| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 251212000 | RELATIVELY MOVABLE VALVE ELEMENTS FORM SINGLE PORT CLOSURE (E.G., IRIS DIAPHRAGM) | 7 |
| 20090302252 | Virtual variable valve intake and exhaust for the internal combustion engine - A device is created with an adjustable aperture or orifice using the iris shutter type mechanism to control the volumetric flow of fuel mixture or exhaust gas by movable blades or leaflets arranged inside a sealed enclosure which is operated by external actuators connected in series. | 12-10-2009 |
| 20120068097 | METHOD FOR OPERATING A VALVE - A method for operating a valve comprising a first valve part (1) having at least one opening (2, 5) formed therein and a second valve part (3) having at least one opening (4, 6) formed therein is disclosed. The first (1) and second (3) valve parts are adapted to perform relative movements, the relative position of the opening(s) (2, 5) of the first valve part (1) and the opening(s) (4, 6) of the second valve part (3) defining an opening degree of the valve by means of an overlapping area of an opening (2, 5) of the first valve part (1) and an opening (4, 6) of the second valve part (3). The method comprises the step of moving the first valve part (1) and/or the second valve part (3) from a position defining a maximum opening degree of the valve towards a position defining a minimum opening degree of the valve in such a manner that the velocity of the relative movement between the first valve part (1) and the second valve part (3) varies as a function of an overlapping area between an opening (2, 5) of the first valve part (1) and an opening (4, 6) of the second valve part (3), in such a manner that the velocity is decreased as the overlapping area decreases. Operating the valve in this manner causes water hammering to be reduced, while ensuring appropriate operation and acceptable response times of the valve. | 03-22-2012 |
| 20090072176 | Valve Device - The invention relates to a valve device, preferably for a line device or connecting device. Said valve device comprises a valve body that can be transferred from an open position to a closed position. Said valve body comprises movable sectored devices having sealing edges or sealing surfaces via which, in a closed position, a sealing contact of the sectored device to adjoining sealing edges or sealing surfaces can be established. The sectored devices can at least be in sections moved away in the radial direction from the centre axis when the valve body is transferred to the open position and release a flow area. | 03-19-2009 |
| 20100314569 | Actuator for a fan-powered damper - An HVAC (heating, ventilating and air conditioning) damper includes a series of pivotal damper blades that are opened by an air pressure differential across opposite sides of the damper. In some embodiments, a fan discharging against the damper blades provides the necessary air pressure to open the damper. To control how far the damper opens, an actuator moves a variable position abutment that obstructs the damper blades to limit how far they can pivot in the open direction. The position of the abutment is infinitely adjustable to provide the damper with infinite adjustment over a range of open positions. In some embodiments, the abutment applies a unidirectional torque to the damper blades regardless of whether the damper is opening or closing. | 12-16-2010 |
| 20120305818 | ACTIVE AERO SHUTTERS - A shutter set includes a first vane and a first vane stop. The first vane is moveable between a first position and a second position. The first vane stop is selectively moveable between a locking position and a free position, relative to the first vane. The first vane stop is configured to apply a bias force or is configured to bias the first vane by a predetermined clearance distance when the first vane stop is in the locking position, and is configured to allow movement of the first vane between the first position and the second position when the first vane stop is in the free position. | 12-06-2012 |
| 20120112108 | Split Valve - A split valve apparatus for the control, charging, discharging and/or regulating the flow of powders, liquids, slurries and/or fluids. The valve has two valve portions complementarily shaped such that the first can sealingly engage with and co-operate with the second to allow the flow of material therethrough. Each valve portion comprises a housing, a valve seat and a valve closure member, which is movable between two positions. | 05-10-2012 |
| 20080217567 | APPARATUS TO VARY EFFECTIVE SPRING RATE FOR USE IN DIAPHRAGM ACTUATORS - Apparatus to vary the effective spring rate of diaphragm actuators are described. An example spring assembly for use in a diaphragm actuator includes a first spring operatively coupled to a diaphragm plate and an actuator stem, and a second spring operatively coupled to the actuator stem and configured to be serially operative with the first spring. Additionally, a movable spring seat is disposed between the first and second springs. | 09-11-2008 |
