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:
May. 26, 2009
Filed:
Apr. 22, 2005
Harold A. Beaudoin, Sheboygan Falls, WI (US);
Wayne S. Lutzke, Plymouth, WI (US);
Hubert P. Van DE Pas, Plymouth, WI (US);
Harold A. Beaudoin, Sheboygan Falls, WI (US);
Wayne S. Lutzke, Plymouth, WI (US);
Hubert P. Van de Pas, Plymouth, WI (US);
Curt G. Joa, inc., Sheboygan Falls, WI (US);
Abstract
A vacuum wheel for securing and retaining various sizes of stretchable film is disclosed. The outer surface of the vacuum wheel includes an advantageous pattern of vacuum openings and vacuum slots, wherein the vacuum slots provide vacuum communication between at least two of the vacuum openings. A preferred embodiment provides a chevron or zig-zag shaped pattern of vacuum openings and vacuum slots configured to provide improved vacuum holding strength.