131results about How to "Enhanced closing force" patented technology

A valve unit capable of being implanted in a patient and having adjustable performance settings, such as pressure settings and / or flow control, to regulate passage of a bodily fluid. A casing defines a port for the bodily fluid, and a valve mechanism positioned at the port includes a movable valve member. The valve unit further includes a rotor disposed at a first location in the casing and having an axle which turns about an axis of rotation. The rotor defines a plurality of arcuate, radially flat cam surfaces. Each cam surface occupies an arc about the axis of rotation. A spring arm unit is disposed at a second location in the casing having a cam follower arm in slidable contact with the cam surfaces of the rotor and having a resilient spring element applying a closing effect with the movable valve member to establish a performance setting for the valve unit. Sufficient rotation of the rotor to change the cam surface in contact with the cam follower alters the closing effect with which the valve member moves relative to the port and thereby alters the performance setting of the valve unit.

A failsafe workholding clamping assembly includes a base, an axially slidable draw bar and collet, and a force amplifier. A driver applies a continuous driving force to the force amplifier. The force amplifier amplifies the driving force and applies a resulting amplified force to the draw bar to bias the draw bar toward its closed position and the collet toward its gripping position. A collet opener mounts to the base and selectively applies an opening force to the draw bar to counteract the driving force and move the collet into its released position. The workholding clamping assembly holds a collet in a predetermined rotational orientation and includes a draw bar rotating mechanism to enable an operator to rotate the draw bar to threadingly engage the draw bar and a rotationally-fixed collet.

A vacuum valve comprises a valve housing which has an inlet opening and an outlet opening, a valve disk which is located in the interior space of the valve housing and which is arranged at a carrying arm that is rigidly connected to a shaft which, for purposes of opening and closing the vacuum valve, is rotatable around its longitudinal axis and displaceable in axial direction, and a driving device for opening and closing the vacuum valve. The driving device comprises a rotary drive for rotating the shaft. The driving device further comprises a driving piston which is arranged in an inner cavity of the valve disk and which has, at least over portions of its circumference, a radial extension which is larger than the outlet opening with respect to the center longitudinal axis of the outlet opening and at which tappets are arranged on the side facing the outlet opening. The tappets are guided out of the inner cavity of the valve disk and are supported in the closed position of the valve disk at the valve housing in the area next to the outlet opening and press the valve disk against the valve seat and can be lifted from the valve housing for displacing the valve disk from its closed position into its intermediate position by means of a displacement of the driving piston. At least one spring element displaces the valve disk into its intermediate position by an axial displacement of the shaft.

A vacuum valve comprises a valve housing which has an inlet opening and an outlet opening, a valve disk which is located in the interior space of the valve housing and which is arranged at a carrying arm that is rigidly connected to a shaft which, for purposes of opening and closing the vacuum valve, is rotatable around its longitudinal axis and displaceable in axial direction, and a driving device for opening and closing the vacuum valve. The driving device comprises a rotary drive for rotating the shaft. The driving device further comprises a driving piston which is arranged in an inner cavity of the valve disk and which has, at least over portions of its circumference, a radial extension which is larger than the outlet opening with respect to the center longitudinal axis of the outlet opening and at which tappets are arranged on the side facing the outlet opening. The tappets are guided out of the inner cavity of the valve disk and are supported in the closed position of the valve disk at the valve housing in the area next to the outlet opening and press the valve disk against the valve seat and can be lifted from the valve housing for displacing the valve disk from its closed position into its intermediate position by means of a displacement of the driving piston. At least one spring element displaces the valve disk into its intermediate position by an axial displacement of the shaft.

A wire harness fixing device designed to enable convenient installation thereof within an inner liner of a refrigerator while effectively preventing leakage of a foam insulation material filled between the inner liner and an outer liner of the refrigerator. The wire harness fixing device comprises a housing including an insert part provided at one end of the housing and inserted through a fixing hole formed in the inner liner, and an interior part positioned at the other end within the inner liner. A latch is provided on the insert part that engages an outer surface of the inner liner at the fixing hole when the insert part is inserted into the fixing hole, and a cover of a flexible material integrally formed to the housing at the interior part side to cover the fixing hole, the cover being subjected to elastic deformation to closely contact an inner surface of the inner liner at the fixing hole side when the latch is latched to and supported by the inner liner.

The invention relates to an air control valve for internal combustion engines comprising a turbocharger, the air control valve being placed inside a bypass channel between a pressure side and an intake side of a boost pressure pump of the turbocharger, a housing which comprises an electromagnetic drive unit and a valve unit movable in said housing, said valve unit essentially comprising a valve rod and a valve closing body attached thereto and having a circular sealing element, wherein means are provided that keep the moving valve unit in a closed position when no current is supplied to said valve unit, wherein at least one pressure compensation opening is provided at the moving valve unit, wherein the valve closing body has a cylindrical lateral surface which cooperates with means in such a manner that a housing interior is sealed towards the pressure side or the intake side.

A narrow profile surgical ligation clip has two legs with clamping surfaces joined by a hinge near the proximal ends, allowing the clip to reversibly open and close. A locking mechanism is proximal to the hinge to bias or lock the clip closed, including first and second jaw structures spaced on opposite sides of a longitudinal axis of the clip thereby defining a locking space therebetween. In one embodiment, a wedge or buttress body moves by application of an external force applied to a proximal end of the clip towards the hinge to move into the locking space such that one or more outer surfaces or projections of portions of the body fit into or abut against complementary surfaces or other parts of the locking mechanism or clip assembly to bias or lock the clip in a closed position and provide additional closing force to the inner clamping surfaces.

A textile sleeve for routing and protecting elongate members and method of construction thereof is provided. The sleeve includes an elongate wall having opposite edges extending parallel to a central axis of the sleeve. The wall is woven with warp yarns extending parallel to the axis and fill yarns extending transverse to the warp yarns. The warp yarns include monofilament yarns within an intermediate region of the wall and multifilament yarns within opposite edge regions of the wall to enhance abrasion resistance and curl, respectively, and the fill yarns include monofilament yarns larger in diameter than the fill monofilament yarns to provide further abrasion resistance, enhanced curl strength and multifilament yarns to provide increased coverage, maintain flexibility, and to maintain the warp monofilaments in their intended position.

A failsafe workholding clamping assembly includes a base, an axially slidable draw bar and collet, and a force amplifier. A driver applies a continuous driving force to the force amplifier. The force amplifier amplifies the driving force and applies a resulting amplified force to the draw bar to bias the draw bar toward its closed position and the collet toward its gripping position. A collet opener mounts to the base and selectively applies an opening force to the draw bar to counteract the driving force and move the collet into its released position. The workholding clamping assembly holds a collet in a predetermined rotational orientation and includes a draw bar rotating mechanism to enable an operator to rotate the draw bar to threadingly engage the draw bar and a rotationally-fixed collet.

A container is provided for storing items in a vacuum state. The container includes a receptacle with associated lid. A lever and clamp act together as a toggle to exert a relatively high closure force on the lid. The container includes a vacuum pump, preferably within a base of the container. A switch is provided to activate and deactivate the pump which is activated by the lever when the lever is pivoted to a closed position. A sensor is optionally also provided to shut off the pump when a sufficiently low pressure is reached. The lid includes a bleed port which is closed by the clamp when the lid is closed. When the lever and clamp are pivoted to an open position, this bleed port is opened so that pressure equalization occurs and the lid can be easily opened without fighting atmospheric pressure forces acting on the lid.

A vehicle stowage assembly is provided that includes a compartment having an opening to allow access to the opening and a door proximate the opening. A ferrous member magnets are disposed on the compartment and the door to magnetically couple the magnets to the ferrous member when the door is in the closed position. A crash sensor is provided for detecting an expected vehicle crash event. An electromagnetic coil electromagnetically is coupled to the ferrous member, wherein the coil is electrically energized by current to create a polarity on the ferrous bar to create an increased force closure to the door relative to the housing when an expected vehicle crash is detected. The coil generates an opposite polarity on the ferrous member to open the door in response to a user actuated input.

In a method for operating an actuator for a wastegate actuating device of an exhaust gas turbocharger, a wastegate situated in an exhaust branch of an internal combustion engine is electrically adjustable with the aid of the actuator, and an exhaust gas quantity flowing through the exhaust gas turbocharger is adjustable as a function of an opening position of the wastegate. The actuator is controlled using an applied electrical power in a closed position of the wastegate to provide a varying closing pressure of the wastegate as a function of a characteristic curve of an exhaust gas counterpressure applied via the wastegate.

A hinge apparatus having an automatic return function for building materials is provided, in which a return spring is removed to thereby offer a closing force of each door with only a torsion spring. The hinge apparatus includes an upper body; a lower body; a shaft whose lower end portion is rotatably installed in the lower body; a piston whose outer circumference is slidably installed along the inner surface of the lower body, a rotational / linear motion converter which converts a rotational motion of the shaft into an axial linear motion of the piston according to rotation of the door; a damping unit which provides a damping function selectively where the piston ascends according to return of the door; a torsion spring which rotates the shaft in the direction returning the door at the closing time; and a clutch unit for stopping an increment of an elastic force due to reverse twisting of the spring where an opening angle reaches a clutch stop start angle, or for restoring the elastic force of the spring.

A compression garment, for example a pair of compression shorts (10, 210, 310), has a trunk section (20), a left leg section (30) and a right leg section (40) constructed from a resilient material. The trunk section (20) is reinforced such that a wearer's pelvic region is subjected to a first compressive force acting diagonally across a front portion of the trunk section from left to right and a second compressive force acting diagonally from right to left. The range of motion at the wearer's hips is preferably not restricted by the reinforcement.

The invention relates to a carburetor arrangement of a portable handheld work apparatus and includes a carburetor (1), an accelerator pump (2) and a venting pump (3). The venting pump (3) acts on the accelerator pump (2) via a venting line (4). A check valve (5) is mounted in the venting line (4) in such a manner that its outlet end (6) is directed in the direction of the venting pump (3). A pretensioning device (7) is provided which holds a valve body (8) of the check valve (5) closed below a selected difference pressure between the outflow end (6) and an opposite-lying inflow end (9). A support device (10) which acts on the valve body (8) and is actuable, at one end, by pressure at the outflow end (6) without considering pressure at the other end (9) or by pressure on the inflow end (9) without considering the pressure on the other end (6).

A container comprising a snap-in closure disposed between an upper part and a lower part of the container, the snap-in closure having a relatively strong holding or locking force and able to be opened relatively easily. The snap-in closure comprises a snap-in tab constructed out of the wall of one part of the container and detached along three sides, with a snap-in key disposed at the upper free end of the said snap-in closure and able to engage in a coordinated snap-in slit at the opposite container part.