646results about How to "Simple and reliable structure" patented technology

A downhole flow pulsing device comprises a housing connected in series with a drill string and a valve with a rotating portion in the housing arranged to vary an area of a flow passage through the housing. A fluid actuated positive displacement motor drives rotation of the valve. A drive link permits the rotating portion of the valve to be optionally coupled directly to the motor of the drill string. The valve includes radially oriented rotating ports intermittently communicating with surrounding fixed ports and a bypass channel. Axial displacement of the rotating ports relative to the fixed ports and bypass channel permits amplitude of the downstream fluid pulses to be adjusted. The valve includes a number of circumferentially spaced ports which differs from a prescribed number of pressure fluctuations in the fluid for each full rotation of the rotor of the drill motor.

A hand-swing type shilly-car includes a main frame module and a hand-swing module. The main frame module includes a rear-wheel tube, a T-shaped structure formed by the rear-wheel tube and main-frame tube and having a cushion, two wheels installed at both ends of the rear-wheel tube respectively, and a pedal tube installed at the front of the main-frame tube. The hand-swing module includes a swing tube, a handlebar at the top of the swing tube, a guide wheel at the bottom of the swing tube, a bearing sleeve at the top of the swing tube and opposite to the guide wheel and having a bearing at the top and bottom of the bearing sleeve. A fixing element with a C-shaped structure is installed at the main-frame tube for receiving both bearing sleeve and bearings, and a fixing shaft is provided for rotably fixing the bearing sleeve and bearings.

The current measuring device comprises a first measuring resistor to receive a measurement current, and a first signal amplifier having an input connected to said first measuring resistor and an output to provide a first measurement signal. A second measuring resistor is connected in series with said first measuring resistor, and first voltage limiting means are connected in parallel on the first measuring resistor to branch a first shunt current off when a first limiting voltage is reached on said first measuring resistor. The value of the first measuring resistor is greater than the value of the second measuring resistor A processing unit comprises one such current measuring device.

The use of a prepreg containing at least one fiber and a matrix to be cured during application, for the production of a fiber-reinforced composite, for active orthodontic therapy. An active orthodontic appliance is disclosed which includes an arch wire in at least one part, directly contactable with teeth and including a fiber-reinforced composite containing at least one fiber and a matrix, the arch wire including a loop directly contactable with a tooth or teeth to be moved by the appliance. A process for manufacturing an active orthodontic appliance and to an active orthodontic method of treatment are also disclosed.

A bipolar zero-gap electrolytic cell comprising an anode comprising an anode substrate constituted of a titanium expanded metal or titanium metal net of 25 to 70% opening ratio, which anode after coating the substrate with a catalyst has a surface of 5 to 50 μm unevenness difference maximum and has a thickness of 0.7 to 2.0 mm. In this electrolytic cell, the possibility of breakage of ion exchange membrane is low, and the anolyte and catholyte have a concentration distribution falling within given range. With this electrolytic cell, stable electrolysis can be performed for a prolonged period of time with less variation of cell internal pressure.

A brewing unit including a first brewing chamber portion and a second brewing chamber portion; a channel for inserting capsules towards said brewing chamber; a mobile deviator interposing between said first brewing chamber portion and said second brewing chamber portion when said first brewing chamber portion and second brewing chamber portion are open, to deviate said capsules towards one of said first and second brewing chamber portions; an actuation mechanism for closing and opening said brewing chamber, wherein said actuation mechanism is connected to open and close said brewing chamber; said actuation mechanism is further connected to said mobile deviator such that said actuation mechanism controls said mobile deviator to remove said mobile deviator from a trajectory of mutual motion of said first and second brewing chamber portions during closure of the brewing chamber.

The outlet switch device includes a fixed unit, an outlet switch mechanism, an inlet switch mechanism and a driving mechanism. The outlet function switch is realized through the relative rotation between the outlet switch mechanism and the fixed unit; the fixed unit includes a control cavity and an inlet waterway connected to the external water resource; the outlet switch mechanism includes a switch plate, which is movable connected inside the control cavity and divides the control cavity into an upper cavity and a lower cavity; the inlet switch mechanism controls the inlet waterway to control the water turning into the upper cavity or the lower cavity, making the switch plate move up and down with the effect of the water; the driving mechanism is disposed between the switch plate and the fixed unit to transform the action up and down to rotation.

The present invention relates to a gate valve (100) comprising: a valve blade (120) for closing an opening (112) of a valve housing (110); a valve rod (130) which connects to the valve blade (120) and can move vertically and horizontally; a guide housing (140) which is connected to the outside of the valve housing (110) and is provided with L-motion block guide grooves (142) on the interior surface of both sides; an L-motion block (150) which is connected to the valve rod (130), and on both sides of which guide rollers (151) that are driven by being inserted into the L-motion block guide grooves (142) are installed; a driving block (160) which is connected to the upper and lower portions of L-motion block (150) by means of at least one link (155); a tensile elasticity means (170), at least one of which is installed between the L-motion block (150) and the driving block (160); and a vertical driving means (180) for vertically driving the driving block (160). 본 발명은 밸브 하우징(110)에서 개구부(112)를 폐쇄할 있는 밸브 블레이드(120);와, 상기 밸브 블레이드(120)에 연결되며, 상하 운동 및 평 운동을 할 있는 밸브 로드(130);와, 상기 밸브 하우징(110)의 외측에 연결되며, 엘 모션 블록 가이드 홈(142)이 양측 내면에 형성되어 있는 가이드 하우징(140);과, 상기 밸브 로드(130)에 연결되며, 양 측면에 상기 엘 모션 블록 가이드 홈(142)에 삽입되어 구동되는 가이드 롤러(151)가 설치되는 엘 모션 블록(L-Motion Block)(150);과, 상기 엘 모션 블록(L-Motion Block)(150)에 상측과 하측에 각각 하나 이상의 링크(155)를 통하여 연결되는 구동 블록(160);과, 상기 엘 모션 블록(L-Motion Block)(150)과 상기 구동 블록(160) 사이에 하나 이상 설치되는 인장 탄성 단(170);과, 상기 구동 블록(160)을 상하로 구동하는 상하구동 단(180); 을 포함하여 구성되는 것을 특징으로 하는 이트 밸브(100)에 관한 것이다.