Patent application number | Description | Published |
20100206579 | FAIL AS IS MECHANISM AND METHOD - A technique enables failsafe control over actuators used to actuate downhole tools. The technique may utilize a well system having a tool with an adjustable member. An actuation mechanism serves as a fail-as-is mechanism and works in cooperation with the adjustable member. The actuation member is shiftable upon receiving a predetermined input; however the actuation member does not move the adjustable member upon each shift. Once the actuation member has been shifted the requisite number of times to move the adjustable member to another position, at least one subsequent shift of the actuation member is not able to cause movement of the adjustable member. The result is a fail-as-is technique for ensuring the tool is not inadvertently actuated to another operational position. | 08-19-2010 |
20100212882 | LINEARLY ACTUATED HYDRAULIC SWITCH - A switching apparatus, system, and method configured to operate at least a dual line downhole tool via a single pressure source are provided. The switching apparatus may comprise a housing configured to contain a switching piston actuated by a fluid pressure source. The apparatus may further contain a switching valve comprising a first and second coupling passageway coupled to a switching valve housing comprising four ports. The switching piston may actuate the switching valve, alternating the coupling between a first configuration in which the four ports are communicatively coupled into two sets of ports and a second configuration in which the four ports are communicatively coupled into an alternate two sets of ports. The first configuration may configure the fluid pressure source to actuate the downhole tool in a first manner and the second configuration may configure the fluid pressure source to actuate the downhole tool in a second manner. | 08-26-2010 |
20110203801 | SYSTEM AND METHOD FOR FORMATION ISOLATION - A technique employs a formation isolation valve that utilizes a ball rotatably mounted within a valve housing. The valve is designed to enable rotation of the ball about a fixed axis without translation of the ball. Rotation of the ball is achieved by connecting an arm to the ball at a position offset from the axis of rotation. A movable mandrel also is connected to the arm to enable selective actuation of the ball. | 08-25-2011 |
20120261137 | FLOW CONTROL SYSTEM - A technique facilitates controlling flow of fluid along a flow passage. A flow control assembly is placed along a flow passage, and a bypass is routed past the flow control assembly. Flow along the bypass is controlled by a flow bypass mechanism which may be operated via a pressure or other interventionless application. The pressure, or other interventionless application, is used to actuate the flow bypass mechanism so as to selectively allow flow through the bypass. | 10-18-2012 |
20130105172 | PRESSURE CYCLE INDEPENDENT INDEXER AND METHODS | 05-02-2013 |
20130327537 | FLOW CONTROL SYSTEM WITH VARIABLE STAGED ADJUSTABLE TRIGGERING DEVICE - Techniques and equipment to facilitate controlling flow of a fluid along a flow passage. A flow control assembly is placed along a flow passage, and a bypass is routed past the flow control assembly. Flow along the bypass is controlled by a flow bypass mechanism which may be operated via pressure increase within the flow control assembly. A shear device restricts the opening of the bypass, and a dampening device acts to limit the shear device to exposure of forces from the pressure increase. | 12-12-2013 |
Patent application number | Description | Published |
20080293334 | METHODS AND APPARATUS FOR USING A BEVEL POLISHING HEAD WITH AN EFFICIENT TAPE ROUTING ARRANGEMENT - Apparatus and methods are provided to polish an edge of a substrate. The invention includes a polishing head, adapted to contact an edge of a substrate, wherein the polishing head includes one pair of front guide rollers and two pairs of back clamping rollers. Numerous other aspects are provided. | 11-27-2008 |
20080293340 | METHODS AND APPARATUS FOR REMOVAL OF FILMS AND FLAKES FROM THE EDGE OF BOTH SIDES OF A SUBSTRATE USING BACKING PADS - Apparatus and methods are provided to polish an edge of a substrate. The invention includes a polishing head adapted to retain a backing pad having a selected contour, wherein the polishing head is adapted to press the backing pad against an edge of a substrate. Numerous other aspects are provided. | 11-27-2008 |
20080293341 | METHODS AND APPARATUS FOR USING A ROLLING BACKING PAD FOR SUBSTRATE POLISHING - An apparatus and method are provided to polish an edge of a substrate. The invention includes a polishing head including a backing pad, wherein a width of the backing pad that contacts the substrate edge is larger than a width of a notch in the substrate edge. Numerous other aspects are provided. | 11-27-2008 |
20090264053 | APPARATUS AND METHODS FOR USING A POLISHING TAPE CASSETTE - Methods and apparatus are provided for housing a polishing tape adapted to polish a substrate. The invention includes a cassette comprising a body portion; and a head portion, wherein the head portion includes: a pair of guide walls; one or more supply rollers positioned between the guide walls in the head portion; and wherein the guide walls are adapted to guide a polishing tape housed in the body over the one or more supply rollers. Numerous other aspects are provided. | 10-22-2009 |
20090320875 | DUAL CHAMBER MEGASONIC CLEANER - Embodiments described herein relate to semiconductor device manufacturing, and more particularly to a vertically oriented dual megasonic module for simultaneously cleaning multiple substrates. In one embodiment, an apparatus for cleaning multiple substrates is provided. The apparatus comprises an outer tank for collecting overflow processing fluid comprising at least one sidewall and a bottom. A first inner module adapted to contain a processing fluid is positioned partially within the outer tank. The first inner module comprises one or more roller assemblies to hold a substrate in a substantially vertical orientation. A second inner module adapted to contain a processing fluid is positioned partially within the outer tank. The second inner module comprises one or more roller assemblies adapted to hold a substrate in a substantially vertical orientation. Each inner module contains a transducer adapted to direct vibrational energy through the processing fluid toward the substrates. | 12-31-2009 |