16787results about "Wrenches" patented technology

An ultrasonic clamp coagulator assembly that is configured to permit selective cutting, coagulation and clamping of tissue during surgical procedures. An elongated portion of the instrument can be configured for endoscopic applications and has an outside diameter of less than 6 mm. The construction includes a waveguide and blade that enable larger wave amplitude and a longer active blade length and still provide sufficient frequency margin or window. The waveguide is provided with a series of gain steps located at the distal portion of the waveguide preferably at the two most distal nodes in relation to the handpiece, or the two most proximal nodes in relation to the blade tip.

A tool drive system for transferring rotational power from a rotational tool, such as a drill or ratchet, to at least one input drive shaft which then transfers the power to at least one output drive shaft. The angle of at least one input drive shaft being adjustable relative to at least one output shaft. The tool drive system comprises a round housing with an angle adjuster attached to the input shaft that assists in adjusting and locking the angle of the input shaft relative to the output shaft in an almost circular span. The input and output shafts may be positioned in a user-selected gear ratio from the input to output shafts or vice versa.

An object is to improve accuracy of tightening torque and to shorten time necessary for fastening a screw in an impact type screw fastening device that uses an electric motor as a rotation driving source. A control method for the impact type screw fastening device that uses an electric motor as a rotation driving source includes the steps of driving the motor to rotate by supplying current to the motor intermittently so that torque exerted on a load by rotation of the motor becomes like pulses on the time axis, and controlling the current of every time of each pulse so that an increment of every time of each pulse of the torque after the torque reaches a target approach torque TQN that is a first set value becomes smaller than that before it reaches the target approach torque TQN.

According to one embodiment, an impact tool includes: a motor; and a hammer that is connected to the motor and that has a striking-side surface; and an anvil that is journalled to be rotatable with respect to the hammer, that has a struck-side surface and that provides a striking power to a tip tool, wherein the motor is drivable in: a first driving mode in which the motor is continuously driven in a normal rotation; a second driving mode in which the motor is intermittently driven only in the normal rotation; and a third driving mode in which the motor is intermittently driven in the normal rotation and in a reverse rotation.

Power tool (11) may include a motor and oil pulse unit (22) that generates an elevated torque. Oil pulse unit (22) may be coupled to the motor and have output shaft (18). When load acting on output shaft (18) is less than a predetermined value, rotating torque generated by the motor is directly transmitted to output shaft (18). When the load acting on output shaft (22) exceeds the predetermined value, an elevated torque is generated by oil pulse unit (22) and applied to output shaft (18). Output shaft (18) may be connected to load shaft (12). A socket may be attached to the distal end of load shaft (12). Power tool (11) may further include detecting device (20) for detecting change in rotational angle of output shaft (18) and the direction of rotation thereof, and a control device. The detecting device (20) may output signals corresponding to a state of output shaft (18) to the control device. The control device may store the state of output shaft (18) at predetermined interval. Preferably, the control device may further determine a generating time, at which oil pulse unit (22) generates the elevated torque, based upon the state of output shaft (18).

According to an aspect of the present invention, there is provided an impact tool including: a motor drivable in an intermittent driving mode; a hammer connected to the motor; an anvil to be struck by the hammer to thereby rotate / strike a tip tool; and a control unit that controls a rotation of the motor by switching a driving pulse supplied to the motor in accordance with a load applied onto the tip tool.

An air powered wrench device with a pivotable head and associated method of using. The device comprises a handle pivotally attached to an arm. The handle comprises a housing, an air intake nozzle, an air driven motor, a drive shaft, a ball bearing collar, a universal joint, an on / off button, a trigger switch, a directional throw switch, a lock pin, a spring, and a pivot post. The arm is pivotally attached to the handle via the pivot post. The arm includes: an outer casing, an extension rod, a ball bearing sleeve, a first pawl gear, a second pawl gear, and a bit connector. The method of using the device comprises the steps of adjoining, affixing, aligning, allowing, enshrouding, getting, moving, obtaining, putting, rotating, shifting, squeezing, and tightening.

A surgical coupling device detachably connects a tool holder to a surgical instrument, wherein the tool holder is provided with a recess into which a coupling portion of the instrument can be inserted detachably, wherein a locking recess is provided in an inner wall of the recess, with which a locking member can be engaged detachably, the locking member being supported at the instrument, wherein the locking member is selectively movable into a locking position and a release position by a servo drive.

A surgical device comprising an adapter assembly is disclosed. The adapter assembly selectively interconnects a loading unit and a device housing, and includes at least one drive converter assembly for interconnecting a rotatable drive shaft and an axially translatable drive member of the loading unit. The at least one drive converter assembly converts and transmits a rotation of the rotatable drive shaft to an axial translation of the axially translatable drive member of the loading unit. The at least one drive converter assembly includes a drive element, a drive nut, and a distal drive member. The drive element defines a longitudinal axis. The drive nut is disposed about the longitudinal axis, and the distal drive member is disposed along the longitudinal axis.

A power tool includes a body housing a motor with a first output shaft and an attachment for engagement with the output shaft. The attachment includes an output shaft which transmits rotational motion derived from the rotational motion of the motor and further includes a gear mechanism enabling a gear change in rotational speed between its input and output. A combination of the body and the attachment thereby provides a plurality of serially-coupled gear mechanisms.

Light Emitting Diode Light Sources for Dental Curing are disclosed. Some embodiments of the invention include structures such as Light Emitting Diode Array(s), heat sink, heat dissipation, heat pipe, and control circuitry are disclosed.

In a torque-limiting device, a first end engages a fastener, a second end receives an applied torque, and a magnetic torque limiter transmits the applied torque from the second end to the first end to rotate the first end in conjunction with the second end when the applied torque is less than a predetermined limit.

A hinged socket wrench speed handle having an offset shank (20) with a first end (22) and a second end (24). Attached to the first end (22) is a clevis (28) which receives a 180-degree drive head that is held by a hinge pin (40). The drive head consists of either a square drive head (30) or a ratchet drive head (31). To the second end (24) is attached a handle (58), which rotates the wrench. A second embodiment of the hinged socket wrench includes a second clevis (28) that is added to the second end (24) of the offset shank. The second clevis (28) adds further combinations of angular displacement of the handle (58). Thus increasing the value of the wrench as a tool and also its utility in difficult work areas. The wrench consists of five hinge pin (40) variations which provide additional surface interface with both the hinge pin and the handle yoke, thereby improving the structural integrity and prolonging the tool's life.

A resorbable screw fastener and a method of firing with an applicator capable of applying a surgical fastener to tissue in order to form tissue connection to secure objects to tissue, the fastener including a body portion having a helical thread, a head portion disposed at the proximal end of the body portion. The resorbable screw fastener is 100% resorbed in vivo during a period of time ranging from about 14 days to about one year after implantation.

A holder for a bit is disclosed. The bit may include a first locking element. The holder may include a housing; a base assembly including a first hole; a second locking element partially disposed within the first hole and configured to move between a locking position in which the second locking element engages the first locking element to prevent removal of the bit, and an unlocking position in which the second locking element is spaced from the first locking element allowing the bit to be removed; and a follower assembly contained within the housing and configured to move relative to the housing and base assembly between a first position in which the follower assembly supports the second locking element in the locking position, and a second position in which the follower assembly allows the second locking element to move from the locking position to the unlocking position.

A system for performing a less invasive surgical procedure and, in particular, devices and methods for spinal fixation. The system comprises dilation tool(s), at least one working / insertion cannula, a plurality of screws, at least one fixation rod for connecting the screws, and a rod inserter. The dilation tool(s) may be used to dilate an incision made in a patient to form an opening. Thereafter, a drill may be used to form holes in the vertebrae. An insertion cannula may be attached to a screw and inserted into the opening. The screws may be polyaxial screws and may be inserted into the vertebrae using a screwdriver. An operator may then move the insertion cannula to manipulate a head portions of the screws such that the head portions may be aligned to receive a fixation rod. A rod inserter may be used to insert a fixation rod into the head portions. After the fixation rod is in place, it may be locked to the screws, thereby fixing the system in place on the spine.

Disclosed herein are novel electrophoretic displays and materials useful in fabricating such displays. In particular, novel encapsulated displays are disclosed. Particles encapsulated therein are dispersed within a suspending, or electrophoretic, fluid. This fluid may be a mixture of two or more fluids or may be a single fluid. The displays may further comprise particles dispersed in a suspending fluid, wherein the particles contain a liquid. In either case, the suspending fluid may have a density or refractive index substantially matched to that of the particles dispersed therein. Finally, also disclosed herein are electro-osmotic displays. These displays comprise at least one capsule containing either a cellulosic or gel-like internal phase and a liquid phase, or containing two or more immiscible fluids. Application of electric fields to any of the electrophoretic displays described herein affects an optical property of the display.