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 |
| 7513719 | Reaming tool for broken conduit A reaming tool for reaming a socket in a broken end portion of a cylindrical conduit enlarges the internal diameter of the broken end portion to provide a socket for receiving a male end portion on a repair coupling. The reaming tool is guided by the inner diameter ... | 04/07/2009 |
| 7402011 | Work piece centering device and method of broaching A device for centering a work piece with respect to a centerline of a tool includes a radially-stationary component rigidly secured with respect to the tool such that the radially-stationary component and the tool are concentric. A biasing mechanism is biased away f... | 07/22/2008 |
| 7305746 | System for removing heat transfer fins from, and beveling the ends of, boiler tubes A system is disclosed to use a first rotary milling head to break or cut the bond of a heat transfer fin base to a boiler tube, thereby removing the heat transfer fins from the boiler tube, and a second rotary milling head to bevel the exposed end of the boiler tube... | 12/11/2007 |
| 7172373 | Deburring tool with quick change knife The invention relates to a deburring tool with a quick change knife, which is formed by at least two parts, namely a guide sleeve having a larger diameter and a center bore, and a base body that can be inserted in the center bore in an axial direction. The base body... | 02/06/2007 |
| 7140816 | Multi-functional tube milling head A milling head for a rotary tool, which is preferably utilized to process, prepare, or otherwise impart a desired finish to a workpiece, preferably an end portion of a tube. In a preferred embodiment, the milling head includes at least three different cutting or mil... | 11/28/2006 |
| 7104737 | Pipe beveling tool and method A hand-held pipe beveling tool makes the job of manually beveling the ends of plastic pipe very simple and easy to perform. The pipe beveling tool includes a frame that defines an opening for receiving the end of a pipe. One or more pipe forming members are coupled ... | 09/12/2006 |
| 7104121 | Valve seat gauging system A gauging system for checking a valve seat and a valve guide of an engine part, the system comprising: a gauge support mountable to a stable platform; a gauge which, in use, depends from the gauge support and has a... | 09/12/2006 |
| 7093360 | Method of removing boiler tubes Boiler tubes are removed from a boiler vessel without damaging the vessel by severing the boiler tube near the exterior periphery of the vessel, and using a piloted rotary cutting tool fixtured with respect to the longitudinal axis of the severed boiler tube to remo... | 08/22/2006 |
| 7070364 | Reverse chamfer and countersink tool A reverse chamfering and countersink stop tool allows the required diameter of a countersink in a workpiece to be maintained in areas that have limited accessibility for the user assembling a fastener to the workpiece. The tool controls the dimension required for pr... | 07/04/2006 |
| 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 |
| 6993848 | Pipe preparation device A pipe preparation device is disclosed for chamfering pipe ends and placing witness marks thereon to provide a visible indication that the pipes are properly engaged with a coupling. The device includes a body having co-axially aligned receptacles at opposite ends, ... | 02/07/2006 |
| 6957936 | Tool for machining pipe ends A tool for removing material or machining the end of a pipe. The tool having at least one and preferably two blade plates. Each blade plate includes a first cutter for machining an end surface of the pipe, a second cutter adjacent the first cutter for producing an i... | 10/25/2005 |
| 6929430 | Pipe fitting removal tool A method and tool are disclosed for removing a plastic water closet flange from the waste pipe to which it is attached so that a new flange may be chemically bonded to the existing waste pipe. A preferred embodiment of the water closet flange removal tool includes a... | 08/16/2005 |
| 6902357 | Cutting tool A rotatable cutting tool having s support region (1) with an end surface (2) and a plurality of recesses (4) extending from the end surface (2) and in which, respectively, a plurality of cutting elements (5) are arranged, with each... | 06/07/2005 |
| 6843621 | Reamer A tapered reamer is disclosed. The reamer is used to make a tapered opening in a cylinder used in a crossing gate repair kit. A straight reamer is also disclosed. ... | 01/18/2005 |
| 6640410 | Line transfer system with a contour machining head A line transfer system with a contour machining head. The system includes a transmission arbor, a housing, a contour machining head, a driving system, and a system controller. The transmission arbor mounts within the housing, with the transmission arbor a... | 11/04/2003 |
| 6530727 | Contour machining head The machining head for machining valve seats comprises a driving system, a housing, a carriage feed assembly, a cutting tip mounted on the carriage, and a counterweight assembly. The driving system rotates a machining head on a spindle axis, and further p... | 03/11/2003 |
| 6517296 | Hole finishing tool A hole-finishing hole finishing tool includes a pilot cone within which a quarter round section is free to be displaced in an axial direction. The quarter round section is resiliently biased away from a workpiece. When the tip of the pilot cone is inserte... | 02/11/2003 |
| 6471450 | Countersink cage A countersink cage for controlling a rotating countersink cutter to penetrate to a predetermined depth through a curved surface along a cutting axis. More specifically, the countersink cage comprises a top cage member with a top aperture which is formed f... | 10/29/2002 |
| 6382883 | Method for lapping valve seats using a single point cutting tool The cutting tool for machining valve seats comprises a driving system, a spindle assembly, and a system controller. The driving system provides rotational movement and vertical movement for the spindle assembly which is controlled by the system controller... | 05/07/2002 |
| 6352394 | Flex drive tool The present invention provides for a readily exchangeable flex tool for machining a workpiece. The flex tool includes a driver and an tool carrying body. The driver is coupled to the tool carrying body in a manner which allows the tool carrying body to ha... | 03/05/2002 |
| 6109839 | Combination precision drill guide and replacement part A kit for repairing a worn out of round aperture. The kit includes a template which is later utilized as a part of the repair. In a first embodiment, the template is precisely located by means of utilizing the bottom of the aperture which does not become ... | 08/29/2000 |
| 6086293 | Cutting tool for machining valve seats The cutting tool for machining valve seats comprises a driving system, a machining head, a pilot, a depth gauge, and a system controller. The driving system provides rotational movement and vertical movement for the machining head which is controlled by t... | 07/11/2000 |
| 6048141 | Tool for enlarging hole A tool for enlarging the size of an existing bore to a selected enlarged size. The tool has a drill sized to define the enlarged bore, and a guide having a cylindrical body sized so that the guide can be rotated in the existing bore. The guide and drill i... | 04/11/2000 |
| 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 |
| 6033161 | Revolving pilot tool The invention is a revolving pilot tool. The inventor's revolving pilot has a cylindrical shank which is attached to the tool usually in the center of the bottom of the tool. This shank has a threaded opening in its center. Over the shank is placed a cyli... | 03/07/2000 |
| 5997222 | Externally indexing countersink pilot guide This invention is a countersink, counterbore or spotface, external pilot guide 98 which aligns a countersink cutter's edges 170, 171 and 172 into the center of a pre-drilled hole 15. The pilot guide indexes and attaches by lock down screw 165 to the count... | 12/07/1999 |
| 5827018 | Countersink cutters having a free-spinning pilot This invention discloses an improved cutting tool such as a counterbore cutter or piloted reamer that is comprised of a free-spinning pilot connected to the cutting tool. The free-spinning pilot allows the cutting tool to rotate within it while it makes f... | 10/27/1998 |
| 5649793 | Self centering drilling tool The present invention is a self centering drilling device and is more particularly concerned with the aspect of precise location for removal of material with various sizes of drill bits, using the same drill bit holder.... | 07/22/1997 |
| 5542177 | Boiler tube bank repair A method and apparatus for repairing boiler tube walls by cutting out and replacing a worn or damaged section thereof involves the use of a power tool having a rotary milling head specially adapted to remove membrane material from between tube ends which ... | 08/06/1996 |
| 5531550 | Clamp release mechanism for an end finishing tool An end finishing tool includes a mandrel with a plurality of ribs at its distal end; an actuator longitudinally moveable in a first direction relative to the mandrel for moving the ribs radially outwardly in the installation mode to grip the inner surface... | 07/02/1996 |
| 5401126 | Tool for removing end of cut-off pipe from a pipe coupling A bit usable in combination with a rotatory driver, such as a drill, for extracting a remnant of a cut-off pipe from a pipe socket. The bit comprises a forward portion which is a pilot to keep the bit centered in the remnant and thereby centered in the pi... | 03/28/1995 |
| 5232317 | Indexable spherical seat cutter A rotatable cutting tool for cutting a spherical seat carries a plurality of indexable cutting inserts at the front end of the cutter body. The inserts are located in pockets and retained in the pockets by respective retainer members mounted on the body a... | 08/03/1993 |
| 5213455 | Tool for removing a bearing A bearing may consist of one or more components where relative motion can take place between the bearing surface and a mating surface and where the mating surface may be a component of the bearing. Many bearings are circular and may be installed and secur... | 05/25/1993 |
| 5171110 | Apparatus and method for counterboring a pipe An apparatus (10,100) for counterboring a pipe is attached to a pipe end surfacing machine (12) and is comprised of a frame (14) pivotally mounted to a flywheel (16). A cutting tool (50) and guide wheel (72) are attached to said frame (14). Means (91) for... | 12/15/1992 |
| 5149231 | Counterbore A counterbore for enlarging an existing hole in the presence of a wire having an end extending through the hole. The counterbore includes a twist drill bit of a size of the enlarged hole to be drilled, a shank at the rear end of the bit for engagement wit... | 09/22/1992 |
| 5052864 | Counterbore milling cutter Counterbore milling cutter employing Trigon inserts mounted with the active cutting edge extending radially to provide right angle counterbore corners with 84° included angle cutting points for greater strength and support than possible with conventional... | 10/01/1991 |
| 5013193 | Closet flange reboring tool A plastic closet flange reboring tool having an elongated arbor, a cutting member and two exchangeable non-circular guide members. The arbor having a first end structured of a D-shaped threaded extension, and a second end structured for releasable connect... | 05/07/1991 |
| 5000629 | Self-centering plastic pipe router tool A self-centering plastic pipe router tool is described for routing of a sawed-off end of pipe from the interior surface of a salvageable pipe. The router tool is a disk with an axial shank on one side of the disk. A pair of cutting flanges extend radially... | 03/19/1991 |
| 4975001 | Plastic pipe reboring tool An improved plastic pipe reboring tool having an elongated shank, a generally concavo-convex cutting head, and changeable guide discs effective for cleaning residue glue and plastic from used plastic pipe and fittings so they can be used over again. The r... | 12/04/1990 |
