Drill

About: Drill is a research topic. Over the lifetime, 48979 publications have been published within this topic receiving 297475 citations.

Powered kerrison-like rongeur system

Abstract: A motorized drill is mounted in the handle (18) of a Kerrison Rongeur System utilized by a surgeon to perform surgical procedures on a patient, includes mechanism for moving the bit (25) supported in a rotating drill (12) toward the fixed upstanding foot (24) mounted at the remote end of the pistol-shaped handle (42) for removing bone which is located between the upstanding foot (24) and the drill bit (25). In another embodiment, the drill (133) is removably fixed in the handle (126) and the foot (120) moves relative to the drill bit (129). In either embodiment a trigger (22 or 124) operated by the surgeon actuates the foot (24 or 120)/drill (12 or 133) and the trigger (22 or 124) is biased to maximize the space between the foot (24 or 120) and the drill bit (25 or 129). The foot shape and dimension can be modified for perfecting given surgical procedures. In one embodiment the drill motor releasing mechanism includes a pinion gear and rack (72 and 84) performing the additional function of releasing the motor (12) locked in position in the handle (18).

Rotary drill bits

Abstract: A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.

Battery powered orthopedic cutting tool

Abstract: The invention provides a surgical electric power drill with self-contained batteries suspended from the butt end of a pistol grip handle in such an arrangement as to counterbalance the drill against top heaviness and toppling moments by locating the center of mass of the drill assembly within the pistol grip handle.

Electric hand tool, in particular drill

Abstract: In an electric hand tool, particularly a drill, with a housing, an electric motor which is received in the housing and has a motor shaft parallel to the housing axis, and with a work spindle which is driven by the electric motor via a transmission gearing, the housing is divided along a dividing plane for the purpose of switching from straight drilling to angular drilling and it is provided that the front housing part containing a bearing for the work spindle and the rear housing part containing the electric motor can swivel relative to one another in such a way that the work spindle projecting out of the front housing part can occupy any angle between 0° and 90° or more relative to the motor shaft. A catch lock which can be unlocked and/or locked manually stops the two housing parts in the selected swivel position. A torsionally rigid transmission of force from the motor shaft to the work spindle is realized in every swivel position of the housing parts in the transmission gearing.

Multi-mode power tool utilizing attachment

Abstract: A power tool includes multiple attachments to selectively perform rotary motions, reciprocating motions, and multiple impact motions upon a work surface. For example, tool attachments may be selected to configure the power tool as a nailer, stapler, biscuit jointer, drill, hammer drill, detail sander, sheet metal nibbler, router, buffer, jig saw, chipping tool, saws all, as well as other types of power tools. A base unit provides a rotary input that is adapted to each engaged tool attachment. In particular, a power tool control system in the base unit senses an attachment type designation from the tool attachment, as well as user inputs and motor feedback, to change motor control. Examples of these adaptions include changing motor speed, changing trigger operation from on/off to variable speed, responding to or ignoring a forward/reverse control, as well as monitoring motor feedback and sensors in the tool attachment for conditions warranting motor deactivation.