4518results about "Portable drilling machines" patented technology

A portable electric nailing gun operating from a power supply. The motor accelerates a flywheel, which at the appropriate energy state is coupled through a mechanism to an anvil acting directly on the nail. The actuation is governed by a control circuit and initiated from a trigger switch. The stored energy delivered from the motor is coupled to the output anvil drives the nail. At least one position of the output anvil is sensed and once the nail is driven, the power is disconnected from the motor. This method uses a direct acting clutch and a harmonic motion nailing mechanism to reduce wear and increase robustness of the nailer. Elastic elements are used to limit stresses during the impact periods. The electrical control circuit and sensors allow precise control and improve safety. The power supply is preferably a rechargeable low impedance battery pack.

A surgical instrument having a locking mechanism for preventing an output shaft of the surgical instrument from rotating and a further locking mechanism for mounting a battery pack to a distal end of a housing of the surgical instrument. The surgical instrument further includes a clutch mechanism for limiting the torque of a drive shaft of the surgical instrument. The locking mechanism for preventing the output shaft from rotating includes a locking switch which mates with a locking cap disposed on the output shaft. The locking mechanism for mounting the battery pack to the housing includes a groove at the distal end of the housing and a retaining ring which engages the groove when the battery pack is mounted on the housing. The clutch mechanism includes a clutch plate that interfaces with both the output shaft and the drive shaft and prevents failure of the motor shaft.

A cordless power tool has a housing which includes a mechanism to couple with a removable battery pack. The battery pack includes one or more battery cells as well as a system to dissipate heat from the battery pack.

A fastening tool that drives a fastener into a work-piece. The tool includes a motor that is connected to a transmission. The transmission includes a flywheel. The tool also includes a driver mechanism that is adapted to drive the fastener into the work-piece. The flywheel is connected to the driver mechanism when the flywheel is in a flywheel firing position. The tool includes a control module that detects a flywheel position and compares the flywheel position to the flywheel firing position. The control module also adjusts the flywheel position based on the comparison. The control module ensures that the transmission has enough rotations to ensure that enough momentum can be generated to drive the fastener into the work-piece.

An apparatus and method for forming a hole in material for non-medical and medical purposes such as a cranial burr hole for ventriculostomy and brain biopsy procedures. The apparatus includes a main unit upon which a drill unit is located. The drill unit includes a drill bit and an on/off switching means. The main unit includes a handle which is suitable for grasping, and an advancing mechanism including a release/engage mechanism, and an advancing lever and an optional on/off switch. The drill unit is advanced a predetermined distance relative to the main unit each time an advancing lever is pulled. In use, the apparatus is placed in a desired position upon the material to be drilled such a patient's skull and is stabilized by a stabilization platform, the apparatus is then turned on, and the advancing lever is pulled to advance the drill unit a predetermined distance relative to a longitudinal axis of the main unit with each pull of the advancing lever. The procedure is ended when the desired depth of penetration has been reached, or the material such as in the case of skull bone, has been completely penetrated.

A power tool comprises a body (14) having a motor (22) with an output. A detachable tool head (50) is engageable with the motor output wherein the motor output has a first engagement member (32) for complimentary engagement with a second engagement member (62) on the tool head drive. The first engagement member (32) is recessed within the body (14) and accessible through an aperture (44) therein. And the second engagement member (62) is recessed within the tool head (52) and accessible through a second aperture therewithin.

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.

A transportable power tool such as an impact driver has a power unit in which a motor and a reducer-transmitter are contained, a grip and a coupler unit with which a battery pack is coupled. Maximum dimensions of the power unit and maximum dimensions of the battery pack in a direction perpendicular to both of center axes of the power unit and the grip and in a direction parallel to the center axis of the power unit are larger than those of the grip in the same directions. Operation members used for selecting an operation mode of the motor and a display device are provided at positions near to the grip from a line binding contacting portions of the power unit and the battery pack when the power unit and the battery pack are simultaneously contacted with the same plane in each state.

An ergonomically efficient cordless power tool system having desired power-to-weight ratios may be configured by reducing weight in one or more constituent weight groups of a given cordless power tool system, while maintaining or improving the total power output of the tool system. An example cordless power tool system may be configured to output a maximum power of at least 475 watts, and have a maximum power output to weight ratio of at least 70 watts per pound (W/lb).

A surgical handpiece with a rotating spindle for receiving the coupling head of a surgical attachment or a cutting accessory. A gear train has plural drive heads that simultaneously rotate at different speeds. A clutch assembly has pins that move along the length of the spindle. The clutch assembly sets the position of the pins so they will engage one of the drive heads. The spindle rotates with the drive head with which the clutch pins are engaged.