trace gas detector (100) comprises a light source (101), an optical cavity (104a, 104b), ratio modulating means (105, 111) and a transducer (109). The optical cavity (104a, 104b) contains the gas mixture and amplifies light intensity. Maximum amplification is provided when a ratio of a wavelength of the light beam and a length of the optical cavity (104a, 104b) has a resonance value. Ratio modulating means (105, 111) modulate the ratio for transformation of the light beam into a series of light pulses for generating the sound waves, an amplitude of the sound waves being a measure of the concentration of the trace gas. A transducer (109) converts the sound waves into electrical signals.

An engine powering device with magnetic components that aid in the operation of piston propelled engines by attaching the device individually to the pistons, causing the pistons to perform the up and down thrusts without the use of fuel combustion thereby mobilizing the engine, eliminating the necessity of fuel and preventing pollution exhausting into the atmosphere. An exemplary system for a magnetically controlled propelled engine that uses exhausted clean air from the engine that flows through an electric generating turbo or turbine to charge the battery to power the engine. Passenger compartment comfort heating is supplied by and electric liquid boiler or liquid heater with a circulation pump. A fuel door mounted universal electrical connector to aid in charging engine battery. This engine has magnetic shielding safety components to protect people and other electronic devices from strong rare earth magnets and electromagnets.

A push button latch includes a housing, an actuator movable along a path substantially axial of the housing and a lock movable along a path transverse to the axial path. A spring biases the lock to a latching position, and structures in the lock and housing inhibit unintended opening of the latch.

A novel sliding door and window operating system is especially conducive for use on sliding patio doors and larger window panels. The system uses a small motor to electrically power and rotate a lead screw enclosed within a casing. A guide block on the lead screw is positioned within an opening, inset into the door or window panel which is to be slideably moved. The motor is actuated by use of a switch. The motor rotates the lead screw which in turn moves the guide block back and forth longitudinally within the casing. As the guide block is located within the inset opening of the door or window panel, as the guide block moves it carries the panel along with it, thus opening and closing the panel.

A fire protection system comprises a supply pipe having a first fluid pressurized to a first pressure and a network of pipes having a plurality of sprinklers. The network of pipes have a second fluid being pressurized to a second pressure at approximately 5.5 times the first pressure. The system further comprises a dry pipe valve including a body defining a passage extending along a longitudinal axis between an inlet coupled to the supply pipe and an outlet coupled to the network of pipes. The inlet has an inlet diameter of approximately WD inches and a seat disposed in the body has a seating surface with a diameter AD approximately less than two times WD inches. The dry pipe valve further includes a clapper pivotable about an axis orthogonal to the longitudinal axis between a first position occluding the passage when the ratio of the second pressure to the first pressure is at least 5.5 and a second position permitting fluid flow through the passage when the ratio is less than 5.5.

The invention discloses a five-coordinate locating mechanism, which comprises an X-direction guide part, a Y-direction guide part, a Z-direction guide part, an A-direction rotating part and a working platform. The structures of the Y-direction guide part and the Z-direction guide part are the same, and moreover, the Y-direction guide part and the Z-direction guide part are arranged in a cross wayto provide the translational movement of the working platform in the X-direction and the Y-direction; the Z-direction guide part provides the translational movement of the working platform in the Z-direction and the rotation of the working platform in the B-direction through the synchronous or the asynchronous movement of Z-direction moving plates at the two sides of the Z-direction guide plate; and the A-direction rotating part provides the rotation of the working platform in the A-direction. The five-coordinate movement of the working platform is realized through mature and reliable structures like screws, guide rails, gear pairs and the like adopted by the five-coordinate locating mechanism. The five-coordinate locating mechanism has good processing and assembling properties, high locating precision, and large bearing capacity. Moreover, five coordinates control the movement in a relatively independent way, and kinematics analysis and solution are simple, therefore, the control is simpler.

The invention provides a vehicle carrying scheme that lifting racks are used for lifting a vehicle above a vehicle top so as to perform leap-type translation in order to solve the problems that existing parking devices with the comb teeth for supporting, storing and withdrawing the vehicle are low in using ratio of the ground, inflexible in application, poor in storing and withdrawing efficiency and the like. Besides, by means of mutually communicated storing and withdrawing rack channels which are distributed below all comb-shaped parking racks of a parking queue, comb-shaped storing and withdrawing racks of carriers can directly and rapidly move and operate between each comb-shaped parking rack and vehicle storing and withdrawing port, the process of lifting and putting the road vehicle to a garage can be simply finished by the aid of comb-shaped lifting racks which are arranged at positions of the vehicle storing and withdrawing ports, a system is effectively simplified, and the efficiency is increased.