349 results about "Straight path" patented technology

A medical probe comprises a probe shaft having proximal and distal shaft portions, and an operative element, such as a tissue removal element, associated with the distal shaft portion. The proximal and distal shaft portions can be positioned relative to each other in an axially aligned relationship and an axially non-aligned relationship at the interface between the shaft portions. For example, the ends of the shaft portions that engage each other can be beveled, in which case, relative rotation of the shaft portions will cause the angle between the portions to vary. Or, the shaft portions can hinge relative to each other to vary the angle between them. Thus, it can be appreciated that the probe can be introduced along a straight path via a small opening within the patient, and then the probe shaft portions can be moved relative to each other to reach off-axis tissue. The probe may have a drive shaft that extends within the probe shaft and on which the operative element is mounted. The drive shaft may have proximal and distal rigid shaft portions and a linkage between the drive shaft portions, so that the drive shaft can bend when the probe shaft portions are placed in their axially non-aligned relationship.

A system for determining an angular position of a steerable wheel of a vehicle can include a plurality of sensors and a controller in electrical communication with each of these sensors. The controller can be configured to compare a first data set and a second data set to respective straight path conditions, wherein the first data set includes data from a first set of the sensors and the second data includes data from a second set of the sensors. The controller can be configured to determine a substantially straight path of travel condition when the comparison of at least one of the first data set and the second data set satisfies the respective straight path conditions, and can then associate that data acquired from the steering angle sensor(s) with a neutral position.

The inventive ablation element comprises an elongated cannula having a proximal end and a distal end. The cannula defines an internal lumen within the cannula and a cannula axis. A plurality of conductors contained within the lumen, each of the conductors has a proximal end proximate the proximal end of the cannula, and a distal end proximate the distal end of the cannula. A plurality of ablation stylets each has a proximal end and a distal end, and each coupled at the respective proximal end of the stylet to the distal end of a respective conductor, the stylets comprise a deflectable material, the conductors together with their respective stylets being mounted for axial movement. A trocar point defined proximate the distal end of the cannula. A deflection surface positioned between the trocar point and the proximal end of the cannula, the deflection surface being configured and positioned to deflect, in response to axial movement of the stylets in a direction from the proximate end of the cannula to the distal end of the cannula, at least some of the stylets laterally with respect to the cannula axis in different directions along substantially straight paths, the paths defining an ablation volume.

An arrangement for delivering gasses from can combustors of a can annular gas turbine combustion engine to a turbine first stage section including a first row of turbine blades, the arrangement including a flow-directing structure for each combustor, wherein each flow-directing structure includes a straight path and an annular chamber end, wherein the annular chamber ends together define an annular chamber for delivering the gas flow to the turbine first stage section, wherein gasses flow from respective combustors, through respective straight paths, and into the annular chamber as respective straight gas flows, and wherein the annular chamber is configured to unite the respective straight gas flows along respective shear planes to form a singular annular gas flow, and wherein the annular chamber is configured to impart circumferential motion to the singular annular gas flow before the singular annular gas flow exits the annular chamber to the first row of blades.

A dual-ended applicator is provided. The applicator includes a handle, a first roller having a broad concave surface at one end of the handle, and a second, ball-like roller having a convex surface, at the opposite end of the handle. The first roller, having a greater axial length and surface area than does the second roller is intended for applying a cosmetic to broader convex areas of the skin. The second roller, having a lesser axial dimension and surface area as compared with the first roller is intended for distributing a cosmetic to the narrower, concave areas of the skin. The first roller is mounted on the applicator so as to rotate about a fixed axis lateral to the longitudinal axis of the applicator, and will move in straight paths along the skin, in line with the longitudinal axis of the applicator. The second, ball-like roller is mounted on the applicator so as to travel along both straight and curved paths, automatically adjusting between positions as the applicator is moved along the skin surface.

A control method of a robot cleaner for traveling to clean includes checking information about a predetermined traveling pattern; determining a traveling trajectory based on a traveling speed; generating a traveling pattern based on the determined traveling trajectory and the information about the predetermined traveling pattern, wherein the traveling pattern includes a first straight path, a first rotation path connected to the first straight path and for rotation in a first direction, a second straight path connected to the first rotation path, and a second rotation path connected to the second straight path and for rotation in a second direction; and repeatedly traveling along the generated traveling pattern at regular intervals. Therefore, since the robot cleaner performs cleaning without scattering dust, the efficiency of cleaning may be improved.

The invention is applicable to the technical field of pilotless driving and provides a path tracking method for a pilotless automobile. According to the method, the pilotless automobile is subjected to differential positioning by virtue of a high-precision satellite. The path tracking method comprises a straight path tracking method or a turning path tracking method. The straight path tracking method comprises the step of driving based on a distance deviation between a current position of the pilotless automobile and an expected straight path and a deviation between a course angle and an expected course angle of the pilotless automobile. The turning path tracking method comprises the step of carrying out turning driving based on a deviation distance from a current position of the pilotless automobile to a turning point and a deviation between a driving direction and a turning direction of the pilotless automobile. The path tracking method provided by the embodiment of the invention has the beneficial effects that a principle and a calculation process are simple, the calculated amount is small, and the method is easily realized in an embedded system; and besides, the combination of the high-precision satellite and a path tracking algorithm is realized in the embedded system, so that the path tracking accuracy is increased.

An offline programming device in which a path for preventing interference may be automatically inserted such that a welding robot does not interfere with a jig clamping a workpiece to be welded. The models of the robot, the workpiece and the clamp jig are indicated on a display for determining the path for preventing interference. A simulation is carried out to judge that interference with the jig may occur. When it is judged that interference will occur, data of the preventing path suitable for a straight path passing through the jig are read out from a library including registered preventing paths corresponding to shapes of various jigs. The data of the preventing path includes the three-dimensional data of each point of the path as the incremental value in relation to a reference point of the path. Also, the orientation of a welding torch is registered. The corrected welding program may be downloaded to the actual robot so as to correct the uploaded offline program by using a test result in the actual robot.

The invention provides a launch and withdraw device of an unmanned aerial vehicle and a method for the launch and withdraw device, and the device comprises a base, wherein the base is connected with a support platform through a support frame; an angle adjustment mechanism is further arranged between the base and the support platform; the support platform is slidingly provided with a withdraw platform and a catapult platform; the catapult platform comprises a second connecting plate; a groove is formed in the second connecting plate; a clamping plate is slidingly connected onto the second connecting plate; a hole is formed in the second connecting plate; an elastic rope passes through the hole to be fixedly connected onto the support platform; the withdraw platform comprises a lower jaw and an upper jaw; the upper jaw is arranged at the upper part of the lower jaw; the upper jaw is provided with a flexible buffer strip; the end, close to the catapult platform, of the lower part of the lower jaw is provided with a hook; the lower jaw is internally provided with a recovery rack; the recovery rack is provided with an unmanned aerial vehicle attitude adjustment mechanism and an unmanned aerial vehicle pushing mechanism; a wedge-shaped block is arranged on the end, close to the catapult platform, of the support platform; a cam corresponding to the hook is arranged on the end, far away from the catapult platform, of the support platform. By adopting the launch and withdraw device of the unmanned aerial vehicle, straight path launch can be realized, the catapult launch efficiency is high, a withdraw process is accurate and stable, and the launch and the withdraw can be realized at the same time.

The invention discloses a network for realizing page push and control, a page push method and a page control method. A page push server connected in a bypass is arranged in the network; and the page push method and the page control method are realized by bypass equipment in the network. In the invention, the complicated operation of page push is extracted as specialized equipment by the network and the method, thereby realizing a page push function and a behaviour control and protection function in the bypass, reducing the implementation complexity of the network straight-path equipment, improving the performance of the whole transmission network and reducing the deploy risk and cost of page push business.

The invention discloses a path sweeping method, a path sweeping device and a path sweeping system of a sweeping robot, and relates to the technical field of robots. The method comprises the following steps: acquiring a yaw angle of the sweeping robot in real time, and controlling a sweeping path of the sweeping robot according to the yaw angle so as to enable the sweeping robot to sweep the path according to an arch-shaped path. The path sweeping method controls the sweeping path of the sweeping robot according to the yaw angle so as to enable the sweeping robot to sweep the path according to the arch-shaped path, so that the problems that the sweeping robot cannot walk along a straight path when performing arch-shaped sweeping with speed measurement coded discs on left and right walking wheels and the arch-shaped path fails when the sweeping robot meets with an obstacle are solved.