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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7246976 | Spade bit An embodiment of a spade bit has straight grooves at a lead angle of 4 to 8 degrees placed on flat edges of the spade bit. In an alternative embodiment, a spade bit has two steps of straight grooves at a lead angle of 4 to 8 degrees placed on flat edges of the spade... | 07/24/2007 |
| 7223054 | Spiral groove pipe joint machining assembly A spiral spline groove machine apparatus for manufacturing a sealed spiral spline pipe connection by machining spiral grooves into the bell and spigot end of a length of pipe. A rotating cutter is adapted to cut a spiral groove in the inside of the bell of the pipe ... | 05/29/2007 |
| 7182556 | Drill and throwaway insert A drill improving the aligning accuracy of an insert and achieves a stable machining operation while maintaining the strength of the drill main body. The drill includes a drill main body rotatable about an axis, and a throwaway insert detachably attached to the dril... | 02/27/2007 |
| 7140814 | Spade-type drill bit having helical configuration A spade bit including a longitudinally extending shaft having a cutting member located at a distal end thereof. The cutting member comprises a pair of helically shaped, opposed blades joined along the longitudinal axis of the shaft and an axially extending pilot spu... | 11/28/2006 |
| 7066694 | Cutting plate for a drill bit A cutting plate (4) has a working end (20) to engage a workpiece and an axis (8) of rotation. A pair of oppositely arranged first faces (34) are inclined axially rearward from the working end (20) in an axial plane intersecting sai... | 06/27/2006 |
| 7048479 | Machine tool apparatus A machining tool has a tool holder aligned on an axis of rotation β of its shaft, which axis β is oblique to the axis of rotation of a spindle at a predetermined angle θ. Accordingly, the machining tool may perform oblique machining of a workpiece. A power transm... | 05/23/2006 |
| 7014397 | Self-aligning handheld tapping tool A self-aligning tapping tool comprises an elongate handle having a longitudinal counterbore through a first end. A tap is received in the counterbore. A collar is operatively secured to the tap. The collar is slightly smaller than the counterbore to enable slidable ... | 03/21/2006 |
| 5328306 | Tool spindle, in particular boring spindle A tool spindle for machining or producing elliptical surfaces, particularly elliptical bores, includes a housing (1) of two parts (31 32), a sleeve (2) rotatable mounted in the housing, a tool carrier shaft (3) rotatably mounted in the interior of the sle... | 07/12/1994 |
| 5149230 | Rotating dual attachment receptacle apparatus tool A rotating dual attachment receptacle apparatus tool which allows the operator to use more than one tool accessory without the need of frequent changing of the drilling, driving or fastening accessory. The rotating apparatus tool has three (3) major parts... | 09/22/1992 |
| 5024565 | Hand tool A hand tool can remove burrs from an aperture in a workpiece. The tool has a hollow handle and a shaft rotatably mounted in the handle to reciprocate axially therein. The tool has a thruster for urging the shaft to extend axially. A rider is mounted in th... | 06/18/1991 |
| 5007778 | Portable power tool for milling tube ends A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compresseed air. The motor directly drives a rotary milling head which is axially align... | 04/16/1991 |
| 4915552 | Portable power tool for milling tube ends A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compressed air. The motor directly drives a rotary milling head which is axially aligne... | 04/10/1990 |
| 4854789 | Cutting tool assembly A cutting tool assembly and, more particularly, a novel holding device for cutting tools, especially such as flat beaded drill bits which are employed in the drilling of track rail. A tool holder possessing a generally solid cylindrical construction, havi... | 08/08/1989 |
| 4726717 | Deep-bore drilling machine A deep-bore drilling machine consists of a deep-bore drilling unit (1) which is driven by rotation and has a deep drill tool (4, 7). The front end (7) of the deep-bore drilling tool (4) is led into the drill bushing (10) at the beginning of the drilling o... | 02/23/1988 |
| 4668133 | Boring bar assembly A boring bar assembly for boring large diameter turbine bores in the field, the assembly utilizing a small hydraulic motor which drives a boring bar through an in line double reduction gear drive with a reduction ratio in excess of 100:1 and an output sha... | 05/26/1987 |
| 4621956 | Method and apparatus for cutting of flexible foam material An apparatus and process for the continuous cutting of a generally cylindrical rod from soft flexible polymeric foam slabs is disclosed. The apparatus includes a drive for moving a length of the foam slab along a predetermined path, a guide for restrictin... | 11/11/1986 |
| 4616385 | Rotary synchronous cross drilling attachment What is proposed is a drilling attachment for use with a machine tool that rotates a workpiece in which the drilling apparatus is moved into an operative position to the workpiece by means of the machine tool slide and is rotated with the workpiece so tha... | 10/14/1986 |
| 4082475 | High speed reamer attachment for coaxial drive fastener gun There is disclosed an attachment for a counter-rotating coaxial drive fastener gun having a cylindrical housing adapted to be threadably attached to the outer drive member of a coaxial drive fastener gun and having an inner cavity with a ring gear fixedly... | 04/04/1978 |
| 4066379 | Rotary tool assembly having removable working elements A drill bit or other working tool is provided with driven end segments which are removably received in longitudinal slots formed in a shank. The slots bottoms are contacted by the driven end segments to align the working tool with the shank; and, slot sid... | 01/03/1978 |
| 4066380 | Combined boring and threading tool The invention relates to a threading tool for internal threads with a cutter holder which is displaceably mounted on a cutter holder carrier shaft co-axial to the main axis of the rotatable tool which coincides with the thread axis during the cutting proc... | 01/03/1978 |
| 3951564 | Pipe or tube cutter for hand drills A right angular gear drive attaches directly to an electric hand drill following removal of the drill chuck. A power-operated tube cutter and burr remover are driven directly by the output shaft of the gear drive. A slide is fixed to the gear drive immedi... | 04/20/1976 |
