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Fishwick
James Fishwick, Wigan GB
| Patent application number | Description | Published |
|---|---|---|
| 20090272442 | FLUID FLOW CONTROL DEVICE - A fluid flow control device such as a volume booster has an inlet, an outlet and an exhaust port all for an operating fluid. A pilot inlet receives a pilot pressure signal which operates a valve stem actuator via a diaphragm assembly. The valve stem is operable to open a supply valve between the inlet and outlet and, separately and independently, to open an exhaust valve disposed between the outlet and the exhaust. In a further position both the valves are closed. Movement of the stem in a reciprocal manner by the diaphragm assembly causes a respective annular shoulder to engage a respective valve and lift it off a valve seat against the force of a biasing spring. A first fluid leak path is provided between the valve stem and the supply valve for allowing fluid to leak through the supply valve chamber when the supply valve is open and a second fluid leak path is defined by the exhaust valve for allowing fluid to leak through the exhaust valve chamber. The leak paths provide for a force balancing arrangement that allows the valve stem to move easily and the diaphragm assembly to be reduced in size. The arrangement allows the exhaust port to be positioned on the same side of the diaphragm assembly as the inlet and outlet so that fluid can be vented through the exhaust at flow volume comparative to the operating fluid flow in the inlet and outlet. | 11-05-2009 |
| 20090283160 | FLUID FLOW CONTROL DEVICE AND CONTROL CIRCUIT - A fluid flow control device such as a volume booster has an inlet, an outlet and an exhaust port all for an operating fluid. A pilot inlet receives a pilot pressure signal which operates a valve stem actuator via a piston. The valve stem is operable to open a supply valve between the inlet and outlet and, separately and independently, to open an exhaust valve disposed between the outlet and the exhaust. In a further position both the valves are closed. Movement of the stem in a reciprocal manner by the piston causes a respective annular shoulder to engage a respective valve and lift it off a valve seat against the force of a biasing spring. A first fluid leak path is provided between the valve stem and the supply valve for allowing fluid to leak through the supply valve chamber when the supply valve is open and a second fluid leak path is defined by the exhaust valve for allowing fluid to leak through the exhaust valve chamber. The leak paths provide for a force balancing arrangement that allows the valve stem to move easily. A quick exhaust feature allows exhaust flow through the device instead of using a separate component. A regulated flow is provided to the actuator. The size of the exhaust port may be modulated by pilot control pressure. | 11-19-2009 |
| 20100059129 | FLUID FLOW CONTROL APPARATUS - A main control valve is actuated by a pilot fluid control signal between open and closed positions to supply fluid to an actuator such as a valve actuator. A stack of logic control valves is supported on the main valve- and controls the flow of the pilot signal. Each of the logic control valves has a housing of common design. Intermediate flow-directing plates of different designs provide fluid communication between adjacent housings. The stack has a common pilot feed passage and a common exhaust passage that are each defined by an annular clearance around supporting tie bars that pass through bores in the stack. Each plate has apertures that form part of the exhaust and pilot feed passages and an aperture that interconnects the returning pilot signal with the pilot inlet of the next valve in the stack. The arrangement allows for simplification of the design of the apparatus with a single housing design and multiple plate designs. | 03-11-2010 |
Paul Anthony Fishwick, Gainesville, FL US
| Patent application number | Description | Published |
|---|---|---|
| 20100159434 | Mixed Simulator and Uses Thereof - The subject invention provides mixed simulator systems that combine the advantages of both physical objects/simulations and virtual representations. In-context integration of virtual representations with physical simulations or objects can facilitate education and training. Two modes of mixed simulation are provided. In the first mode, a virtual representation is combined with a physical simulation or object by using a tracked display capable of displaying an appropriate dynamic virtual representation as a user moves around the physical simulation or object. In the second mode, a virtual representation is combined with a physical simulation or object by projecting the virtual representation directly onto the physical object or simulation. In further embodiments, user action and interaction can be tracked and incorporated within the mixed simulator system to provide a mixed reality after-action review. The subject mixed simulators can be used in many applications including, but not limited to healthcare, education, military, vocational schools, and industry. | 06-24-2010 |
Steven Fishwick, Kings Langley GB
| Patent application number | Description | Published |
|---|---|---|
| 20110206124 | Object tracking using graphics engine derived vectors in a motion estimation system - A method and apparatus are provided for motion estimation in a sequence of images. One or more motion vectors representing movement of a camera or viewer position or direction are determined between each pair of fields or frames in the sequence of images. A set of candidate motion vectors is then determined for deriving positions of objects in a field or frame from the positions of objects in a previous field or frame. This set of candidate motion vectors is adjusted using the motion vectors representing movement of camera or viewer position and thus a set of motion vectors is derived for a sequence of images using the adjusted set of candidate motion vectors. | 08-25-2011 |
Steven John Fishwick, Kings Langley GB
| Patent application number | Description | Published |
|---|---|---|
| 20100271484 | Object tracking using momentum and acceleration vectors in a motion estimation system - There is provided a method and apparatus for motion estimation in a sequence of video images. The method comprises a) subdividing each field or frame of a sequence of video images into a plurality of blocks, b) assigning to each block in each video field or frame a respective set of candidate motion vectors, c) determining for each block in a current video field or frame, which of its respective candidate motion vectors produces a best match to a block in a previous video field or frame, d) forming a motion vector field for the current video field or frame using the thus determined best match vectors for each block, and e) forming a further motion vector field by storing a candidate motion vector derived from the best match vector at a block location offset by a distance derived from the candidate motion vector. Finally, steps a) to e) are repeated for a video field or frame following the current video field or frame. The set of candidate motion vectors assigned at step b) to a block in the following video field or frame includes the candidates stored at that block location at step e) during the current video field or frame The method enables a block or tile based motion estimator to improve its accuracy by introducing true motion vector candidates derived from the physical behaviour of real world objects. | 10-28-2010 |