Andrew P Donovan

US Patent:

6921322, Jul 26, 2005

Filed:

Jan 24, 2003

Appl. No.:

10/350625

Inventors:

Andrew E. Donovan - Waltham MA, US
Edmund L. Pessa - Arlington MA, US
David A. Hudson - Stoughton MA, US

Assignee:

Artisan Industries, Inc. - Waltham MA

International Classification:

B24B015/03

US Classification:

451252, 451115, 451430, 451443, 451 49, 451 51, 451 63

Abstract:

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 precision leveling adjusters. During operation, the adjusters are turned in precision increments to set the depth of cut. The grinder is then rotated on an arm about the center of the disk, by the use of a hydraulically driven speed reducer, rotor, bearing assembly. In a further aspect, the invention includes a dressing assembly for performing dressing-truing on a vitreous wheel when the wheel is in grinding position. The in position dressing assembly dresses a grinding wheel at up to 0. 00125-inch increments.

US Patent:

41711645, Oct 16, 1979

Filed:

Dec 12, 1977

Appl. No.:

5/859579

Inventors:

William H. Groves - Waltham MA
Andrew E. Donovan - Waltham MA

Assignee:

The Kartridg Pak Co. - Davenport IA

International Classification:

B01F 1504

US Classification:

366152

Abstract:

A method and apparatus is provided for formulating meat blends to a desired fat percentage by continuously measuring in a non-destructive manner the percentage of fat in meat streams while they are flowing, and thereafter blending the streams into the desired formulation. Although the meat streams are of non-uniform consistency and density, accurate blending is accomplished by including a sensor that automatically and continuously monitors the meat streams to enable corrections for such non-uniformity. Percentage fat measurements are made by passing a beam of polychromatic X-rays through the streams and measuring both the incident and attenuated beams.