206results about How to "Close fast" patented technology

The invention relates to a medical-technology valve device for suction and/or flushing lines of medical instruments, particularly instruments for endoscopic surgery, having a valve housing equipped with a through bore-hole and having a valve body, movably positioned in the valve housing, by which valve body the through bore-hole can be locked and opened again, and where the valve body is configured as a piston that can be displaced essentially perpendicularly to the through bore-hole by means of a servo drive, so that a rotary movement of the servo drive can be transformed into an axial movement of the piston. To produce a medical-technology valve device that makes possible a reproducible adjustment of the flow volume that is to be regulated, while allowing a reduction of turbulence, it is proposed with the invention that the servo drive is configured as a hand lever that can rotate around the longitudinal axis of the piston and can be displaced to move the piston from the position that frees the through bore-hole into the position that closes the through bore-hole by an angle of 90 degrees with respect to the longitudinal axis of the piston.

PCT No. PCT/DE98/00945 Sec. 371 Date Jun. 30, 1999 Sec. 102(e) Date Jun. 30, 1999 PCT Filed Apr. 3, 1998 PCT Pub. No. WO99/15783 PCT Pub. Date Apr. 1, 1999A fuel injection device for internal combustion engines is proposed in which a fuel injection valve is controlled by the pressure in a pressure chamber, which acts on a pressure shoulder in its opening and closing direction. The pressure supply to the a pressure chamber is controlled by a control valve member which in turn is moved by a pressure in a working chamber. The pressure in the working chamber is controlled by a pre-control valve which has a closing body which, through the influence of the piezoelectric drive mechanism, is moved from a second valve seat to a first valve seat and thereby momentarily opens a relief line of the working chamber. This movement results in an opening of the control valve member and a supplying of high fuel pressure to the pressure chamber for purposes of injection. Thus a very small pre-injection quantity is produced. In order to produce a main injection quantity, the closing body is positioned in an intermediate position between the valve seats and a longer connection of the high-pressure fuel supply to the pressure chamber is consequently produced.

An improved clamp structure includes a workbench, and the workbench has a quick release unit that can be turned linearly and a baffle board. A front clamping board and a rear clamping board are disposed between the quick release unit and the baffle board. An axial rod connects the front clamping board and quick release unit, and two guiding rods penetrate through the front and rear clamping boards to assist the sliding of the front and rear clamping boards. A link rod module is installed separately on the left and right walls of the front and rear clamping boards for controlling the quick release unit, such that when the axial rod drives the front clamping board to move, the front clamping board can be linked to the rear clamping board by the two link rod modules, so as to define corresponding quick opening and closing movements between the front and rear clamping boards.

Provided is a vapor phase decomposition (VPD) device for a semiconductor wafer pollutant measurement apparatus and a door opening and closing device thereof. The VPD device includes: a rectangular vessel-shaped main body of the VPD device and a door which covers in a sealed form or opens the wafer inlet of the VPD device. Here, a predetermined space is formed in the inner portion of the rectangular vessel-shaped main body, support plates are formed on the bottom of the rectangular vessel-shaped main body and gas discharge and suction nozzles are located therein. In addition, a transparent see-through window is formed on the upper surface of the rectangular vessel-shaped main body, a detection electrode for controlling an inner atmosphere is formed at the center of the transparent see-through window, and one side surface of the rectangular vessel-shaped main body is opened to thus form a wafer inlet for introducing a wafer. The door opening and closing device includes: a forward and backward movement unit having cylinder loads, air cylinders, and plates, to make the door move forward and backward in order to open and close the wafer inlet of the main body of the VPD device; and an ascent and descent movement unit having a fixed plate, guide bars, a slide block, and a cylinder.

A compressor bypass valve for multistage supercharging an internal combustion engine equipped with a supercharging system. The valve includes a displacement body accommodated in a valve housing. The displacement body is divided into a first displacement part and a second displacement part. The first displacement part, facing the upstream side, moves to close or open the bypass in response to a pressure differential.

Improvements to a portable fire extinguisher are disclosed. The improvements allow for frequent and simpler untrained and automatic self-servicing of a fire extinguisher. The improvements include an anti-bridging mechanism that can be articulated from the exterior of the chamber to fluff, mix or stir the powder within the chamber to keep it in a liquefied state. Additional improvements include a larger opening to more quickly fill and inspect the powder within the chamber. Another improvement includes the use of a CO₂ canister located external to the chamber to allow easier servicing or replacement of just the CO₂ canister as well as the ability to maintain the chamber in an un-pressurized condition, allows for non-HASMAT shipping. These features will extend the service intervals while maintaining the fire extinguisher in a ready condition.

A method and apparatus are disclosed for the 3-dimensional analysis of movement of tooth surfaces of the maxilla (MX) in relation to the mandible (MN), comprising a measurement system for determining the movement of two solid bodies in all degrees of freedom by means of electronic measurement sensors. A measurement MX-sensor is mounted with respect to the maxilla and a measurement MN-sensor is mounted with respect to the mandible, and the positions of the measurement sensors are recorded continuously during the performance of mandible movements.

The discharge chute opening and closing apparatus for lawn mowers comprises a vertical bar fixedly attached to a pivot bar, rotatably mounted between first and second pivot stanchions; a pivot arm fixedly attached to the pivot bar at a first end and engaged with a cam pin at a second end; a cam plate comprising a cam pin and a drive pin, rotatably attached to a third pivot stanchion; a lift plate rotatably attached to the third pivot stanchion and fixedly attached to a chute door being operably engaged by the cam and drive pins; a second lift plate fixedly attached to a fourth pivot stanchion further comprising a spring attachment; a spring attached at a first end to the spring attachment of the lift plate and attached at a second end to a spring mounting bracket wherein the spring assists in maintaining the position of the chute door.

The present invention is a handheld grinding mill. The handheld grinding mill of the present invention is operated by first removing the grinder knob and screw off cap to expose the interior chamber of the body, where the desired spice would be place for grinding. Once the body is loaded with the desired spice, the cap and knob are attached. To open and close the aperture, the shutter-actuating ring is rotated either clockwise or counter clockwise, placing the doors in either a closed or open position, as desired. To grind and dispense spices loaded in the body of the mill, the actuating ring is rotated to retract the doors and open the aperture and the knob is rotated, which results in a rotation of the grinder and dispensing of the spice through the aperture.

Provided is a superspeed heavy current LIGBT, relating to the semiconductor power device. The superspeed heavy current LIGBT comprises a silicon substrate, and a drift region, a channel region, an ohmic contact heavily doped region, a cathode, a grid medium, an anode leading-out wire, a grid, a cathode leading-out wire and an anode which are all arranged above the silicon substrate and buried oxide. The drift region is provided with an electric field strengthening unit on the upper surface of the portion between the anode and the channel region; and the electric field strengthening unit is used for generating an electric field pointing to the lower surface of the electric field strengthening unit from the anode, and is isolated from the drift region through an insulating medium. The superspeed heavy current LIGBT improves the conduction performance and switching performance of an LIGBT device.

A plate heat exchanger comprising a set of heat exchanger plates arranged between a frame plate and a pressure plate. A guide bar guides the set of heat exchanger plates and the pressure plate relatively the frame plate, a tightening member is arranged on the guide bar and a plate engager is arranged intermediate the tightening member and the pressure plate for allowing the tightening member to press the pressure plate in a direction towards the frame plate. The plate engager is releasable and the tightening member is configured to protect the guide bar, such that the pressure plate may move in a direction from the frame plate and past the tightening member when the plate engager is released. A related method is also described.

Methods and an apparatus for providing an intrinsically safe chamber door for a processing chamber capable of operating at high pressures are provided. One exemplary apparatus includes a processing chamber for a substrate where the chamber is configured to operate at a positive pressure. The processing chamber includes a port loading slot for providing access for the substrate into and out of the chamber. A chamber door positioned inside the chamber is included. The chamber door is configured to seal against an internal surface of the chamber thereby blocking access through the port loading slot. An internal pressure of the chamber assists in sealing the chamber door against the internal surface of the chamber. Also included is a door actuating mechanism configured to move the door along a door path where the door path is positioned at an angle to a path to be traversed by the substrate.

A fuel injection system having an injection valve, a line supplying fuel at high pressure to the injection valve a control valve controlling the pressure in a control chamber communicating with the line. The control valve has a movable valve part is actuatable by an actuator via a hydraulic coupler having two pistons cooperating with a coupler volume of the coupler. A seat of the movable valve part has an inside cross-sectional area f3, with means for filling the coupler volume via guide gaps of the pistons with fuel under pressure. The pistons are located parallel to and inside one another and a booster chamber is located on the ends of the pistons toward the actuator. In the interior of the outer piston defines a filling chamber which communicates with the line and one of the pistons has a cross-sectional area f4 is mechanically coupled to the actuator via a rod having a cross-sectional area f5. The other piston which has a piston area f2, actuates the control valve via a rod having a cross-sectional area that is smaller than f2 and the direction of the closing motion of the movable valve part matches the direction of fuel flowing out of the control chamber so that the control valve is at least partially force-balanced because of the pressure acting on the further piston in the booster chamber.

An air support article of air inflatable furniture comprises an air inflation device. The air inflation device provides an openable and closable opening into the sack that forms the majority of the article. The air inflation device comprises at least one pliable flap attached to the sack. The flap acts as a partial check valve that allows the article to be inflated simply by rapidly opening and closing the opening.

The invention discloses a method for quickly reclaiming rollback space in MySQL. The method includes: closing a MySQL database by means of clearing inactive rollback data during closing; based on an original system table space file of rollback space to be reclaimed, generating a new system table space file not including the rollback space; replacing the original system table space file with the new system table space file. The invention further discloses a device for quickly reclaiming the rollback space in MySQL. The rollback space in MySQL can be quickly reclaimed by the method; availability of the whole database system is improved.

A vehicle having two primary wheels and two or more retractable wheels that may be operated in either two-wheeled or multi-wheeled configuration.

The invention discloses a buffer door window hinge which comprises two hinges with beam barrels and interlocking mechanisms arranged in the beam barrels. The interlocking mechanisms respectively correspond to the integral beam barrels, and are correspondingly interlocked with the two hinge beam barrels. Each interlocking mechanism comprises an interlocking buffer device capable of preventing a door window from being closed at an excessive speed. The interlocking buffer device consists of an axis body, a lifting rod which is capable of lifting and pivoting relative to the axis body along the axis and is arranged at one end of the axis body, and a buffer which buffers the lifting of the lifting rod and consequently buffers the relative pivoting of the lifting rod; wherein the axis body is relatively fixed with one hinge beam barrel and can rotate coaxially, and the lifting rod is connected with the other hinge beam barrel so as to be lifted up and down when the lifting rod rotates fixedly with the hinge. The buffer window hinge which has a simple structure and a small size can be installed on the door window body or inside a door frame without impacting the appearance of the door window.

It relates to the dual voltage peak valve retaining driving circuit. It uses parallel dual voltage drive. The low end drive circuit keeps conducting when the control pulse arrives, high end drive circuit conducts with the rising of control pulse, cutting off the flow limit circuit made of simple separated units when the drive current reaches preset peak valve, and the electromagnetic drive circuit entering into the only existing low end drive circuit retaining stage. With bleed resistance on the low end drive circuit, it can solve the problem of instant unable to follow up of the low end drive circuit with the leakage of electromagnetic valve and high end electric circuit with instant cut off of the electromagnetic valve. On the after-flow of the electromagnetic valve, adopting parallel voltage sensitive resistance to get rid of the sensing voltage peak occurring at the instant of the electromagnetic valve cut-off, it not only get rid of the sensing voltage peak, but also ensures the cut-off speed of the valve. It is quick, endurable and extensively applicable.

A quick open-closed device for biochemical equipment (1) comprises a socket (2) disposed on the biochemical equipment and a plug (3) for coupling with the socket. The socket is a hollow, cylindrical element, and comprises a cylindrical sidewall (25) and a passage (26) in communication with an interior chamber of the biochemical equipment. The cylindrical sidewall of the socket defines an engaging slot (27), which comprises a guiding portion (271) and a retaining portion (272) connected with each other. The plug has a straight pin (31) for being inserted into the passage of the socket. A peg (312) is provided on the straight pin for rotatively and releasably engaging with the engaging slot of the socket to assembly the plug and the socket together as a unit.