Dean J Donovan

US Patent:

6572710, Jun 3, 2003

Filed:

Aug 5, 2002

Appl. No.:

10/212489

Inventors:

Daniel O. Middendorf - Cleves OH
Thomas R. Slavik - Goshen OH
James G. Johnson - San Jose CA
Dean A. Donovan - Hamilton OH

Assignee:

Rite Track Equipment Services, Inc. - Westchester OH

International Classification:

B08B 700

US Classification:

134 6, 134138, 15 211, 15 77, 15 882, 15 883, 15102

Abstract:

A method of cleaning a substrate supported on an upper end of a spindle by first positioning a brush at a fixed elevation over the substrate. Next, the spindle is moved upward to bring the substrate into contact with the brush. Thereafter, a cleaning force on the substrate caused by the brush is measured, and the spindle is moved in response to the measured cleaning force on the substrate.

US Patent:

6446296, Sep 10, 2002

Filed:

Mar 6, 2000

Appl. No.:

09/519830

Inventors:

Daniel O. Middendorf - Cleves OH
Thomas R. Slavik - Goshen OH
James G. Johnson - San Jose CA
Dean A. Donovan - Hamilton OH

Assignee:

Rite Track Equipment Services, Inc. - Westchester OH

International Classification:

A46B 1302

US Classification:

15 77, 15 211, 15 883, 15102

Abstract:

A substrate cleaning apparatus with a vertically extending spindle having a substrate supported on its upper end. A brush extends generally horizontally over the substrate, and a force measuring gage is mounted with respect to the spindle for detecting forces applied to the substrate. A spindle drive moves the spindle upward and downward directions, and a spindle control is electrically connected to the force measuring gage and causes the spindle drive to move upward and downward in response to cleaning forces being detected by the force measuring gage.