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.:

US 7387564 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 17, 2008

Filed:

Dec. 08, 2004
Applicant:

Poul Erik Jespersen, Roslev, DK;

Inventor:

Poul Erik Jespersen, Roslev, DK;

Assignee:

Flex Trim A/S, Roslev, DK;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B24B 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention concerns a grinding apparatus () including a number of grinding units (), a number of drive units () and a number of screen units (), where a number of the grinding units () are enclosed by at least one of the screen units (), and where at least one the screen units () is arranged with a pipe connection () adapted for connecting one or more suction units (), where the screen unit () with the pipe connection () is designed along a lower edge () with a number of spacer members () that are arranged adjustable and replaceable, and a number of sealing members () that fit tightly to an underlying surface, that the spacer members () establish an adjustment of spacing of the grinding units () relatively to an underlying surface, and that the sealing members () interact with the suction units () for forming a vacuum that holds the grinding apparatus () against the said surface during operation.


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