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 7980039 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 19, 2011

Filed:

Sep. 02, 2008
Applicants:

Carsten Groeke, Berlin, DE;

Thomas Grafenauer, Ouzouer-sur-Loire, FR;

Inventors:

Carsten Groeke, Berlin, DE;

Thomas Grafenauer, Ouzouer-sur-Loire, FR;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04B 5/00 (2006.01); E04C 2/38 (2006.01);
U.S. Cl.
CPC ...
Abstract

A device for connecting and locking two building boards, in particular floor panels, on their longitudinal sides and/or transverse sides in the horizontal and vertical direction through an essentially vertical joining movement. The building boards have a top side and an underside. On their lateral edges to be connected to one another are provided with profiles corresponding to one another. A locking element with a locking projection is provided in the profile of the first building board. The locking projection interacts with a locking depression provided in the profile of the second building board such that the two building boards are automatically locked in the vertical direction with the joining movement. The locking element is embodied in an essentially rigid manner and the locking projection can be brought into the locking depression through a rotary motion of the locking element.


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