Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7798751 | 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... | 09/21/2010 |
| 7347651 | Drilling device In order to improve a device (100) for a drilling machine (10) known per se for manual drilling with a casing (11), a grip (12), a tool chuck (13) and a tool (14), especially a drilling, reaming or counterboring tool, in suc... | 03/25/2008 |
| 7344341 | Drill A portable power drill having an automatic drilling cycle for feeding a rotating tool bit to a workpiece to effect the desired operation. The drill uses a rotary gerotor pump to pump hydraulic fluid used in its system, and pressurized air to operate the hydraulic pu... | 03/18/2008 |
| 7326008 | Servo tapping unit with built in shock protection A servo motor in die tapping unit provides built in shock protection for the motor by fixing a shock plate to the servo motor and floatingly mounting the shock plate to a base structure attachable to a stripper plate in a press. Sets of opposing springs allow moveme... | 02/05/2008 |
| 7305747 | Tap process for hard workpieces A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence t... | 12/11/2007 |
| 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 |
| 7267512 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/11/2007 |
| 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 |
| 7244083 | Cutting head assembly A cutting head assembly for use in cutting plate glass has a simplified drive train, all positioned about the vertical rotational centerline. The drive train includes a hollow bore drive motor having a drive adaptor directly engaged with a spline shaft that extends ... | 07/17/2007 |
| 7234675 | Vertical guide unit and stage system with the same unit A vertical guide unit is built in modular construction in which a wedge guideway member has raceway grooves cut directly in guideway member while a slider fits over the guideway member for relative movement in a sliding manner. The guideway member has an upper surfa... | 06/26/2007 |
| 7226253 | Clamping mechanism The drilling of a hole through at least two structural components in alignment with a predrilled hole or marked location in one of the structural components is facilitated by a clamping mechanism that has a bail with two legs. One leg carries a first clamping sectio... | 06/05/2007 |
| 7217230 | Apparatus for detecting position of drawbar in automatic tool change device Disclosed is an apparatus for detecting a position of a drawbar unit installed in a spindle unit. The apparatus is a part of an automatic tool exchange device for exchanging tools in the spindle unit of a machine tool. The apparatus transmits a signal to a main cont... | 05/15/2007 |
| 7140813 | Line boring machine An up modifier is provided which includes a bed, a modifier, a clamp, a modifier linkage system, a clamp linkage system, and a lever. The modifier is disposed below the bed and is vertically traversable thereunder. The clamp is disposed above the bed and is vertical... | 11/28/2006 |
| 7108459 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/19/2006 |
| 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 |
| 6964546 | Method and apparatus for drilling countersunk holes A drilling apparatus includes a drill, a surge control device and a countersink limiter coupled to the drill, and a rotatable cutting tool coupled to the countersink limiter. The cutting tool includes a drilling portion operable to form a hole, a countersink portion... | 11/15/2005 |
| 6932162 | Pneumatic processing machine having automatic stop at the end of a machining cycle A pneumatic processing machine includes a pneumatic motor, a circuit for connecting the motor to a source of compressed air, a tool holder spindle, and a drive mechanism. The mechanism includes a selection element which can be moved to select a first method of drivi... | 08/23/2005 |
| 6776562 | Power feed aline-a-drill attachment A power feed attachment that has a coupling structure to couple it to a hand held drill. A double-acting cylinder, which has a piston and a rod, and is fixedly coupled to the coupling structure. A two-position valve assembly is configured for directing a pressurized... | 08/17/2004 |
| 6761513 | Advanced aerospace drill motor A method of drilling and a drill motor are provided for use with a stationary template attached to a material to be drilled. The drill motor has a frame having a handgrip and surrounding a movable carriage or motor assembly. The motor assembly contains an air-powere... | 07/13/2004 |
| 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 |
| 6722447 | Concentric pneumatic/hydraulic power feed apparatus A power feed apparatus for applying a thrust force to an output shaft of a motor driven tool to drive the output shaft linearly towards and away from a workpiece without applying off-axis forces to the output shaft that would cause it to move out of perfect perpendi... | 04/20/2004 |
| 6719505 | 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... | 04/13/2004 |
| 6604269 | Machine tool The invention pertains to a machine tool for processing workpieces with tools, wherein the machine tool has a spindle housing that contains a spindle shaft and accommodates at least one tool as well as a drive device that causes a rotational movement of t... | 08/12/2003 |
| 6575673 | Advanced aerospace drill motor A method of drilling and a drill motor are provided for use with a stationary template attached to a material to be drilled. The drill motor has a frame having a handgrip and surrounding a movable carriage or motor assembly. The motor assembly contains an... | 06/10/2003 |
| 6382890 | Hand tool apparatus for orbital 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 tool axis passes through a predetermined point on a surf... | 05/07/2002 |
| 6368031 | Axial feed apparatus having an adjustable feed stop and associated method An axial feed apparatus having an adjustable feed stop is provided. The axial feed apparatus generally comprises a power feed module having an adjustable stop mechanism engaged therewith, wherein the adjustable stop mechanism may comprise a spindle thread... | 04/09/2002 |
| 6227773 | Compact autofeed drill and associated drilling method and apparatus A compact autofeed drill is provided and generally comprises an elongate housing having opposed ends, a motor disposed within the housing, an elongate drill bit, a drill bushing, an actuation device, and a resilient member. The motor is disposed within th... | 05/08/2001 |
| 6193447 | Positive feed tool having a retract valve A positive feed tool having a retract valve. The retract valve is manually actuatable so as to cause an advancing spindle of the tool to retract away from a workpiece. The retract valve is configured to automatically return its unactuated position after t... | 02/27/2001 |
| 6176650 | Apparatus and method for cutting a bore including automatic system for retracting the cutting tool An apparatus for cutting a bore in a device includes a boring assembly having a cutting device coupled to a housing. A control system selectively floats the housing above a mounting surface, thereby allowing the housing and associated cutting device to be... | 01/23/2001 |
| 6099213 | Automatic boring device An automatic boring device is provided that comprises a tool housing having attached to it two opposing handles with switches mounted thereon for selective engagement of pneumatic controls that activate a clamping device, rotation of a chuck of a pneumati... | 08/08/2000 |
| 6036409 | Blind hole self-collet countersink This invention is a portable pneumatic cutter tool for cutting countersinks into a workpiece 17 having pre-drilled holes 15. When pressure is applied, a piston return cylinder 57 and a feed rate cylinder 79 are also pressurized, which sets a body piston 7... | 03/14/2000 |
| 6032344 | Multiplexing of pneumatic tooling A system for operation of pneumatic tooling has a plurality of pneumatically operable tools (2). A servo-controller (21) is switchable to actuate any of the plurality of tools, to move that tool to a desired position. A position transducer (4) includes an... | 03/07/2000 |
| 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 |
| 5924828 | Drill for a railroad rail having a four position and six way hydraulic control valve A hydraulically powered tool having a motor, a pump, and a hydraulic directional flow control valve. The valve has a frame and a rotatable spool with flow channels. The valve is provided as a four position, six way valve to provide four operational condit... | 07/20/1999 |
| 5890848 | Method and apparatus for simultaneously lubricating a cutting point of a tool and controlling the application rate of the tool to a work piece An apparatus and method are disclosed for controlling the rate of application of a machine tool to a work piece by compressing a lubricating agent, and then distributing the compressed lubricating agent to lubricate and cool a cutting point of the machine... | 04/06/1999 |
| 5845721 | Drilling device and method of drilling wells A device for drilling a well bore is disclosed. The invention includes having a tubular string with a motor means for generating a rotative force. The device further includes an inner drilling device adapted to the motor means and an outer drilling device... | 12/08/1998 |
| 5833404 | 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... | 11/10/1998 |
| 5775853 | Machining method and multi-function tool An improved device and method for use in machining a workpiece, which includes a tool body with a machining tool having two machining surface, wherein one of the machining surfaces is being selectively movable between a retracted position and an extended ... | 07/07/1998 |
| 5758999 | Hydraulically powered spindle for working metals and composite materials An apparatus for machining is disclosed having a hydraulic motor directly coupled to a tool spindle. Mounting means are provided for mounting the hydraulic motor and spindle to a machine tool. A source of hydraulic fluid is provided at a pressure that var... | 06/02/1998 |
| 5630685 | Toolhead assembly for machine tools A toolhead assembly for a machine tool generally consisting of a housing supportable on the machine tool and having at least one elongated bore therein, a liner formed of a structural polymer material disposed in the bore, adhesively secured to the housin... | 05/20/1997 |
