Class 451/93 - Magnetic

Subclass of Class 451 - Abrading
Definition: Abrading machine wherein the propelling means is capable
No. of patents: 20
Last issue date: 11/20/2007

Number	Title	Issue Date
7297286	Methods for resist stripping and other processes for cleaning surfaces substantially free of contaminants A method for manufacturing an article having polymeric residue that is to be removed during the manufacture of the article is disclosed. The article is introduced into a controlled environment of a processing tool having one or more processing chambers. Free radical...	11/20/2007
7291058	Method and apparatus for improving media flow The flow of media in shot peening, blast cleaning, and similar equipment is improved by applying a time varying magnetic field to the media to thereby degauss the media, allowing the media to flow through equipment without clogging and clumping due to magnetic attra...	11/06/2007
6997780	Method and device for sandblasting, especially removing in a precise manner and/or compacting and/or coating solid surfaces The invention relates to a method and device for sandblasting, especially removing in a precise manner and/or compacting and/or coating solid surfaces, such as removing defective spots of paint from coats of lacquer, smoothing out soldered and welded joints, removal...	02/14/2006
6960118	Surface roughening treatment method of object being treated, and apparatus therefor Disclosed are a method of causing abrasive grains to collide against and contact with an object being treated to form surfaces of the object being treated into a matte, specifically, a rotational magnetic field is applied on magnetic abrasive grains to cause the sam...	11/01/2005
6955589	Delivery system for magnetorheological fluid A magnetorheological fluid delivery system includes a mixing and tempering vessel. Fluid is admitted to the vessel via a plurality of tangential ports, creating a mixing of the fluid in the vessel and promoting homogeneity. Fluid may be reconstituted in the vessel b...	10/18/2005
6893322	Method and apparatus for measuring and controlling solids composition of a magnetorheological fluid A system for dispensing magnetorheological fluid to an MR finishing machine includes a pump for pressurizing the system; a first magnetic valve for regulating MR fluid flow by magnetically varying the structure and apparent viscosity of the fluid through a first flo...	05/17/2005
6475063	Grinding device An automatic grinding device for sharpening the knives of a forage harvester chopper drum includes a controller including a counter for counting the number of times the grindstone is adjusted toward the chopper drum during sharpening operation. The contro...	11/05/2002
6238279	Magnetic filtration for slurry used in chemical mechanical polishing of semiconductor wafers A method and apparatus for filtering a slurry used in a chemical mechanical polishing apparatus is disclosed. Magnets are provided along the piping network between a slurry reservoir and the CMP apparatus. A magnet may also be placed adjacent to the slurr...	05/29/2001
5971835	System for abrasive jet shaping and polishing of a surface using magnetorheological fluid A fluid having magnetorheological (MR) properties and including a finely-divided abrasive material is directed through a non-ferromagnetic nozzle disposed axially of the helical windings of an electric solenoid. The MR fluid may contain magnetosoft or mag...	10/26/1999
5813901	Method and device for magnetic-abrasive machining of parts A device for magnetic-abrasive machining of a part has the steps of forming a magnetic field, arranging a part to be machined in the magnetic field, supplying a magnetic-abrasive powder in a machining zone toward a surface of the part to be machined, and ...	09/29/1998
5795212	Deterministic magnetorheological finishing A method and apparatus for finishing a workpiece surface using MR fluid is provided wherein the workpiece is positioned near a carrier surface such that a converging gap is defined between a portion of the workpiece surface and the carrier surface; a magn...	08/18/1998
5779523	Apparatus for and method for accelerating fluidized particulate matter A fluid jet accelerator/pressurizer apparatus for accelerating and pressurizing a fluidized stream of particulate matter, e.g. for ice blasting, has a nozzle housing defining a main conduit, forming a passage for the flow of the fluidized stream through t...	07/14/1998
5775976	Method and device for magnetic-abrasive machining of parts A magnetic-abrasive machining of a part includes generating a magnetic field; introducing a part to be machined into the magnetic field; supplying a magnetic-abrasive powder into a machining zone toward a surface of the part to be machined; and generating...	07/07/1998
5569061	Method and device for magneto-abrasive machining of parts A method of and a device for magnetic-abrasive machining of parts has an external magnetic field providing a magnetic flux, a supply of a magnetic-abrasive powder to the part in the magnetic field. The part is rotated and oscillated about the longitudinal...	10/29/1996
5433654	Pressurized ferrofluid paint removal system using an electromagnet and eddy current encircling coil to adjust weight percentage of magnetic particles A process for removing paint by high pressure waterjet blasting of painted surfaces wherein the waterjet comprises a ferrofluid or other liquid containing tiny magnetic particles suspended therein. The particles may be in colloidal suspension or be suspen...	07/18/1995
5285601	Magnetic track self-propelled blast cleaning machine The blast machine consists of a self-propelled vehicle including a pair of independently driven magnetic treads capable of adhering to and traversing ferromagnetic vertical surfaces and the underside of ferromagnetic horizontal surfaces. The blast machine...	02/15/1994
5074083	Cleaning device using fine frozen particles A cleaning device using fine frozen particles electrically charges the fine frozen particles produced by atomizing a liquid within a refrigerated atmosphere, controlling the speed, direction and divergence of the charged particles to cause them to strike ...	12/24/1991
4680900	Device for accelerating an abrasive A device for accelerating an abrasive, which includes magnetically influenceable particles, especially iron particles, for the treatment of surfaces. The device is provided with magnet coils, which are used as accelerating elements, are arranged along the...	07/21/1987
4319436	Portable blasting device and sealing means A portable blasting device in which the space between the blast head and the surface being treated is provided with a magnetic seal formed of the particulate material with apparatus for maintaining the magnet supports for relative movement to maintain the...	03/16/1982
4140401	Cleaning apparatus and method A cleaning apparatus for small, ferrometallic, precision items, e.g., dental burs, includes a cabinet unit housing a plurality of magnets mounted on a motor driven, rotatable disc with the magnets being arranged and designed to provide a rotating, unipola...	02/20/1979

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Class 451/93 - Magnetic