1882 results about "Magnetic switch" patented technology

An apparatus includes a pressure housing configured to be coupled to a vacuum source and a diaphragm sealingly coupled to the pressure housing. The diaphragm is configured to move in response to the vacuum source. A magnet is coupled to the diaphragm. A magnetic switch is disposed opposite the magnet and is configured to be actuated by the magnet when the magnet is a predetermined distance from the magnetic switch. The magnetic switch is configured to selectively actuate the vacuum source.

An adjustable-height bicycle seat post assembly comprises a hollow seat post for supporting a bicycle seat slidably on plastic guides or shims inside a hollow tube. The hollow tube clamps into the frame of a bicycle. A mainspring forces the post upward, but a locking mechanism interconnects the post with the tube in various fixed positions relative to the tube. The locking mechanism includes a housing, which supports a plunger for reciprocating movement into and out of engagement with holes on the post. The locking mechanism is affixed to the outside of the tube to bear shearing forces on the plunger. An endcap on the locking mechanism and a topcap on the tube protect the assembly from foreign debris. The locking mechanism may be manipulated remotely using a magnetic switch assembly or manually using a mechanical assembly. A lost motion coupling is integrated into the locking mechanism and/or actuator assembly to enable the remote actuator to be moved or deployed while the latch remains trapped under the influence of a dominant shear load. The lost motion coupling is also effective to allow an operator to deploy the remote actuator at any convenient time prior to a desired change in seat height.

An adjustable height bicycle seat post assembly comprises a hollow seat post for supporting a bicycle seat slidably supported on plastic shims inside a hollow tube. The hollow tube clamps into the frame of a bicycle. A main spring forces the post upward, but a locking mechanism interconnects the post with the tube in various fixed positions relative to the tube. The locking mechanism includes a foundation and a projection extending from the foundation having a counterbore for guiding a plunger into holes on the post. The locking mechanism adheres to the outside of the tube to bear shearing forces on the plunger. An endcap on the locking mechanism and a top cap on the tube protect the assembly from foreign debris. The locking mechanism may be manipulated remotely using a magnetic switch assembly or manually using a manual assembly.

An implantable magnet that can freely turn in response to an external magnetic field, thus avoiding torque and demagnetization on the implantable magnet. The implantable magnet can be combined with an electric switching function depending on the orientation of an external magnetic field, thus protecting an implanted coil and/or implant electronics against induction of over-voltage or performing an electric switching function for other various purposes. The magnetic switch may further include, for example, a first switching contact and a second switching contact. A magnetically soft body that includes an electrically conductive surface is shiftable between a first position where the body is in simultaneous contact with the first and second switching contacts, and a second position where the body is out of contact with at least one of the first and second switching contacts. The body and the implantable magnet are positioned such that the body is shifted to one of the first position and the second position as a function of the external magnetic field resulting in a magnetic force between the magnet and the magnetically soft body.

A rotary steerable system for use in a drill string for drilling a deviated well is disclosed. The system utilizes a mechanical gravity reference device comprising an unbalanced weight which may rotate independently of the rotation of the drill string so that its heavy portion is always oriented toward the low side of the wellbore and which has an attached magnet. A magnetic switch that rotates as the drill string rotates is activated when its axis coincides with the axis of the magnet, and this activation results in a thrust member or pad being actuated to "kick" the side of the wellbore.

A non-volatile magnetic memory device having one or more memory cells, each of the memory cells includes a magnetic switch including a C-shaped magnetic component and a write coil located proximate the magnetic component, the write coil coupled to receive a current sufficient to create a remnant magnetic polarity in the magnetic component, and a Hall sensor, positioned proximate the magnetic component, to detect the remnant magnetic polarity indicative of a stored data bit.

The invention belongs to the technical field of the power supply, in particular to an all solid state high voltage nanosecond pulse power supply. The power supply is divided into the following two parts: a series voltage booster circuit and a pulse compression circuit, wherein the series voltage booster circuit consists of a series of voltage units which are connected in series to realize the function of voltage boost; each voltage unit is provided with a capacitor connected with a switch which can be connected and disconnected, and capacitors of the series of the voltage units form a capacitor unit; one part in the switch is a charge switch to charge the capacitors in parallel, while the other part is a discharge switch to discharge the capacitors in series; the pulse compression circuit is connected with a magnetic switch in a series connection mode by an energy storage capacitor or a sharpening capacitor. The power supply reduces system volume to connect more voltage units in series, and uses a direct current charge power supply with lower voltage to charge a pulse generator; the adopted switch device generator has longer service life and higher frequency; and the used magnetic switch reduces rise time of voltage pulse output by a Marx circuit, and is free of maintenance and has low failure rate.

A lighting device with a magnetic switch is disclosed, wherein plural magnetic fields are produced by utilizing a magnetic piece and a magnetic induction element together with a ring structure to form circuits equivalent to functional keys and make a lighting element produce plural induction effects under the control of a magnetic induction element via a circuit board, so that the lighting device can be operated easily.

The sample type digestive tract medicine releasing and sampling device includes a shell to form sealed cavity; an inwards non-return valve communicated with the inside of the shell in the front end of the shell; a magnetic switch, a power source, a power source managing and controlling unit, a driving unit, a sealing layer and a rubber piston inside the shell; and an outer trigger. After the triggering signal the outer trigger sends is received and treated by the signal control unit, the driving unit relieves the stored mechanical energy based on the command to drive the piston, the stored medicine is exhausted through an outwards non-return valve to the digestive tract, and liquid enters the liquid storing bin through the opened inwards non-return valve. After the piston reaches to the top of the shell, the stroke ends, two valves are closed automatically to separate the collected liquid inside the liquid storing bin from outside. The medicine releasing and sampling device has high reliability, low power consumption, long stand-by time and simple structure.

The invention relates to a bearing press-fitting device, in particular to an automatic bearing press-fitting machine for motor rotors. The invention aims at providing the automatic bearing press-fitting machine which is capable of pressing and fitting rotors at the two ends at one time, is simple to operate, safe and reliable, high in press-fitting efficiency and good in press-fitting quality. The automatic bearing press-fitting machine comprises a base, press-fitting cylinders, a left bearing supply mechanism, a right bearing supply mechanism, a left bearing locating mechanism, a right bearing locating mechanism and a rotor locating mechanism; the left and the right bearing supply mechanisms supply bearings to the left and the right bearing locating mechanisms; the bearings are located by the left and the right bearing locating mechanisms; the left bearing locating mechanism and the rotor locating mechanism are pushed by a piston rod of the press-fitting cylinders to slide to the position of the right bearing locating mechanism to press and fit the bearings at the two ends at one time. In addition, the cylinders in the whole device are all provided with magnetic switches. A PLC (programmable logic controller) can automatically control the operation of the whole device by the signals from the magnetic switches to the PLC so as to press and fit the bearings at the two ends automatically.

A magnetic switch for, inter alia, a food processor, wherein, when a cover is locked on a bowl, which in turn is locked to a base, magnets are brought towards a magnetically controlled working contact connected in series in the supply circuit of a motor.

A convenience light for illuminating small interior spaces of enclosures, such as furniture, chests, jewelry boxes and the like, has a battery powered LED lamp. A mechanical or magnetic switch device is used to automatically turn on and off the LED by opening and closing the movable member (drawer, door, etc.) of the enclosure. The low power consumption LED provides lengthy continuous use of the light with a tiny watch battery. The LED and watch battery allow the housing to have a small form factor for discrete placement in the enclosure at various positions. In variations forms, the device can include a reflective surface at the exterior of the housing adjacent the lamp and a mechanism to articulate the lamp to direct the light in a specific direction.

A magnetically activated switch includes a flexible metallic strip on the inside of a sealed encasement, having first and second ends. The first end provides for an electrical contact and extends through the wall of the sealed encasement, with the strip being firmly secured by the wall of the encasement at the exit point, leaving the second end unsupported and having a magnetic responsive element attached. A first dipole magnet is coupled to the flexible metallic strip and located within the sealed encasement, intermediate the first and second ends. Second and third dipole magnets are diametrically opposed and separate to each other where each of the second and third dipole magnets are fixedly coupled to the inside surface of the sealed encasement. Two electrical terminals coupled respectively to the second and third dipole magnets extending through the sealed encasement. A magnetic activation device in sliding engagement with the outside surface of the sealed encasement effects the movement of the magnetic contact by sliding to first and second positions corresponding to alignment of the second and third dipole magnets creating an electrical circuit flowing from the flexible metallic strip to one of said two electrical terminals.

A method and apparatus for operating a very high repetition gas discharge laser system magnetic switch pulsed power system is disclosed, which may comprise a solid state switch, a charging power supply electrically connected to one side of the solid state switch; a charging inductor electrically connected to the other side of the solid state switch; a deque circuit electrically in parallel with the solid state switch comprising a deque switch; a peaking capacitor electrically connected to the charging inductor, a peaking capacitor charging control system operative to charge the peaking capacitor by opening the deque switch and leaving the solid state switch open and then shutting the solid state switch. The solid state switch may comprise a plurality of solid state switches electrically in parallel.

The invention provides a drop hammer type shock test bench controlled by a magnetic switch, belongs to the technical field of civil engineering, and relates to a fiber concrete shock-resistance property test device. The device is characterized in that a shock rack is vertically welded to a bottom plate; a positioning cantilever is connected with the shock rack through a movable bolt, and the height is freely adjusted; the magnetic switch is connected with the positioning cantilever through a movable bolt, and the position is accurately adjusted. The free falling of the shock hammer is ensured, and the protecting device is clamped around four iron baffle plates on the bottom plate through square sleeves, thus the edge conditions of a test piece during shocking are same, and simultaneously the safety of the operators is ensured. The invention has the advantages of obvious enhancement of shock test accuracy, wide application, simple structure, easy operation, convenient carrying and enhancement of test safety.