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| Number | Title | Issue Date |
| 7198554 | Method of making valve guide having textured external surface A cylindrical valve guide having a roughened external surface texture from about 50 to about 100 microinches permits effective amounts of lubricating oil to become trapped or contained by such roughened external surface and thereby facilitates subsequent press fitti... | 04/03/2007 |
| 7198440 | Workpiece loading apparatus for machine tool Method and apparatus for positioning a workpiece in a spindle of a machine tool and/or removing a workpiece from the spindle. The machine spindle includes an axis of rotation and the workpiece includes a centerline extending between a first end surface and a second ... | 04/03/2007 |
| 7182676 | Machining apparatus and machining method of work end face, roller and roller bearing A machining apparatus 10 of an end face of a roller includes a rotatable inner disk 11, a cage 14 having a pocket portion 13 for holding a plurality of rollers 12 at predetermined intervals in a peripheral direction at an outer dia... | 02/27/2007 |
| 6969298 | Grinding machine, in particular centerless cylindrical grinding machine A grinding machine, in particular a centerless cylindrical grinding machine, comprising: a supporting table, at least one wheel disposed on at least one wheel carriage, a device for holding a workpiece to be machined, the wheel carriage being movable in each case in... | 11/29/2005 |
| 6257972 | Steady rest having linear sliding clamping bars This invention is related to a steady rest, which employs a pair of parallel, sliding, linear moving clamping bars for moving wear pads or rollers toward a workpiece.... | 07/10/2001 |
| 6018860 | Process for manufacturing drilled taper point surgical needles A process for manufacturing wire or needles having a taper point and mechanically drilled suture mounting holes in the proximal ends. Needle or wire blanks are cut from a roll of wire and mounted to a carrier strip. The carrier strip and needles are moved... | 02/01/2000 |
| 5644834 | Process for manufacturing taper point surgical needles A process for manufacturing wire or needles having a taper point. Needle or wire blanks are cut from a roll of wire and mounted to a carrier strip. The carrier strip and needles are moved through a succession of forming and trimming and grinding stations.... | 07/08/1997 |
| 5601482 | Rod-shaped workpiece grinder A rod-shaped workpiece W is supported at its circumferential surface by a shoe 14 and a pair of rolls 16 and 17, and is rotated by the rolls 16 and 17. The rod-shaped workpiece W is ground by being abut against a backing plate 19 at its one end by the rot... | 02/11/1997 |
| 5539973 | Process for manufacturing taper point surgical needles A process for manufacturing wire or needles having a taper point. Needle or wire blanks are cut from a roll of wire and mounted to a carrier strip. The carrier strip and needles are moved through a succession of forming and trimming and grinding stations.... | 07/30/1996 |
| 5486130 | Method and apparatus for simultaneously grinding multiple sleeves A grinding wheel is fixedly supported on a machine bed by bearings at each end of the wheel with a friction bearing slide mounted on a swivel plate mounted on the machine bed for movement toward and away from the grinding wheel. A headstock mounted to the... | 01/23/1996 |
| 5477604 | Process for manufacturing taper point surgical needles A process for manufacturing wire or needles having a taper point. Needle or wire blanks are cut from a roll of wire and mounted to a carrier strip. The carrier strip and needles are moved through a succession of forming and trimming and grinding stations.... | 12/26/1995 |
| 4896461 | Internal grinding machine In an internal grinding machine of the type in which a workpiece is supported by three contact points by a fixed shoe and two rolls, the present invention facilitates correct feed and discharge of workpieces one by one without regard to the diameter of a ... | 01/30/1990 |
| 4860499 | Apparatus for measuring grinding forces on ceramic parts A spark plug grinding machine is equipped with force sensors to measure grinding forces and other forces attendant to a grinding operation. Ceramic spark plug insulators are carried by spindles on a Ferris wheel into a grinding station. A control wheel en... | 08/29/1989 |
| 4712332 | Centerless and center-type grinding system A centerless grinding system comprises a driven grinding wheel, a driven regulating wheel, and a work rest blade for centerless grinding of a workpiece supported by the work rest blade between the grinding wheel and the regulating wheel; means for determi... | 12/15/1987 |
| 4671018 | Rigid disk finishing apparatus A rigid disk finishing apparatus characterized by an eccentric spindle of small diameter engaging the inner circumference of a rigid disk; a drive mechanism engaging the outer circumference of the rigid disk to rotate the disk around an axis parallel to b... | 06/09/1987 |
| 4651472 | Method of and machine for grinding rotary workpieces The grinding of successive workpieces in a surface grinding machine with automatic transport of workpieces to and from the grinding station is interrupted at preselected intervals to replace the workpiece at the grinding station with a pattern which is co... | 03/24/1987 |
| 4562669 | Machine for grinding cylindrical workpieces A grinding machine for grinding the peripheral surface of a cylindrical workpiece having a rotatable axle extending from it by a rotating grinding roller has a feeding device which grips the axle of the workpiece and advances the workpiece against the per... | 01/07/1986 |
| 4531327 | Centerless grinding machine with ferris wheel arrangement A centerless grinding machine is provided with a ferris wheel arrangement having multiple, circumferential pockets in which an annular workpiece is received from a loading chute, is internally ground by a grinding wheel and is discharged into an unloading... | 07/30/1985 |
| 4519166 | Workpiece handling apparatus for grinding machines Workpiece handling apparatus for use in grinding machines wherein a pair of unground workpieces can be transported from holding or feed apparatus to a respective pair of load positions at the grinding wheel and simultaneously unload a pair of finished or ... | 05/28/1985 |
| 4242840 | Workpiece drive wheel for a grinding machine A drive wheel for rotating a workpiece while the latter is in contact with a grinding wheel during a grinding operation. The drive wheel is in the form of a pneumatic tire with a tire valve which permits easy variation of the internal pressure in the driv... | 01/06/1981 |
| 4112627 | Glass cylinder subdividing apparatus and method Small-diameter vitreous cylinders, for example glass tubes, are maintained under lateral (radial) compression and are precision rolled through grinding wheels, thus fully separating the cylinders into as many cylindrical components as desired. The rolling... | 09/12/1978 |
| 4094107 | Feed mechanism for use in a centerless grinding machine A feed mechanism for feeding a workpiece from a first position to a second position comprises a drive member having a carriage mounted thereon, the assembly of drive member and carriage being reciprocable between the first and second positions. The carria... | 06/13/1978 |
| 4085548 | Apparatus for manufacture of insulation products The invention provides an apparatus for manufacturing lengths of tubular fibrous pipe insulation, the improvement comprising the provision for an abrasive treatment apparatus comprising conveyor means operable to receive such lengths mounted on their resp... | 04/25/1978 |
| 4055027 | Method and relative device for checking the working conditions during the grinding in centerless grinders A measuring and control method to check the position and/or wear of a knife element supporting a piece being machined in centerless grinders including foreseeing the generation of signals responsive to the position of the workpiece surface close to the su... | 10/25/1977 |
| 4043767 | Centerless grinding machine using tangential-feed method A centerless grinding machine of tangential feed type including a work holder which is divided into a workrest for holding a workpiece as well as for loading and unloading same to and from grinding position, and a workrest holder for supporting the workre... | 08/23/1977 |
| 3954164 | High frequency loader assembly A loader assembly for use with a machine tool comprising a drum-shaped carrier including a plurality of equispaced workpiece receiving recesses, means for selectively indexing the drum-shaped carrier, a workloading chute including means for sequentially a... | 05/04/1976 |
