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Class 451/115 - Of valve and seat


Subclass of Class 451 - Abrading
Definition: Abrading machine in which the abrading is accomplished by
No. of patents: 10
Last issue date: 02/21/2006


NumberTitleIssue Date
7001255Thermostat gasket cleaner
A gasket removal and cleaning tool includes a drive rod rotatably retained within a sleeve enabling the rod to be driven by a die grinder. The opposite end of the drive rod projects from the sleeve and includes an abrasive element that may be used to remove a seal f...
02/21/2006
6921322Apparatus and methods for refinishing a surface in-situ
The invention features a self-contained, portable apparatus for performing precision grinding operations on metal disks of up to, e.g., 54 inches in diameter. The apparatus can be attached to the surface of the disk to be refinished and is leveled using special prec...
07/26/2005
6913528Low amplitude, high speed polisher and method
A method and apparatus for improving uniformity of the rate of removal of material from the surface of a workpiece, such as semiconductor substrate, by polishing. In accordance with the invention, the workpiece is subjected to a vibratory polishing method, and optio...
07/05/2005
6267653Device for grinding an end face, especially an annular surface at the edge of a workpiece bore
A device for grinding an end face at an edge of a workpiece bore of a workpiece has a driven grinding tool and a guide pin, connected to the grinding tool, for insertion into the workpiece. The guide pin is dimensioned so as to precisely match the workpie...
07/31/2001
5934976Method for grinding a taper surface and grinding apparatus using the same
A lower side of a rotatable grindstone spindle is connected directly to a PZT (Piezoelectric element). By changing electric drive supplied to the PZT, reciprocating movement can be applied to the grindstone through the grindstone spindle in addition to ro...
08/10/1999
5890659Valve closing body and process and device for producing sealing seats on valve closing bodies
A new process in which a valve closing body is produced with a predetermined inclination in relation to a longitudinal tool axis. The valve closing body is set in rotation and thereby carries out a precessing motion so that the tool body that rests agains...
04/06/1999
5634842Apparatus for the precision grinding of conical seats for cylindrical nozzle workpieces
An apparatus for the precision grinding of conical valve seats of nozzles, for example, injection nozzles for internal combustion engines. The body is entered hydraulically on a mandrel and a driver has a rubber O-ring braced against the nozzle body to fr...
06/03/1997
5591068Precision non-contact polishing tool
A non-contact polishing tool that combines two orthogonal slurry flow geometries to provide flexibility in altering the shape of the removal footprint. By varying the relative contributions of the two flow geometries, the footprint shape can be varied bet...
01/07/1997
5315792Method for producing sealing faces on valves
A method for treating valves having a sealing seat embodied on a movable valve element and a valve seat face embodied on a valve seat body in such a way as to improve the surface quality of the sealing faces. The movable valve element is set into a rotati...
05/31/1994
5303509Apparatus for producing sealing faces on valves
An apparatus for treating valves having a sealing seat embodied on a movable valve element and a valve seat face embodied on a valve seat body in such a way as to improve the surface quality of the sealing faces. The movable valve element is set into a ro...
04/19/1994
 
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