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| Number | Title | Issue Date |
| 8092125 | Safety device for a peck drill A pneumatic feed drill has a control unit that repeatedly advances and retracts the drill bit in peck cycles while drilling the hole. The drill has a hydraulic damper cylinder with a damper rod protruding from it that limits the speed of advancement of the drill bit... | 01/10/2012 |
| 8007210 | System and method for breaking chips formed by a drilling operation A drilling machine is provided for breaking chips formed by drilling action into manageable lengths. The drilling machine comprises a first gear having a first axis of rotation, and a cam follower surface. It has a second gear having a second axis of rotation coinci... | 08/30/2011 |
| 7308949 | Concrete drill A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) cont... | 12/18/2007 |
| 7303363 | Pneumatic drill A drill has a tubular outer housing and a tubular inner housing. The inner housing is movable between extended and retracted positions. A pneumatic motor with a chuck mounts to the inner housing. Air pressure is delivered to annular pistons to cause the inner housin... | 12/04/2007 |
| 7270194 | Drilling machine with pneumatic control A pneumatic drilling machine is provided, comprising a pneumatic motor, a circuit for connecting the motor to a source of compressed air, a tool holder spindle, and a drive mechanism. The drive mechanism comprises a coupling shaft which can be moved to select a firs... | 09/18/2007 |
| 7264426 | Apparatus and methods for servo-controlled manufacturing operations Apparatus and methods for servo-controlled manufacturing operations are disclosed. In one embodiment, an apparatus includes a base member, a drive platform spaced apart from the base member by a separation distance, and a plurality of guide members extending between... | 09/04/2007 |
| 7252464 | Hydraulic stop A hydraulic stop for use in drilling or countersinking operations comprises a rotatable body for rotating a tool about its axis. A cage adapted to contact the surface of a workpiece when the tool has penetrated into the workpiece by a predetermined distance actuates... | 08/07/2007 |
| 7207754 | Tool for machining workpieces A tool for the machining of workpieces is provided with a coolant/lubricant supply and an actuation unit for the activation of supplementary functions of the tool, with an actuation element and an actuation medium circuit. The actuation unit is separated from the co... | 04/24/2007 |
| 7204321 | Concrete drill A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) cont... | 04/17/2007 |
| 7172034 | Boring control method A boring control method for a machine tool for automatically boring a deep hole using a central control means performing boring with programmed control. In the boring, the number of processing and steps of the machine tool is kept minimum, load torque of a tool is d... | 02/06/2007 |
| 7073989 | Re-configurable bushing and drill incorporating same A bushing and associated drill are provided that may be actuated either pneumatically or with a spring in order to be biased into contact with a structure, such as a multi-layer structure, to reduce gaps therewithin. The bushing includes a housing and a nose piece s... | 07/11/2006 |
| 7048077 | Drilling machine with pneumatic control A pneumatic drilling machine is provided, comprising a pneumatic motor, a circuit for connecting the motor to a source of compressed air, a tool holder spindle, and a drive mechanism. The drive mechanism comprises a coupling shaft which can be moved to select a firs... | 05/23/2006 |
| 7008149 | Tool kit and method of using A new and improved tool kit and method of using the tool kit for use in making a substantially perpendicular indented surface around an existing threaded bolt hole in a workpiece is disclosed. The kit comprises a guide rod and a grinder drill bit. The guide rod has ... | 03/07/2006 |
| 6910836 | Impact driver for rotary tools Method and apparatus for improving the efficiency of the rotating cutter of a tool by converting at least part of the rotational torque applied to the cutter to repeated rotational impact forces. ... | 06/28/2005 |
| 6857828 | Incremental step drilling system and method A method for drilling a hole in a work piece, such as printed circuit boards, comprises drilling to a point in a work piece and retracting said drill bit a retract distance. The retract distance is configured such that a tip end of said drill bit remains below a top... | 02/22/2005 |
| 6758642 | Orbital hand tool apparatus for drilling A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The apparatus includes a housing, a spindle unit in the housing for rot... | 07/06/2004 |
| 6637986 | Drilling apparatus and method The invention provides a drilling apparatus and method for drilling a hole in a workpiece. The drilling apparatus includes means for rotating a drill bit and means for advancing the rotating drill bit into a workpiece to a first depth. The drilling appara... | 10/28/2003 |
| 6371701 | Apparatus having a controllable dwell and associated method An apparatus having a controllable dwell for drilling and or countersinking a hole in a workpiece is provided which generally comprises a feed mechanism, a retraction mechanism, and a dwell mechanism. The feed mechanism is configured to feed a spindle fro... | 04/16/2002 |
| 6343900 | Two-speed pneumatic machine tool This pneumatic machine tool includes a driving shaft (14) driven in rotation by pneumatic drive means (12), a driven tool-carrier shaft (16), a gear mechanism (18) disposed between the driving shaft and the driven shaft to drive the latter, a set of senso... | 02/05/2002 |
| 6234728 | Drilling head with vibratory effect A mounting attachment for a penetrating tool such as a drilling head on a machine with a machining shaft includes a support provided with means for coupling to a machine; a tool holder provided with means for fixing a tool; means for axially guiding the t... | 05/22/2001 |
| 6092965 | Boring tool A boring tool, including a housing part (3), a fisture (35) for transmitting a rotational movement to a borer, the transmitting fixture (35) being supported in the housing part and having a central receiving region (36) for receiving the borer (4), two, s... | 07/25/2000 |
| 5927910 | Automated drilling apparatus Automated drilling apparatus. This invention relates generally to an automated drilling apparatus, with its control system and other operating components uniquely integrated within an external housing, while operating via low pressure air sources or other... | 07/27/1999 |
| 5913955 | Vibration damping method and apparatus The present invention provides vibration damping method and apparatus that can damp vibration in more than one direction without requiring disassembly, that can accommodate varying tool dimensions without requiring re-tuning, and that does not interfere w... | 06/22/1999 |
| 5911802 | Cutting method by vibratory cutting tool A cutting method using a vibratory cutting tool enables efficient creation of chips by breaking or separating of chips, and can retard both a deterioration of machined surface roughness of a workpiece and an increase in cutting resistance. The vibration o... | 06/15/1999 |
| 5857814 | Apparatus for controlling tapping-drilling machine An apparatus for controlling a tapping-drilling machine is disclosed in which holes can be formed by means of drilling tools, and threads can be formed by means of tapping tools. A worm is elongately formed on a spindle, and a worm wheel which is meshed w... | 01/12/1999 |
| 5820312 | Device for transmitting impulse-like blows to a continuously rotatable tool bit A device for transmitting impulse-like blows to a continuously rotatable tool bit (6) is formed as an axially extending adapter (1) having a first chuck for the tool bit (6) and being insertable at a trailing end into a second tool bit chuck in a manually... | 10/13/1998 |
| 5819202 | Apparatus for detecting an abnormality of a control system In an apparatus for detecting an abnormality of a control system, the internal property calculating section thereof calculates an internal property of the control system only on the basis of a command value representing a position or a speed of the contro... | 10/06/1998 |
| 5782585 | Precision drill for drilling noncircular bores A precision drill for drilling noncircular bores, comprising a drill bit on a shaft and a holder for the workpiece being drilled, for providing a drill that can operate economically at high speeds. The workpiece holder oscillates translationally in at lea... | 07/21/1998 |
| 5769575 | Oscillatory motion device for drill press A drill press has a drive motor with output shaft that drives a chuck through a rotatable and vertically displaceable quill and a first drive coupling which includes a pair of pulleys, such as cone pulleys, and a belt extended between the cone pulleys. A ... | 06/23/1998 |
| 5752789 | Right angle peck drill The invention provides a unique approach to solving a peck feeding problem in limited access areas restricting the drilling unit size. It uses a power transmission system which is comprised of a pinion gear driven by a motor source. The pinion gear drives... | 05/19/1998 |
| 5735646 | Interruptible feed rate drilling system In a system which interrupts the infeed signal generated by a CNC machine drive signals are applied to at least an RPM Control Electronics Module to drive the rotation of a cutting tool and the infeed drive motor electronics. A solid state relay intercept... | 04/07/1998 |
| 5733074 | Manual tool for removing material from brittle and/or non-ductile stock A manual tool for removing material from brittle and/or non-ductile stock includes a housing (1) with a drive unit (2) for a tool bit (3) located within the housing (1). The tool bit is arranged to be rotated by the drive unit (3) about the bit axis. In a... | 03/31/1998 |
| 5564869 | Method of drilling ductile materials A method of drilling ductile materials with split-point drills includes the steps of placing a split-point drill above a ductile material having an entrance side, drilling a hole in the ductile material with the split-point drill from the entrance side to... | 10/15/1996 |
| 5533842 | Portable peck feed drilling system A peck feed drill incorporates a motor gear quill and a feed control assembly together on a moving race track shaped piston. External construction of the housing permits mounting of an indexing adaptor plug for attachment of drill bushings. Internal const... | 07/09/1996 |
| 5409327 | Lock wire nut drilling An apparatus for drilling lock wire holes in lock wire nuts includes a variable speed drill press mounted on a work bench and having a vertically movable drill quill supporting a rotating drill spindle on one end of which is mounted a drill chuck for hold... | 04/25/1995 |
| 5374143 | Air feed peck drive configuration An airfeed peck drill includes a substantially cylindrical drill quill contained within a cylinder in a housing. On the rear end of the drill quill is located an offset piston, the offset piston provides force for the entry and exit of the drill quill int... | 12/20/1994 |
| 5348427 | Airfeed peck drill configuration An airfeed peck drill includes a substantially cylindrical drill quill contained within a cylinder in a housing. On the rear end of the drill quill is located an offset piston, the offset piston provides force for the entry and exit of the drill quill int... | 09/20/1994 |
| 5342152 | Method and apparatus for forming intermittent chips while machining holes with a rotating tool The formation of intermittent chips or chip breakage is assured while machining holes using a rotating tool means by causing the undeformed chip thickness to vary periodically and be reduced to zero in each period of its variation. To obtain the periodic ... | 08/30/1994 |
| 5340243 | Airfeed peck drill configuration An airfeed peck drill includes a substantially cylindrical drill quill contained within a cylinder in a housing. On the rear end of the drill quill is located an offset piston, the offset piston provides force for the entry and exit of the drill quill int... | 08/23/1994 |
| 5328303 | Automatic spindle moving device for tapping/drilling machine An improved automatic spindle moving device for a tapping/drilling machine is disclosed. A worm is formed on a spindle in an elongate form in the lengthwise direction thereof, and a pair of worm wheels are meshed with the worm, while the worm wheels are s... | 07/12/1994 |
