Abstract: The system and method for wireless water leak detection provides for manual prevention of external action, such as an external alarm and/or valve shut-off, if a leak sensor can be reached by a respondent within a pre-set time threshold. Upon detection of a leak by a leak sensor, a local alarm, such as an audible alarm or the like, is initiated. Additionally, at the time of detection, a first time is recorded. A first alarm signal is transmitted from the leak sensor to a base station. The first alarm signal includes data representative of the recorded first time. If manual input is not received by the leak sensor within a pre-set time threshold measured from the first time, then the base station transmits a second alarm signal to at least one external device, and may further wirelessly transmit a shut-off signal to a valve controller for closing an associated valve.

Abstract: The present invention relates to a device for flushing a body cavity with a fluid, the fluid being pumped by means of two lines from the body cavity. The respective pumping capacity is regulated via controllable pinch valves, the two pinch valves being coupled in an antiparallel manner.

Abstract: A damper for a furnace, the damper including an air port damper body engaged to an air port opening of a furnace; and at least one velocity plate in hinged engagement to the air port damper body so that an air controlling end surface of the at least one velocity plate is substantially aligned to a wall of the furnace at the air port opening when the at least one velocity plate is in a fully opened position.

Abstract: A blowout preventer includes a housing including a longitudinal passage and a pair of ram passages extending from the longitudinal passage, a first ram assembly disposed in a first of the pair of ram passages and including first ram block assembly, and a second ram assembly disposed in a second of the pair of ram passages and including a second ram block assembly, wherein the first ram block assembly is configured to include a first configuration in which it sealingly engages an outer surface of a tubular member extending through the longitudinal passage of the housing when the blowout preventer is in a closed position, and a second configuration in which it sealingly engages the second ram block assembly when the blowout preventer is in the closed position.

Abstract: A shaft-bearing bush assembly for a valve arrangement for an air-conditioning system is disclosed. The shaft-bearing bush assembly includes a shaft drive-connectable to a valve of the valve arrangement and a bearing bush, in which the shaft is rotatably received relative to the bearing bush between a first rotary position and a second rotary position about an axis of rotation extending along the axial direction. A bush projection is non-rotatably arranged on the bearing bush relative to the bearing bush and a shaft projection is non-rotatably arranged on the shaft relative to the shaft. The bush projection and the shaft projection are matched to one another such that the bush projection provides a rotary stop for the shaft projection for limiting the rotary movement of the shaft between the first rotary position and the second rotary position.

Abstract: A drain arrangement for a washstand, comprising a connection unit having a connecting branch for connection to a drain branch of a washstand, an overflow unit connecting to the connection unit and having a valve and an overflow pipe, which bridges the valve, and a siphon unit connecting to the overflow unit and having a siphon element. The connecting branch, seen in the installation position, runs in a first direction, which is oriented at an angle inclined at less than 30° tilting downwards to a mounting plane running in the vertical of the washstand. The overflow unit lies offset to the side of the connecting branch in such a manner that the overflow pipe extends upwards to the side adjacent to the connecting branch and the siphon unit lies beneath the overflow unit.

Abstract: A drain assembly for connection to a sanitary-appliance, comprising: a drain pipe having a pipe inlet and a pipe outlet and a valve arranged in a valve section of the drain pipe having a sealing face and a valve body, wherein the valve body can be moved away from the sealing face from a closed to an open position by an actuating element. Also included is an overflow pipe, which extends away from the drain tube from a first branch lying upstream of the valve seen in the direction of flow of the water to a second branch lying downstream of the valve seen in the direction of flow and thereby bridges the valve. The valve body is at least partially mounted on an insert element; the drain pipe has an insert receptacle; and the insert element can be inserted into the insert receptacle on the drain pipe.

Abstract: The present disclosure discloses a drain assembly, has a downpipe and a sealing plug; the upper end opening of the downpipe is provided with a connecting pipe seat by integral molding and the upper end opening of the connecting pipe seat serves as a sewer outlet; the downpipe and the connecting pipe seat internally share a connector that can move upward or downward; the upper end part of the connector is linked with the sealing plug; the pipe wall of the downpipe is integrally provided with a guide seat at the position corresponding to the lower end part of the connector; the guide seat is communicated with interior of the downpipe. Furthermore, the stay wire component is elastically clamped on the downpipe through a wave spring, therefore, the installation speed is increased and the sealing effect of the connection is ensured.

Abstract: Embodiments of the present disclosure relate generally to valves that provide controlled inflation. The valves are designed to allow inflation of one or more inflatable devices and to stop inflation once a desired inflation level has been reached. This can allow the valve to be used with a single inflation source in order to inflate a plurality of inflatable devices. In a specific example, this disclosure provides systems and methods for inflating an ejector bag for door-mounted or fuselage-mounted inflatable evacuation slides or slide/rafts used for evacuating passenger vessels, such as aircraft. Other examples relate to sustaining the inflation of individual tubes that communicate with one another in evacuation slides, evacuation slide/rafts, life rafts and/or other inflatable devices.

Abstract: An airbag apparatus includes: a cover that covers a vent hole which is formed on an airbag bag body from an inner part of the airbag bag body; a fixation part that supports the cover movably; and a strap that is connected to the cover, wherein a width of the strap is smaller than a diameter of the vent hole.

Abstract: A combination control assembly of dual fuel internal combustion engine comprises a dial (2) that can be rotated to manipulate operation of a dual fuel internal combustion engine; a turntable (3) includes a disk body (301) and a shift lever (302), characterized in that the shift lever (302) is settled on the disk body (301); a first rotating part (4) that can be rotated by cooperating with the shift lever (302); a second rotating part (9) that can be rotated by cooperating with the shift lever (302); a first fuel valve (6) opened by the first rotating part (4), a second fuel valve (11) opened by the second rotating part (9). The combination control assembly controls the first fuel valve (6) and the second fuel valve (11), simplifying the manual operation and keeping the engine runs stable.

Abstract: An example rotary actuator includes a cam that is to be coupled to a valve. The cam is rotatable about an axis. The example rotary actuator also includes a linear actuator having a stem movable along a path offset from and perpendicular to the axis and a chain having a first end and a second end opposite the first end. The first end of the chain is coupled to the stem and the second end of the chain coupled to the cam. The chain is disposed around at least a portion of an outer edge of the cam, and movement of the stem along the path rotates the cam about the axis.

Abstract: An air bag having a tri-state vent, in an initial state the vent is configured to be closed, the vent in a medial state configured to be at least partially open or fully open as the air bag is starting to inflate permitting some inflator gas to exit through the vent and the vent in a final state configured to be at least partially closed or fully closed as the air bag continues to inflate.

Abstract: A remote drain plug system is described. The system includes a control cable having an inner wire and an outer layer, a cable actuator coupled to a first end of the control cable, the cable actuator adapted to move the inner wire within the outer layer, a drain plug housing coupled to a second end of the control cable, and a drain plug coupled to the inner wire at the second end of the control cable, the drain plug adapted to be able to be positioned relative to the drain plug housing. A method of operating the remote drain plug system includes providing an actuator controller, receiving a selection of “open” from the actuator controller, and extending the remote drain plug away from a drain plug housing such that water is able to flow through the drain plug housing.

Abstract: A remote actuator device for a valve control knob on a tank (e.g., storage tank) is disclosed.

Abstract: A cinch valve includes a first plate with a first aperture, an orbital plate with a second aperture that is substantially aligned with the first aperture. The first plate is arranged to rotate relative to the first plate between a first (open) position and a second (closed) position. The cinch valve includes multiple cables, each of which has a first end coupled to the first plate and a second end coupled to the orbital plate. Rotation of the orbital plate from the first position to the second position causes the plurality of cables to converge and form a woven closure. One or more elastic devices are arranged such that when the plurality of cables converges to form the woven closure, each elastic device urges a corresponding one of the cables in a direction that tends to open the woven closure.

Abstract: A button water-stopping device has a button mechanism that can be glidingly connected to a main body, a shaking plate that can be asway set in the main body. The main body has a water channel that can penetrate the main body and a division board that is hermetically set in the water channel and has the first water hole that penetrates the division board. The button mechanism has a button and an elastic rod which is fixed under the button, and reaches into the water channel. The shaking plate has the second water hole that penetrates the shaking plate and a control groove which has two cooperative grooves. The elastic rod reaches into the control groove and can alternatively resist one of the two cooperative grooves to make the shaking plate swing left or right.

Abstract: A waterway switch device has a waterway mechanism, an execution part, an operation part and a transmission part. The waterway mechanism has a main body, and an inlet and a plurality of outlets are arranged on the main body. The execution part is mounted in the main body and has a moving piece, and at least the switch of the outlets to the inlet can be achieved through the relative movement between the moving piece and the main body. The operation part has a handle. The transmission part has a wire rope, one end of the wire rope is connected with the moving piece, the other end is connected with the handle in a transmission manner. The handle rotates relatively, and the wire rope is driven to move, and the moving piece can move relative to the main body.

Abstract: An illustrative valve cartridge for a pump system is disclosed. In one example the valve cartridge includes a cartridge body, a mounting flange operatively coupled to the cartridge body, wherein the mounting flange is adapted to be coupled to a housing of a pump, a valve member that is adapted to sealingly engage a valve seat within the pump housing and an actuator positioned within the cartridge body, wherein the actuator is operatively coupled to the valve member via a connector and wherein the actuator is adapted for selectively moving the valve member relative to the valve seat when the valve cartridge is operatively coupled to the pump housing.

Abstract: The urinal with operation controlled via a replica of a motorcycle handlebar is a wall-mounted fixture configured to control the use of the flush valve of said urinal, or toilet, or other plumbing fixture. The replica motorcycle handlebar includes a linkage that runs from the throttle portion of the motorcycle handlebar to the flush valve of said urinal such that upon simulation of a throttling gesture shall pull said flush valve upwardly in order to flush the respective urinal or plumbing fixture. The replica motorcycle handlebar includes a motion sensor that upon detection of a person shall communicate an audio recording of a motorcycle noise. The replica motorcycle handlebar includes mirrors, turn signals, and a horn switch. Throttling motion of the throttle portion may also prompt an additional audio recording of a motorcycle engine being revved.

Abstract: An illustrative valve is disclosed that includes a valve body with a valve seat and a valve member adapted to sealingly engage the valve seat. The valve also includes an actuator operatively coupled to the valve member via a non-rigid connector, wherein the actuator is adapted for selectively moving the valve member relative to the valve seat.

Abstract: A hydraulic controller having at least one input for a hydraulic fluid for controlling the speed of a hydraulic pump driven by an internal combustion engine is characterized in that the controller has at least two inputs, that at least two pressure chambers each connected to one of the inputs are provided, that each of the same has a piston displaceable under pressure from a rest position against the force of a spring into a switched position and that the piston rod thereof engages at the end of a rod or a pull in the switched position.

Abstract: A tube clamping system includes a Bowden cable with an inner member and an outer casing. A first jaw element has a first tube abutment surface, a passage, and a first sliding latch portion. The inner member passes through the passage. A second jaw element has a second tube abutment surface, a cable guide, and a second sliding latch portion. The inner member has a first end held in the mated sliding latch portions so that sliding of the inner member results in selectably positioning the first and second tube abutment surfaces together or spaced apart. An actuator coupled to a second end of the outer casing and a second end of the inner member applies a force to slide the inner member within the outer casing, the passage, and the cable guide. The Bowden cable substantially isolates the tube being clamped from the weight of the actuator.

Abstract: Valve controllers and methods of their use are described. Valve controllers of the type described herein can be used to operate valves that are out of manual reach by the operator. One embodiment of a valve controller includes proximal and distal controller heads connected to each other via a hollow elongate shaft. Each of the proximal and distal controller heads includes a rotatable pulley wheel that is connected to a valve control engagement member for engaging a handle of a valve operable to shift the valve from a first position to a second position. The rotation of the proximal and distal pulley wheels, and thereby the proximal and distal engagement members, is coupled via a cord that runs through the hollow elongate shaft and around a circumferential portion of each pulley wheel.

Abstract: Compact reeds maximize flexural length by efficiently utilizing available space surrounding the port. Maximum length arms are disposed at the perimeter of the housing inlet port. Stresses at the ends of the arms are mitigated by utilizing compound radius transitions. The transitions are constructed by two or more arcs of different radii, which produce lower stresses at such junctures than if single radius transitions were used. The arms are disposed close to the reed sealing surface edge to orient the flow streamlines to be aligned with the arm width, thereby minimizing frontal drag area. The reduced frontal area reduces drag forces and related stresses on the arms, and reduces the overall flow related pressure drop across the reed. Replacing a single hole port, a port comprised of multiple passages of varying size control the velocity exiting the passages. The velocity gradient across the port provides further capability to orient the said streamlines to reduce said drag.

Abstract: A cinch valve includes an upper plate having a first aperture; an orbital plate rotatable relative to the upper plate and having a second aperture substantially aligned with the first aperture; an actuator coupled to the orbital plate arranged to rotate the orbital plate between a first position and a second position; and a plurality of cables each having a flexible portion and each having a first end and a second end, wherein each first end is coupled to the upper plate and each second end is coupled to the orbital plate. Rotation of the orbital plate from the first position to the second position causes the plurality of cables to converge and form a woven closure in approximately the center of the second aperture.

Abstract: An assembly for culturing cells includes a housing defining a reservoir for containing cell culture media and an opening in fluid communication with the reservoir. The cell culture assembly further includes a filter valve assembly configured to sealingly engage the opening. The filter valve assembly includes a flexible membrane, a contiguous side wall, an end wall, and a microbial filter. The end wall has an opening and extends across one end of the side wall to form a major cavity within the side wall and the end wall. The flexible membrane has a slit spanning the membrane and is disposable within the major cavity such that the membrane sealingly divides the major cavity into (i) a chamber formed between the end wall and the membrane and (ii) a minor cavity formed by the membrane and a portion of the side wall. The minor cavity is in fluid communication with the reservoir.

Abstract: An electromechanical actuator is provided for converting rotary action into linear action, and includes an electric motor, a cable yoke, an output shaft, and a pair of cables. The electric motor is adapted to be selectively energized and is configured, upon being energized to generate a drive torque. The cable yoke is coupled to receive the drive torque and is configured, upon receipt thereof, to rotate about a rotational axis. The output shaft is coupled to receive a drive force and is configured, upon receipt thereof, to translate along a linear axis that is disposed at least substantially perpendicular to the rotational axis. Each cable is wound, in pretension, on a portion of the cable yoke and around a portion of the output shaft. The pair of cables is configured, upon rotation of the cable yoke, to supply the drive force to the output shaft.

Abstract: A valve for surgical or medical instruments including: a passage that can be at least partially sealed by twisting a flexible section (1) of the passage wall; element for rotating a mobile end (3) of flexible section (1), characterized in that the actuating element include a cable for transmitting movement to mobile end (3) of the flexible section. The invention also relates to a surgical or medical instrument including a valve according to the invention.

Abstract: The disclosure relates to a device for controlling the flow of a fluid through a flow channel. The flow is controlled by means of a flexible conduit with flexible circular segments compressed along the length of the conduit, whereupon the flexible elements collapse against a circular wall.

Abstract: A device and method for providing portable biological testing capabilities free from biological contamination from an environment outside the device are provided. The device includes a portable housing. The device further includes a volume surrounded by the housing and sealed against passage of biological materials between the volume and the environment outside the device. The device further includes a culture medium within the volume. The device further includes one or more ports configured to provide access to the volume while avoiding biological contamination of the volume. The device further includes a valve in fluidic communication with the volume and the environment. The valve has an open state in which the valve allows gas to flow from within the volume to the environment outside the device and a closed state in which the valve inhibits gas from flowing between the volume and the environment.

Abstract: A safety valve is positioned in supply plumbing that supplies a fluid medium such as natural gas to a point of use structure such as a home. A mechanical actuator is provided remote from the safety valve but mechanically connected to the safety valve. This allows the actuator to be positioned, for example, directly on the point of use structure, avoiding the need for separate bracing for the valve. The valve can be provided with a tee fitting or can be a separate gate valve. The mechanical actuator can be actuated by seismic disturbance, manually, or by activation by remote sensor or home security system.

Abstract: A compact valve using a shape memory alloy comprises: a moving valve body that contacts an inner periphery of a guide pipe having an built-in orifice, is freely movable and has a sealing portion to seal the orifice; a biasing coil provided between the orifice and the moving valve body; and a wire formed of a shape memory alloy and held between a stationary electrode of the guide pipe and a moving electrode of the moving valve body. The orifice is sealed by moving the moving valve body due to transformation of the shape memory alloy by heating the wire. The moving valve body is enabled to be elastically deformable by providing a coil spring to reduce a stress, so that an overload to the moving valve body due to contraction of the wire is absorbed by elastic deformation of the moving valve body. Thereby, the overload to the shape memory alloy is reduced to prevent deterioration of repeatability of memorized shape, to increase durability and reliability of the valve.

Abstract: A termination system for a cable integrated to control a damper, wherein an end portion of the cable is provided about an opening formed in a ceiling or wall, the system includes: a suspension mount having a base and an opened region, the base has an aperture to receive the cable a retaining bar is secured to the suspension mount such that the ceiling or wall is positioned between the suspension mount and the retaining bar and such that the opened region of the suspension mount is positioned over the opening formed in the ceiling or wall, the retaining bar further including a central opening; and a cap having an inside portion and a peg extending from the inside portion, the cap further having an outer periphery sized larger than the retaining bar and larger than the opening formed in the ceiling or wall, and the central opening of the retaining bar is sized to engage the peg, wherein engagement of the peg with the central opening enables the cap to obscure from visibility the retaining bar, the opening in th

Abstract: A valve for surgical or medical instruments includes a passage that can be at least partially sealed by twisting a flexible section (1) of the passage wall, an element for rotating a mobile end (3) of flexible section (1), characterized in that the actuating element includes a cable for transmitting movement to mobile end (3) of the flexible section. Also described is a surgical or medical instrument including a valve as detailed.

Abstract: A rotary valve actuator that effects rotary movement of a rotary valve includes a heavy plate member coupled with a linear motive source, which reciprocates the plate member between a first position and a second position. A first pair of flexible pull connectors, such as lengths of roller chain, are attached to the end of the plate member, and wrap around a wheel. At least one second flexible pull connector is disposed between said first flexible pull connectors and is attached to the other end of the plate member, and wraps around the wheel in the opposite direction of winding as for the first flexible connector.

Abstract: Valve assemblies optionally with inflatable bodies for modulating fluid expulsion from an inflatable body, without active user participation. Valve assemblies include, in separate components or in integrated form, a vent body defining an external orifice, an internal orifice in fluid communication with the external orifice, and an inflatable body interface. Extending from the internal orifice is a collapsible, hollow elongate member defining longitudinal and lateral axes. Sealing closure of the elongate member, which is preferably constructed from a resilient material, results from application of generally opposing mechanical forces across a lateral surface of the elongate member. Compression localizing members may be used proximate to the elongate member to increase closure performance. In addition, performance parameters can be varied by modifying the physical characteristics of the compression members (height, upper surface area, lower surface area, composition, density, use of localizing ridges, etc.

Abstract: A valve assembly comprises a rotatable valve, an electrically operated actuator, and an overstroke device. The actuator comprises a component configured to move in a direction to an actuator position so as to cause corresponding rotation of the valve to a valve position in response to electrical operation of the actuator. The overstroke device is configured to enable the component to move in the direction beyond the actuator position to an overstroke position while the valve remains in the valve position in response to electrical operation of the actuator.

Abstract: An actuator for selectively moving a part relative to another part includes a shape memory wire, which contracts when heated. One portion of the shape memory wire is fixed to a first body, and another portion of the shape memory wire is coupled to a second body, which is movable relative to the first body. When heated the shape memory wire contracts and moves the second body in a direction of travel from a first position relative to the first body toward a second position. The actuator further includes a magnetic field for generating a magnetic force on the second body. The magnetic force acts on and moves the second body in the direction of travel to the second position after the shape memory wire initially contracts, and further decouples the second body from the shape memory wire when applying the magnetic force to the second body to thereby unload the load on the shape memory wire when the second body is moved to the second position.

Abstract: A rainwater collection and diverging system includes a housing that has a bottom wall and a perimeter wall. A door is positioned in the bottom wall. A hinge hingedly couples the door to the bottom wall and a biasing member is attached to the door and biases the door in a closed position. Fluid in the housing may flow outwardly through the bottom wall when a biasing action of the biasing member is overcome and the door is moved to an open position. An outlet is fluidly coupled to the housing. A downspout has a bottom end extending into the housing. A conduit is fluidly coupled to and extends between a free end of the outlet and a fluid receptacle. Water flowing down the downspout is directed into the conduit until a force of the water flowing down the downspout overcomes the biasing action and opens the door.

Abstract: A multi-stage pedal control water supply installation includes a tap provided with water inlet and water outlet, a control valve with orifice, a linking unit, one or a plurality of pedal, and a flow control unit; the flow control unit being disposed by one side of the pedal to interfere with displacement of the pedal thus for the linking unit to control the overlapped area between water inlet and water out at the valve orifice to achieve the purpose of water supply at various stages with variable amount of water supplied.

Abstract: A multi-stage pedal control water supply installation includes a tap provided with water inlet and water outlet, a control valve with orifice, a linking unit, one or a plurality of pedal, and a flow control unit; the flow control unit being disposed by one side of the pedal to interfere with displacement of the pedal thus for the linking unit to control the overlapped area between water inlet and water out at the valve orifice to achieve the purpose of water supply at various stages with variable amount of water supplied.

Abstract: An outflow valve includes a valve closure mechanism that automatically closes the outflow valve in the unlikely event the outflow valve actuator becomes inoperable. The valve closure mechanism includes a pulley, a load plate, a cable, and a spring. The pulley is coupled to a valve element is the outflow valve and is configured to eccentrically rotate therewith. The cable has a first end coupled to the pulley, and a second end coupled to the load plate. The spring is disposed between the valve and the load plate and surrounds a portion of the cable. The spring is configured to supply a bias force, via the load plate and the cable, to the pulley that biases the valve element toward the closed position.

Abstract: A valve construction for use with a holding or waste removal tank of a vehicle is provided and includes a gate valve having a valve closure member, and at least one panel having an opening extending from an inside surface to an outside surface connected to the vehicle. Also provided is an axially moveable cable with a first end connected to the gate valve to impart movement to the valve closure member and a second end having a terminus, and a first and second means for securing the second end to the panel. The first means is radially contractible and expandable for penetrating the opening by contracting as it is moved to penetrate through the inside surface of the panel and expanding as it is moved to exit the opening through the outside surface of the panel whereupon it abuts the outside surface. The second means adapts to tightly abut the inside surface of the panel to cooperate with the first means to enable the secure mounting of the second end of the cable to the panel.

Abstract: A hand trigger (16) is pivotally mounted on the handlebar (12) of the striper (14). A pair of selectors (26) are pivotally mounted at the trigger pivot points. The selectors (26) are made from a spring or spring-like steel, which allows the selectors (26) to springingly deform for gun selection and adjustment yet return to their original position and shape. This allows delayed gun activation, disabling of one or both guns from the trigger (16) and functioning as a one-handed gun selector.

Abstract: An improved assembly for use in an in-line starter valve. A flexible material system in the form of a flexible belt is used to translate motion from a manually operable wrench shaft to a piston rod in order to render an in-line starter valve to a closed, partially opened, or an extreme opened position. When the wrench shaft is manually rotated, tension is imparted on the flexible band which, in turn, translates tension to a piston rod which then travels longitudinally resulting in the opening or closing of the in-line starter valve. An index mark on a handle of the wrench shaft indicates the closed, partially opened, or extreme opened position of the in-line starter valve. The use of the flexible belt affords greater durability, less weight, and less costly production than the prior art assemblies.

Abstract: A pilot operated shutoff valve system with leak detector for automatically shutting off a water supply to appliances such as a clothes washing machine, dishwashing machine, sink, toilet, or refrigerator equipped with an ice maker, comprising a sealing member movable within said valve body between an open position wherein the sealing member does not block main fluid flow, and a closed position wherein the sealing member blocks main fluid flow.

Abstract: The present invention relates to a valve having a base body with a passage opening, a movable valve member for closing and opening the passage opening and an actuating mechanism for moving the valve member in order to open the passage opening. The actuating mechanism has at least two elements made from a shape memory alloy which are secured to the base body or a carrier body connected thereto, and can be alternately shortened in the event of the temperature rising above a threshold temperature and are connected to the valve member in such a way that the valve member can be moved from a position on the passage opening into a position alongside the passage opening when one element is shortened on one side and can be moved back into the position on the passage opening when the other element is shortened on one side.

Abstract: A valve, e.g. of an aircraft drinking water system, has a rotatable adjusting shaft to adjust the valve between its open end position and its closed end position. A mechanism for operating the adjusting shaft includes a push-pull cable connected to a toothed rack that engages a toothed gear element secured to the adjusting shaft. The mechanism converts the push-pull linear motion of the cable to a reciprocating rotational motion of the adjusting shaft. End sections of the rack and the gear element have no gear teeth, so the rack automatically disengages from the gear element once the end position of the valve is reached. The disengaged rack can slide beyond the stopped end position of the gear element, and re-engages with the gear element once it slides back into the operating range. The valve cannot be forced beyond its end positions, despite excessive input motion of the cable.

Abstract: A regulating vacuum valve comprises a valve body with a through-channel a closure member which is adjustable over a control path between a closed position of the regulating vacuum valve in which it contacts a valve seat and closes the through-channel and an open position of the regulating vacuum valve in which it is raised from the valve seat, an adjusting device which has a drive unit for adjusting the closure member over the control path, a carrying unit which carries the closure member and is supported so as to be displaceable relative to the closure member. The carrying unit is arranged in the through-channel and is secured to the valve body, and the carrying unit has a chamber which is sealed relative to the through-channel and in which the adjusting device or at least a portion thereof is arranged.