710 results about "Straddle" patented technology

In a marketplace, offers are processed that are intended to be associated with other offers in a pool. The offers specify conditions for acceptance. Improvable offers are received that are capable of being associated with offers having more favorable specifications than initial offers associated with the improvable offers. Nonimprovable offers that have more favorable specifications than initial offers associated with improvable offers are identified. The identified nonimprovable offers are associated with corresponding improvable offers. Straddles, which comprise a set of offers and a limit on the associations, may span multiple pools. Information about the marketplace may be obtained from data generated by the operation of the marketplace.

A flow responsive dump valve mechanism for a straddle packer tool and has a valve controlled flow passage from which underflushed fluid, typically well treatment slurry, in a conveyance and fluid supplying tubing string can be dumped into a well casing. The dump valve mechanism incorporates a ratcheting power piston, an indexing mechanism and high and low load energy storage systems to accomplish open, closed and intermediate dump valve positions. The intermediate position increases the functionality of the tool by preventing accidental closure either due to the free fall of fluid through the coiled tubing or during flushing of the tool and permits the flow rate to be increased for thorough cleaning of the straddle tool and coiled tubing. For energy storage, a light compression spring provides power to cycle the indexing mechanism. Heavier load disc springs (Bellville Washers) are used to provide power for the ratcheting power piston to open the valve.

A method of simultaneously reconstructing and testing a straddle-mount turbine blade hub with the turbine blades in place. The method employs a sector scan ultrasonic phased array mounted on one face of the hub to inspect the opposite face.

The present invention relates to straddle packer systems and methods of using them for downhole isolation of zones for fracturing treatment. More specifically, the system includes upper and lower seal systems having resiliently flexible sealing elements hydraulically and operatively connected to one another which are responsive to an increase in hydraulic pressure for setting the sealing elements at a first hydraulic pressure threshold. Additionally, the system includes a control system hydraulically and operatively connected between the upper and lower packer systems which is responsive to an increase in hydraulic pressure at a second hydraulic pressure threshold higher for activating a pressure switch system within the control system for opening at least one frac valve in the control system.

A flow responsive dump valve mechanism for a straddle packer tool and has a valve controlled flow passage from which underflushed fluid, typically well treatment slurry, in a conveyance and fluid supplying tubing string can be dumped into a well casing. The dump valve mechanism incorporates a ratcheting power piston, an indexing mechanism and high and low load energy storage systems to accomplish open, closed and intermediate dump valve positions. The intermediate position increases the functionality of the tool by preventing accidental closure either due to the free fall of fluid through the coiled tubing or during flushing of the tool and permits the flow rate to be increased for thorough cleaning of the straddle tool and coiled tubing. For energy storage, a light compression spring provides power to cycle the indexing mechanism. Heavier load disc springs (Bellville Washers) are used to provide power for the ratcheting power piston to open the valve.

An all terrain or straddle type vehicle is provided with an air intake system having an air intake pipe with reduced length thereby avoiding unnecessary vibration which may adversely affect the fuel-to-air ratio of the engine, thereby improving engine performance. Also an inlet end of the air intake pipe is positioned so that the vehicle's capability for traversing water of a predetermined depth is improved. The height of the inlet end of the intake pipe is greater than the predetermined depth of the water to protect against water entering the air intake pipe due to encountering a water wave created in front of the vehicle that has a depth greater than the predetermined depth of the water. Additionally, openings in rear fenders of the vehicle channel intake air to both a radiator / fan assembly and the air intake system.

A vehicle control apparatus controls movement of a vehicle in a lateral direction intersecting a direction in which the vehicle travels based on a movement trajectory of a preceding vehicle. The vehicle control apparatus includes a detection unit configured to detect a surrounding environment of the vehicle, and a preceding vehicle which travels ahead in the same lane in which the vehicle travels, a determination unit configured to determine whether or not the preceding vehicle straddles lanes or approaches within a set distance predetermined for the lanes based on lateral movement information of the preceding vehicle detected by the detection unit, and a control unit configured to control lateral movement of the vehicle based on a determination result of the determination unit and detection information of the detection unit.

A transport lift (10) has a base (12) and two spaced-apart legs (30, 32) are slidingly mounted on the base for movement toward and away from each other. Wheels (34, 36, 38) support the base and legs for rolling movement. Leg motor drive means (62) operate to drive the two spaced-apart legs toward and away from each other to vary the straddle spacing between the legs. A lift column (14) extends generally vertically from the base. Lift drive means (16) are associated with the lift column for driving an end effectuator (18) along the lift column, the end of effectuator adapted for engaging a load. A programmable controller (90) operates the lift drive means to position the end effectuator at at least one predetermined height position on the lift column. The controller is adapted for storing a plurality of height adjustments as sequential steps, and the controller operates the lift drive means to place the end effectuator sequentially at the sequence of predetermined height positions.

The invention discloses a packet processing method and packet processing unit. The method setups two data forwarding units, namely a routing unit and an exchanging unit, respectively in charge for data forwarding between different routing interface units and different exchanging interfaces; and each routing interface unit can lookup a routing forwarding table according to forwarding information in a message, accordingly determining an outlet interface and a routing interface unit the outlet interface locating at, thereby realizing the distributed forwarding of wide area networks (WAN) interface, sharing the CPU burden onto each routing interface unit, and improving the processing ability of packet. Each exchanging interface unit in the invention can also lookup the second or third forwarding table according to the forwarding information in the message, accordingly determining an outlet interface and a routing interface unit the outlet interface locating at, rather than only having the hardware forwarding function; the method can realize straddle forwarding aiming at local area network (LAN) by the exchanging unit, when the outlet interface and the inlet interface are not in a same exchanging interface unit.

Engagement of a clutch is at least partially controlled based upon the difference in rotational speed between the drive side of the clutch and the driven side of the clutch. As the rotational speed difference varies, the approach rate of the drive side and the driven side also varies for at least part of the total distance defined between the drive side and the driven side when the clutch is disengaged.

Exemplary embodiments provide an adjustable sensor support structure for optimal skin contact. Aspects of the exemplary embodiments include a sensor array comprising a plurality of sensor units arranged on a band such that the sensor array straddles or otherwise addresses a blood vessel when worn on a measurement site of a user; and a pressure exertion apparatus attached between the sensor units and the band that exerts outward pressure on the sensor units towards the measurement site causing the sensor units to maintain contact with skin of the user independent of motion activity of the band, thereby improving contact quality, wherein the pressure exertion apparatus comprises at least one of: a flexible bridge structure, a flexible foam structure, and a sensor trampoline structure.

The invention discloses a non-adhesion driving structure for a straddle type railway vehicle. The structure comprises a monorail runway track and a bogie which are matched with each other, and is improved in that: the two sides of the monorail runway track are provided with an induction plate respectively; the two sides of the bogie are provided with a linear motor respectively; and the linear motors and the induction plates correspond one to one, and are arranged opposite. The non-adhesion driving structure has the advantages that: the adhesion driving of the conventional straddle type railway vehicle is changed into non-adhesion driving, and the braking and acceleration of the vehicle are finished by an interaction force between the linear motors and the induction plates, so the load of a traveling wheel is decreased, the stability of the structure is improved and the running cost of the vehicle is decreased.

A gear change control device is provided for a straddle-type vehicle having a clutch and a transmission. The device includes a clutch actuator configured to engage and disengage the clutch. A transmission actuator is configured to change a gear of the transmission. At least one sensor is configured to sense an operational condition of the straddle type vehicle. At least one switch is configured to generate a gear change command. A controller is operatively connected to the clutch actuator, the transmission actuator, the at least one sensor, and the at least one switch. The controller is configured to change gears in response to the gear change command and during the gear change reengage the clutch under either a first control routine or second, different control routine based upon the operational condition of the straddle-type vehicle determined by the at least one sensor.

A straddle-type vehicle with improved protection of a discharge part on a fuel tank. A seat is at least partially arranged above a fuel tank and is fitted on a front load receiving part and a rear load receiving part which are arranged on the fuel tank apart from each other in the front and rear direction of the vehicle. A fuel pump unit has a discharge part for discharging fuel in the fuel tank and supplying the fuel in to an engine. The discharge part is arranged on the fuel tank between the front load receiving part and the rear load receiving part.

The invention relates to an urban rail operation vehicle and in particular relates to a straddle type monorail operation vehicle with a structure comprising two pairs of wheels. The straddle type monorail operation vehicle comprises a carriage, a steering frame, an engine, a transfer case and a walking pump, wherein the steering frame is connected with an underframe of the carriage through a central pin dragging device; the steering frame comprises a framework, a secondary suspension device and a dragging device; the overall framework is of an II-shaped full-steel installed and welded plate type box structure and comprises a side beam, end beams connected to two ends of the upper part of the side beam and two vertical beams which are connected between the end beams; a motor bracket is fixed between the upper part of the side beam and the corresponding vertical beam; two independently-driven walking wheel assemblies are mounted on two motor brackets; four guide wheel assemblies are mounted on two sides of the middle part of the side beam; two stabilizing wheel assemblies are mounted on two sides of the lower part; the secondary suspension device adopts a secondary steel coil spring assembly. The straddle type monorail operation vehicle can reasonably meet the circuit requirements of monorail PC beams and is high in safety coefficient, excellent in dragging performance, simple and compact in structure, easy to maintain, stable in running and excellent in brake performance.

A method and apparatus for controlling inflation and deflation of spaced inflatable packer elements of a straddle stimulation tool within a well casing of a well. A straddle stimulation tool is positioned by tubing at a desired location within the well casing. Fluid is pumped through the tubing and tool at a rate inflating the spaced inflatable packer elements within the well casing and establishing an annulus interval. The inflation control retains pressure within the inflated packer elements and permits the flow of stimulation fluid into the annulus interval for stimulation of the formation. After completion of well stimulation, the packer element pressure control is moved to a packer equalizing position by tension applied via the tubing to equalize packer pressure with casing annulus pressure, deflating the packer elements and permitting conveyance of the straddle stimulation tool within the well casing by the tubing string.

A horizontal well packer staged fracturing technology tube pillar comprises an oil string, a hydraulic anchor, a seat sealing controller, a straddle packer A, a straddle packer B, a straddle packer C, a sliding bush sand spraying device, a sand spraying device, a guider, and a capillary tube line; wherein the oil string is installed and connected with the hydraulic anchor, a seat sealing controller, the straddle packer A, the sliding bush sand spraying device, the straddle packer B, the sand spraying device, the straddle packer C and the guider; the capillary tube line is connected with the seat sealing controller, the straddle packer A, the straddle packer B, the straddle packer C at one side of the oil string. In the situation of the immovability of the tube pillar, the tube pillar is characterized by realizing the pressing parting technology of the two to three layer by bowling, high construction safe reliability, strong operability, simple working procedure, simple implementation and the like and is widely applied in the petroleum oil production technology.

The invention relates to an urban railway working vehicle bogie and particularly provides a straddle type single track working vehicle bogie, aiming at solving the problems that an existing bogie cannot meet the operation requirement that a single track road has more bends and slopes and is narrow. The straddle type single track working vehicle bogie comprises a framework, a secondary suspension device and a traction device, wherein the whole body of the framework is of an II-shaped all-steel assembly welding plate type box-shaped structure, and comprises a side beam, an end beam and longitudinal beams; motor brackets are fixed between the upper part of the side beam and the longitudinal beams respectively; the motor brackets are provided with walking wheel assemblies; four guide wheel assemblies are mounted in the middle of the side beam and two stable wheel assemblies are mounted on the two sides of the lower part of the side beam; the secondary suspension device adopts a secondary steel coil spring assembly; walking wheels are rubber steel wire tyres filled with nitrogen; guide wheels and stable wheels are additionally arranged so that a working vehicle can be safely and stably operated; the turning radius is small, the climbing capability is strong, the sticking force is high, the highest operation speed is 40km / h, the working speed is 5km / h and the rescuing speed is less than 5km / h; the straddle type single track working vehicle bogie has a simple structure, is convenient to maintain and has a reliable performance.

This invention relates to alternative, synthesisable trend-following strategy, based on a rolling, delta-spliced lookback straddle. This operates like a conventional lookback straddle, except that the time to expiry, rather than monotonically running down to zero, is reset where possible to that of a ‘younger’ straddle, provided that the delta of the two straddles does not differ by more than a specified amount. It is more computationally efficient than prior art approaches; further, it does not lead to positions being prematurely liquidated.

A fully automatic driverless straddle carrier for transporting and stacking freight containers is equipped with several different sensor systems for the vehicle detection and navigation, the signals of which being evaluated and monitored in an electronic sensor fusion system and the current coordinates of the location determined thereby then being transmitted to a system of electric controls for automatically steering, driving and positioning the vehicle on preset paths stored in an electronic path control. Laser scanners are arranged at the vehicle for automatically guiding the vehicle over a container stack. In this straddle carrier, one of the absolute sensor systems for the vehicle detection is made up of a local radio detection system, which is arranged on the vehicle as a mobile radio base station, a plurality of radio transponders being stationarily positioned in the traveling area of the working site, an automatic switching device being provided for switching the steering from the automatic steering by navigation to an automatic steering by laser scanners and vice versa, when the vehicle reaches, travels over or leaves a container stack.

A straddle packer system includes an upper seal member, a lower seal member, an upper equalizing valve configured to equalize pressure across the upper seal member, a lower equalizing valve configured to equalize pressure across the lower seal member, and an anchor. The upper and lower seal members do not move when actuating the upper and lower equalizing valves, respectively, into an unloading position to equalize the pressure across the upper and lower seal members.

A control system in a straddle-type vehicle is provided. The control system includes front and rear wheels, comprises a load distribution changing section which changes a ground load distribution between the front and rear wheels during driving of the vehicle; a slip suppressing condition determiner section which determines whether or not a suppressing condition used to suppress a slip of one of the front and rear wheels is met, during driving of the vehicle; and a load distribution control section which controls the load distribution changing section to make the ground load of the one of the front and rear wheels greater when the slip suppressing condition determiner section determines that the suppressing condition is met, than when the slip suppressing condition determiner section determines that the suppressing condition is not met.

An isolation assembly for use with coiled tubing is described. The isolation assembly has a check valve for providing selective fluid communication through from the coiled tubing, through the isolation assembly, and into a downhole tool, such a straddle packer. The isolation assembly includes a shuttle moveable within a housing, and plurality of ports to selectively provide fluid communication from within the isolation assembly below the check valve, through the ports, and into the annulus, thus allowing selective surface-controlled equalization of downhole equipment. Also described is a bottom hole assembly including the isolation assembly. An improved method of fracing a formation includes providing a check valve, thus improving the life of the coiled tubing and the safety of the operation, and reducing the time to perform a given downhole operation.

A vehicle antitheft device includes a first electric device signal detection circuit for detecting a first signal generated by the operational state of a first electric device and a second electric device signal detection circuit for detecting a second signal generated by the operational state of a second electric device. The first and second signals are combined to provide an input code. When the input code matches with a predetermined first ID authentication code, start-up of an engine of the vehicle is permitted. Accordingly, the vehicle antitheft device provides an increased number of codes for enabling or disabling an immobilizer function of the vehicle antitheft device, thereby effectively preventing theft of the vehicle.