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:
Aug. 14, 2007
Filed:
Aug. 12, 2004
Anthony J. Lammers, Gates Mills, OH (US);
John R. Nottingham, Bratenahl, OH (US);
John W. Spirk, Gates Mills, OH (US);
Daniel Jay Wanhainen, Stow, OH (US);
Jeffrey Scott Plantz, Cleveland, OH (US);
Anthony J. Lammers, Gates Mills, OH (US);
John R. Nottingham, Bratenahl, OH (US);
John W. Spirk, Gates Mills, OH (US);
Daniel Jay Wanhainen, Stow, OH (US);
Jeffrey Scott Plantz, Cleveland, OH (US);
InnoDesk, Inc., Beachwood, OH (US);
Abstract
A capless retractable sealed marking instrument has a sealed chamber incorporated in a marker casing. The sealed chamber includes a chamber, a wiper ring, and an annular rim and a seal portion with a cross-slit aperture defining surfaces or flaps which are moved out of contact by a linearly-advanced marker nib to open the seal for extension of the marker nib. The configuration of the disk provides positive sealing force between the lateral sealing surfaces of the seal flaps. Retraction of the marker nib draws the flaps back into the sealed chamber configuration to protect the marker nib and cartridge from atmospheric degradation.