34results about How to "Reduced actuation force" patented technology

A locking mechanism for a wind turbine decelerates and/or locks a rotor or a rotor shaft of the wind turbine. For maintenance work, the rotor or the rotor shaft is lockable to a machine support of the wind turbine in a form-fit manner by utilizing the locking mechanism. A rotational position of the rotor shaft is automatically detected in a DESIRED position. Moreover, the locking mechanism is configured to be automatically engaged when the DESIRED position has been reached. The locking mechanism additionally has at least one deceleration device for affecting the drive train and/or allowing the rotational speed of the rotor and the rotor shaft to be reduced.

A lever-type electrical connector assembly is provided that includes first and second electrical connectors having an actuating lever movably mounted thereon for movement between a release position with the connectors un-mated and a lock position with the connectors mated. In one form, a blocking member is provided between the first connector and the actuating lever for holding the actuating lever in the release position. A second connector includes a release member for shifting the blocking member to allow the actuating lever to move from the release position to the lock position. In another form, the electrical connector assembly is configured to precisely maximize the mechanical advantage provided by the actuating lever by including a predetermined force transmitting engagement portion at which the lever actuator engages one of the connectors to transmit a concentrated, predetermined leveraged output force thereto upon pivoting of the lever from the release to the lock position.

The invention relates to a wedge-shaped automobile brake device based on proportional electromagnet driving. The device is mainly composed of a wedge block upper outer cover, a wedge block lower outer cover, an outer wedge-shaped block, an inner wedge-shaped block, a proportional electromagnet stator, a proportional electromagnet permanent magnet, balls, a brake caliper support, a brake caliper, a floating piston, an inner brake lining, an outer brake lining and a brake disc. A wedge-shaped friction self-force-amplifying mechanism in the mechanism achieves the friction self-force-application effect, and greatly reduces brake promotion force. The promotion force of the wedge-shaped mechanism is provided by a floating proportional electromagnet, and force can be exerted in two directions so that braking force control for the advancing working condition of an automobile and the backing up working condition of the automobile can be achieved. Accurate delivery of frictional force and positive pressure in the braking process is achieved through floating supporting of the piston, the inner brake lining and the outer brake lining, control accuracy of the braking force is guaranteed, self-adjusting of brake clearance is achieved through a return rubber seal ring, most parts of a traditional disc brake is reserved, and the wedge-shaped automobile brake device is simple in structure, compact in system, low in cost and easy to achieve.

The invention relates to a power generation device (1) that includes an excitation coil (2) with a central opening, and a magnetic circuit (3) extending through the central opening of the coil and including at least one permanent magnet (4a, 4b, 6) and a plurality of ferromagnetic members (33, 34, 32, 40) arranged in a fixed portion and two mobile portions (30a, 30b), characterized in that the two mobile portions (30a, 30b) are mounted on two parallel rotary axes and can each assume two positions, in that the device includes means for rotating (5, 50) the two mobile portions (30a, 30b) between the two positions thereof so as to create two states of the magnetic circuit (3), i.e. a first state in which a magnetic flow (F1) flows through the coil in one direction and a second state in whicha magnetic flow (F2) flows through the coil in the opposite direction.

The invention refers to a mechanical coolant pump ( 10) for an internal combustion engine. The pump 10 comprises an impeller pump wheel ( 14) pumping the liquid coolant incoming in axial direction radially into an outlet volute ( 16), a pump housing (12) including a outlet volute housing (13) defining the outlet volute (16) including a first outlet channel (18), and an outlet valve arrangement in the route of the first outlet channel ( 18). The outlet valve arrangement comprises valve flap (30) being pivotable between an open position and a closed position to leave open or close a valve opening (19) of the outlet channel (18). The valve opening ( 19) is defined and surrounded by a valve seat (64) defining a valve seat plane (60) and a symmetry plane (62) in the middle of and rectangular to the valve seat plane (60). A valve flap (30) is provided with a flap seat (66) corresponding to the valve seat (64). The valve flap (30) is rotatable around a pivot axis (31) which is in parallel to the symmetry plane (62) and is located with a lateral eccentricity (E) from the symmetry plane (62), whereby the lateral eccentricity (E) is between 1/20 and 1/1 of the pivot axis' distance (D) to the valve seat plane (60).

A drivetrain of an electrically driven vehicle has a frictionally engaging normally closed clutch with conical friction elements, which rest against each other in pairs in a closed position and transmit torque. In addition, an electrically driven vehicle with such a drivetrain is provided.

The invention relates to a parking brake device comprising a spring element and an actuating element that acts upon the spring element, wherein by applying an actuating force to the actuating element the parking brake device is transferrable between a brake-inactive release position and a brake-active parking position. In the invention, it is provided that the spring element is biased in the release position and that the spring element upon transfer from the release position to the parking position yields only upon attainment of an actuating-force threshold value that is determined by the bias.

A lever for moving first and second brake shoes into engagement with a drum to effect a brake application. The lever has a first end connected to the brake shoes and a second end with a tine fixed thereto to which a cable is connected to apply an input force to effect a brake application. A predetermined force is applied to the tine to deflect the tine and a tab engages the lever to hold the tine in the deflected position. The tine and second end of the lever move in unison in response to an input force until the input force exceeds the predetermined force such that while the tine and cable continue to move in unison the deflection of the tine proportionally reduces the movement of the first end of the lever and as a result an actuation force applied to effect a brake application is correspondingly reduced.

A proportional valve includes a valve assembly including a valve body that houses a valve operator. The valve body defines an inlet and an outlet for a fluid flow through the valve body. The valve operator has a longitudinal axis and includes a poppet that is moveable along the longitudinal axis between a closed position and an open position. The proportional valve further includes an actuator, wherein the actuator comprises an actuator housing that houses: a first magnet element and a second magnet element; a non-magnetic carrier in which the first magnet element and the second magnet element are mounted; a first wire coil located adjacent to the magnet elements and a second wire coil located adjacent to the magnet elements on an opposite side of the magnet elements relative to the first wire coil; a first spring beam to which the non-magnetic carrier is suspended adjacent to the first magnet element, and a second spring beam to which the non-magnetic carrier is suspended adjacent to the second magnet element; and a flux frame that conducts magnetic field lines through the actuator. When the wire coils are energized, a magnetic field is created which causes the non-magnetic carrier to move against the valve operator to move the valve poppet away from the closed position against the valve seat, thereby opening the valve. The first and second spring beams restrain the movement of the non-magnetic carrier to an arc of sufficient radius that said movement is quasi-linear.

An improved butterfly valve having (a) a valve housing, (b) a valve-plate having a peripheral edge located in a central plane when in a fully-closed position, (c) a valve stem configured to rotate the valve-plate about an axis parallel to the central plane to control flow through the valve, and (d) a valve seat configured to engage the peripheral edge to form a seal when the valve-plate is in closed positions, the improvement wherein the valve seat comprises (1) a resilient sealing member having an inward valve-seating surface engaging the peripheral edge therearound and an opposite outward surface; and (2) a ring structure: (i) having an inner surface adjacent to the outward surface; (ii) having the valve stem passing therethrough along the axis; (iii) divided into two sub-ring portions adjacent to each other with valve-stem-adjacent ends; and (iv) sized to permit central-plane-parallel relative sub-ring-portion displacement perpendicular to the axis, thereby lowering valve actuation force.

The invention relates to a bolting device having two bolts which are held rotationally secure and coupled to each other via a spindle element, wherein: a first bolt is connected via a threaded engagement to a corresponding thread of the spindle element; rotating the spindle element about its central longitudinal axis causes the first bolt to move along the longitudinal axis; and a second bolt is rotationally mounted on the spindle element in a fixed axial position. The invention also relates to a crane jib head comprising such a bolting device, for bolting a lattice masthead to a head adaptor.