The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1998
Filed:
Nov. 30, 1995
Applicant:
Inventors:
Karl Kasprzyk, Gilbert, AZ (US);
Isao Nagahashi, Fujisawa, JP;
Assignee:
Speedfam Corporation, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ; B24B / ; B24B / ;
U.S. Cl.
CPC ...
451262 ; 451267 ; 451282 ; 451286 ; 451290 ; 451339 ;
Abstract
In a polishing machine for polishing parts between a table and an upper polishing head, the upper polishing head includes push rods to clear the workpieces after a polishing operation. A push ring engages the push rods as a polishing head is being raised, holding the workpieces in position on the table.