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| Number | Title | Issue Date |
| 6321778 | Apparatus for pipeline construction An apparatus for pipeline construction comprises a constructing means located on the lower part of the apparatus, which includes a chest and a unit for completing the operation of construction; a feeding means located on the upper part of the apparatus, w... | 11/27/2001 |
| 5700115 | Speed-increasing spindle device A speed-increasing spindle device in an assembly structure in a separable form of device main body and shank, capable of using a coupling bolt of large diameter, high in rigidity, and sufficient in strength. The head of the coupling bolt is rotatably enga... | 12/23/1997 |
| 5295772 | Traction drive tool adapter A traction drive tool adapter is adapted to detect an overload on a planetary roller speed increasing mechanism which occurs due to an excessive depth of out, and prevent the breakage of the planetary roller speed increasing mechanism and the imperfect pr... | 03/22/1994 |
| 5281061 | Separable rotary tool adapter A separable rotary tool adapter consists of a low-speed rotary unit (A) having casings (1, 2); a first rotary shaft (3) in the casing connectable to a driving shaft of the machine tool and a second rotary shaft (5) orthogonally drivingly connected to the ... | 01/25/1994 |
| 5193949 | Arrangement for driving a rotary tool An arrangement for driving a rotary tool is provided in which the tool shank is engaged and frictionally driven by the engagement of three or more drive rollers. Axial movement of the tool is accomplished by tilting the axes of the rollers as permitted by... | 03/16/1993 |
| 5033921 | Traction drive tool adapter A traction drive tool adapter, has a rotary portion provided at its front half section with planetary roller-inserting bores extending radially from the outer circumferential surface of the rotary portion into a central bore therein, each of the roller-in... | 07/23/1991 |
| 4981403 | Speed-up spindle unit A speed-up spindle unit including a non-rotative housing having a fixed ring, a sun roller secured to a high speed spindle rotatably carried in the housing and a plurality of planetary rollers rotatably carried in such a manner as to be in contact with th... | 01/01/1991 |
| 4960405 | Traction drive spindle device A traction drive spindle device includes an input shaft connectable to a drive main shaft for rotation therewith. A hollow holder shaft is connected to an output end of the input shaft in coaxial relation thereto, the hollow holder shaft having a pluralit... | 10/02/1990 |
| 4950110 | Rotating tool and traction drive unit therefor A rotating tool includes a drive source, a work piece, and a traction drive unit intercoupled between the drive source and work piece. The traction drive unit includes a unit case having a through-hole, a drive shaft and a follower shaft inserted into the... | 08/21/1990 |
| 4741650 | Tool holder A tool holder has a prime shaft which receives an external torque and is partly accommodated in and partly projects from a casing; a speed reduction unit having a coaxial three-layer structure consisting of a wave generator, a flexible spline and a circul... | 05/03/1988 |
| 4681492 | High-speed spindle A spindle apparatus is composed of a holding member to define a casing, a spindle shaft to support a rotor rotatably, a neck bearing disposed radially of the spindle shaft, a buffer disposed between the holding member and the neck bearing, an end bearing ... | 07/21/1987 |
| 4641551 | Apparatus for translating rotational motion and torque The present invention provides apparatus which can be incorporated into a powered instrument that rotates a tool at varying rotational speeds and torques. The invention includes at least two drive plates, each of which rotates at a different speed and whi... | 02/10/1987 |
| 4609310 | Drilling machine A drilling machine for use in industrial furniture production includes a drill spindle carrier which is rotatably mounted in a gear block. Two rows of drill spindles are staggered with respect to each other by 90°. Driving pinions of the drill spindles a... | 09/02/1986 |
| 4597453 | Drive unit with self-aligning gearing system A drive unit for a power tool has a motor driven output gear rotatable about an output axis, a rotatable carrier plate, and a plurality of idler gears rotatably mounted on pins affixed to the carrier plate such that the gears engage the periphery of the o... | 07/01/1986 |
| 4380991 | Drilling device In a device for drilling rock, concrete, reinforced concrete and similar materials, a spindle is rotatably mounted in a housing and a drilling tool is replaceably mounted on the spindle so that the spindle and drilling tool rotate together. A gear wheel i... | 04/26/1983 |
| 4365916 | Turning type multi-spindle attachment The invention provides a turning type multi-spindle attachment used for mounting a plurality of drills or taps to a drilling or tapping machine. This attachment comprises a mounting cylinder fixed to the spindle quill of the drilling or tapping machine an... | 12/28/1982 |
| 4227840 | Drilling attachment for chain saw A drilling attachment adapted to be fixed to a chain saw and a chain saw so equipped wherein the driving output shaft and a drill chuck are advantageously connected by a pair of friction drive wheels to produce clockwise rotation of the drill chuck and th... | 10/14/1980 |
| 4219293 | Workpiece perforating machine A machine for perforating workpieces, particularly corrugated plastic drain pipe or tile, to produce holes using drills is described. Multiple drills are radially mounted on a guide wheel so that the individual drills are sequentially extendable from the ... | 08/26/1980 |
| 4209274 | Portable power drive A lightweight power drive for threading pipe and the like includes an integral folding tripod stand. A motor casing is built into one leg of the stand, and the casing includes integral sockets in which the other two legs are hinged.... | 06/24/1980 |
| 4182588 | Positive feed drill A positive feed drill having an elongated spindle mounted for reversible longitudinal motion in a drill housing. The spindle has an hexagonal cross-section with the apices of the hexagon being threaded. A toothed drive gear having a hexagonal aperture cen... | 01/08/1980 |
| 4178495 | Apparatus for welding studs to workpieces Apparatus is provided for welding studs to workpieces. The invention is particularly concerned with welding studs to workpieces made of materials having relatively low electrical resistance but covered with layers of other materials having higher electric... | 12/11/1979 |
| 4154122 | Hand-powered tool A hand-powered tool in which a spindle for driving a tool attachment is driven by a bevel gear. The spindle is supported in bearings on both sides of the bevel gear and extends through an opening in a stationary transverse shaft on which the bevel gear is... | 05/15/1979 |
| 4097175 | Machine for drilling holes in right-angular work surfaces A drilling machine comprises a ram movable up and down on a carriage slidably mounted on a horizontal crossrail. A toolhead is mounted on the bottom end of the ram for pivotal movement about a horizontal axis at right angles with the crossrail and is pivo... | 06/27/1978 |
| 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 |
| 4060334 | Machine for machining bars and tubes A machine for machining bars, rods, tubes and similar articles, e.g. by cutting a thread thereinto is provided with a cutting head journalled by means of a spindle or the like on a housing, and is also provided with a motor, e.g. an electric motor, which ... | 11/29/1977 |
