35456 results about "Rotational axis" patented technology

A robotic surgical system includes a sterile surgical instrument, a robotic surgical manipulator, and a sterile drape covering at least a portion of the robotic surgical manipulator. The surgical instrument has a proximal interface and a distal end effector. The proximal interface includes a gimbal assembly with two intersecting rotational axes coupled to the distal end effector. The robotic surgical manipulator has a drive plate that bears against the gimbal assembly. The drive plate has two degrees of rotational freedom about a center of motion that is coincident with an intersection of the axes of the gimbal assembly. The sterile drape includes a sterile sheet covers at least a portion of the robotic surgical manipulator, a frame bonded to the sterile sheet, an instrument interface that covers the drive plate of the robotic surgical manipulator, and a diaphragm that connects the instrument interface to the frame.

Mechanisms, assemblies, systems, tools, and methods incorporating the use of an offset drive shaft within an independently rotating member are provided. An example mechanism includes a base and a main shaft mounted to rotate relative to the base, a first drive shaft mounted inside the main shaft, and a first drive feature engaged with the first drive shaft. The main shaft includes a proximal end, a distal end, and a main shaft rotational axis defined therebetween. The first drive shaft is offset from the main shaft rotational axis. A first drive feature rotational axis is defined for the first drive feature and is fixed relative to the base as the main shaft rotates. The first drive feature rotates the first drive shaft.

Power tools of the type under consideration include hammer drills, for example, which are electric or battery powered and includes two modes of operation: a rotation mode and a rotation-hammer mode. A manually operable selector lever enables the hammer drill to be selectively operated in one of the two modes by disengaging and engaging a hammer mechanism. In rotation-hammer mode, the drive shaft of the hammer drill rotates a tool element about a rotational axis and oscillates the tool element along a rotational axis. An attachment mountable within the chuck of a hammer drill prevents a tool element from rotating when the hammer drill is operating in rotation-hammer mode. The hammer drill attachment transfers hammer action, but not rotation, to the tool element. The hammer drill attachment enables dual function power tools to be operated in a hammer only mode to perform a function, for example, chiseling.

A dental prophy angle includes a housing and a rotor. The housing defines a first bore and a second bore in communication with the first bore, and rotor is disposed within the second bore. The rotor includes a gearing system, and rotor includes a lock having a lock channel configured to receive a tip of a drive shaft. The housing includes a lock receiver for receiving the lock receiver permits rotation of the lock within the lock receiver and restrains linear movement of the lock in a direction substantially parallel to a rotational axis of the rotor.

A laser scanning system for generating a laser scanning pattern in a scanning field, while amplifying the scan-angle multiplication factor of rotating mirrors employed therein. The laser scanning system employs rotatable laser scanning assembly having an axis of rotation and first and second rotating mirrors with normal vectors that are coplanar with each other and said rotational axis, and which form an acute angle substantially less than 90 degrees so as to provide a laser scanning assembly with a scan angle multiplication factor that is greater than 2.0. A cluster of stationary mirrors mounted about the first and second rotating mirrors, for sweeping a laser beam off the cluster of stationary mirrors after a laser beam has been reflected off the first rotating mirror, then reflected off the second rotating mirror, and then directed outwardly towards an array of pattern mirrors, so as to generate a resultant laser scanning pattern within the scanning field.

An electric drill apparatus having a low profile is provided which comprises an annular cutter, a motor for rotating the annular cutter, a rotary shaft assembly for rotating the annular cutter attached to its leading end about a rotating, a rotation reduction mechanism disposed between the motor and rotary shaft assembly for transmitting a driving force of the motor to the annular cutter through the rotary shaft assembly, a feed mechanism responsive to an operation of a manual handle, for moving the rotary shaft assembly along with a straight line to advance or retract the annular cutter attached to the rotary shaft assembly with respect to a workpiece, and an adhesion base for securing the electric drill apparatus to the workpiece. The annular cutter has a plurality of cutting blades comprised of cemented carbide tips fixed on its lower end, thereby it is capable of rotating at a high speed. The rotary shaft assembly has a rotating shaft which rotates in a direction different from that of a rotating shaft of the motor, thereby the drill apparatus has a low profile.

A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.

A rotating irradiation apparatus includes a rotating gantry 3 including a front ring 19 and a rear ring 20 and is provided with a beam delivery device 11 and an irradiation device 4. The beam delivery device 11 delivers an ion beam used for particle radiotherapy. Radial support devices 61A and 61B support the front ring 19 and radial support devices 61A and 61B support the rear ring 20. Each radial support device includes a linear guide 41, an upper support structure disposed above the linear guide 41, and a lower support structure disposed below the linear guide 41. The upper support structure is movably mounted on the lower support structure and is movable in the direction of the rotational axis of the rotating gantry 3.

One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.

The invention discloses a large-sized workpiece welded intelligent robot device, relates to robot technology, in particular to the robot device based on visual control technology. The device consists of a robot body, a sensing system, a robot controller and a welding auxiliary mechanism. The welded robot is provided with nine moving shafts, including three macrographic moving translational moving shafts, three microscopic moving translational moving shafts and three rotating shafts. The robot body comprises a robot frame and a robot head which is arranged on a transverse arm of the robot frame, and the robot frame consists of the three macrographic moving translational moving shafts, namely a horizontal lead rail, an upright post and the transverse arm. The robot head consists of the three microscopic moving translational moving shafts, the three rotating shafts and a welding gun. The robot frame provides the large-scale three-dimensional movement of the robot; the precision of macrographic moving movement is compensated by the microscopic moving mechanisms of the robot head which also provides rotating freedom of motion. The robot device can meet the movement requirements of large scale and precise positioning for the welding operation of large-sized workpieces. Through the visual sensing technology and intelligent visual controlling technology, the device can improve the automatic welding quality and efficiency of the welded robot.

A disk apparatus includes (a) an actuator having a head supporting arm with a tab formed on the arm and a voice coil fixed to the arm, which arm is rotatable on a horizontal rotary shaft as well as on a vertical rotary shaft, (b) a voice coil motor having an upper yoke with a magnet fixed to the upper yoke and a lower yoke sandwiching and confronting the voice coil, and (c) a ramp section guiding and holding the tab at a refuge place. When the actuator at the refuge place starts loading with a starter command, a pulsed driving current is applied to the voice coil temporarily for urging the tab against a tab-holding plane of the ramp section, thereby making use of repulsion force generated on the actuator, so that the tab can leave the refuge place efficiently for carrying out the loading operation.

An image tracking system for generating digitized image frames of a moving object using an image capture device and a position control device. The image capture device and determining a location value for an object image within each of the digitized image frames. The position control device is coupled to the image capture device to receive the location value of the object image and generates a plurality of control signals which are sent to the position manipulating device. The position control device also uses the plurality of control signals and generates a plurality of rotational movements which position the image capture device, such that the location value of the object image remains within a center region of each of the digitized image frames and such that rotation along different rotation axis occurs independently.

Mechanisms for a control knob or other interface device providing additional degrees of freedom for the knob. One embodiment provides a rotatable knob moveable also in a lateral plane approximately perpendicular to the axis of rotation. A mechanism providing the lateral motion can include a gate member and a plunger member that engages grooves in the gate member. A rotational sensor detects a rotational position and a lateral sensor can detect a lateral position of the knob. Another embodiment provides an actuator that includes a shaft that is coaxial with the axis of rotation and which can be moved linearly along the axis of rotation with respect to actuator housing to accommodate linear motion of the knob. In another embodiment, a gear assembly including two interlocked gears is provided to transmit rotational motion from the knob to the sensor, and the interlocked gears translate with respect to each other when the knob is translated along the rotational axis.