摘要:
An electromagnetic control valve is provided with a housing having an inlet and two outlets extending through the wall of the housing. A valve member is mounted in spaced relation from each outlet opening on a resilient member for movement into and out of engagement with a valve seat surrounding the outlet opening. An elongated valve actuator is pivoted at its mid-point between the two valve members and is provided with a projection adjacent each end disposed in contact with a respective valve member. A spring normally biases the valve actuator about its pivot point to bias one of the valve members into engagement with its associated valve seat. An electromagnet is located on the opposite side of the valve actuator from said one of said valve members to pivot the valve actuator against the force of the spring.
摘要:
A solenoid-operated fluid control valve has an armature assembly which includes a reciprocally movable platelike magnetic valve member and a seal element loosely retained by the valve member and projecting therefrom. A magnetic core defines a fluid passageway and has a valve seating surface at its one end. The valve seating surface of the magnetic core opens in a valve chamber which surrounds the side surface of the magnetic valve member to guide its movement toward and away from the valve seating surface and to maintain the seal element in alignment with the valve seating surface. The seal element has opposed conical or spherical ends and an annular recess therebetween. The seal element loosely engages with and retained by an opening of the magnetic valve member to abut concentric with the valve seating surface of the magnetic core in spite of a slight eccentricity of the assembly within the valve chamber. The solenoid-operated fluid control valve also has a compression spring positioned concentric with the magnetic valve member and bears at one end against the magnetic valve member and a solenoid mounted on a bobbin in which the magnetic core is secured.
摘要:
An air-filter assembly having a filter cap and a filter case, both being made of elastic material such as synthetic rubber and which are formed integrally with each other. The air filter assembly is provided at an air inlet pipe portion of a valve for use in an exhaust gas emission cleaning system.
摘要:
A pressure differential switch device having a flexible diaphragm between two chambers subject to differential pressures and a permanent magnet movable with the diaphragm against a biasing force when pressure differences occur in the chambers; the magnet moving to a position in which the magnetic field of the magnet actuates the contacts of a reed switch assembly.
摘要:
A differential pressure switch device having a flexible diaphragm between two chambers subject to differential pressure, a permanent magnet movable with the diaphragm against a biasing force when pressure differences occur in the chambers, a thermo ferrite combined with the magnet for cooperation therewith, and a reed switch assembly actuated by the movement of the magnet and through the action of the thermo ferrite which becomes magnetic or non-magnetic depending on the temperature.
摘要:
In an electromagnetically operated valve unit, a moving-coil linear motor is associated with a flow regulating valve to linearly control the quantity of fluid flow in proportion to an input current applied thereto.
摘要:
An electrically operated switching valve comprising a valve housing provided with a pair of opposed valve ports, a valve member disposed between the valve ports for co-operation therewith and a snap-action valve actuating device for actuating said valve member alternately into engagement with the valve ports. The valve actuating device includes a rectangular plate which is bent in one direction along the longitudinal center line and a strap member extending between diagonally opposite corners of the plate and secured thereto. The strap member has a length which is smaller than the diagonal dimension of the plate so that the plate is deflected under tension applied by the strap member in the opposite direction along the transverse center line of the plate. The strap member is associated with an electric heating wire so that it is heated when the wire is energized. Since the strap member has a coefficient of thermal expansion which is greater than that of the plate so that it is expanded by a greater extent than the plate when heated by the wire allowing the plate to return with snap action to its undeflected position.
摘要:
An electrothermally operated valve which comprises a housing provided thereon with first and second ports and with a hermetic chamber in communication with the respective ports, a bimetallic element having a stationary end secured to an inner wall of the housing and a movable end, a cut-off valve including a valve body fixed on the movable end of the bimetallic element to co-operate with one of the first and second ports, and a heating coil coupled with the bimetallic element and adapted to be connected with a source of electricity. When the bimetallic element is heated upon energization of the heating coil, deflection of the bimetallic element is assisted by snap action to open the cut-off valve so as to communicate the first and second ports to each other through the hermetic chamber.
摘要:
A light modulator element includes a liquid crystal element which has a liquid crystal layer containing liquid crystal molecules aligned along a first direction, and two transparent electrodes disposed in opposition to each other with the liquid crystal layer sandwiched therebetween, and which controls the phase of linear polarization light and passing through said liquid crystal layer by applying an electric voltage between said two transparent electrodes; a polarizer plate which is disposed between a light source and said liquid crystal element and which has the transmission axis along the first direction or along a direction orthogonal to said first direction; and a rotation mechanism which supports the liquid crystal element and the polarizer plate and which rotates the liquid crystal element and the polarizer plate integrally in one unit with the optical axis of the liquid crystal element as the rotation axis.
摘要:
The present invention is directed to the provision of a liquid crystal device constructed by sealing a liquid crystal material between substrates, wherein provisions are made to prevent reflections at the sealing, thereby achieving excellent transparency. The liquid crystal device includes a first substrate disposed on a viewing side, a second substrate disposed opposite the first substrate, a sealing member disposed between the first substrate and the second substrate, a liquid crystal layer provided between the first substrate and the second substrate and sealed by the sealing member, and a muslin structure or moth-eye structure placed between the first substrate and the sealing member. The muslin structure or moth-eye structure serves to form a smooth refractive index gradient between the sealing member and the first transparent substrate, thereby enhancing the transparency of the liquid crystal device.