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, 2015
Filed:
Dec. 30, 2011
Christoph Gillum, Middletown, OH (US);
Christopher Matice, Bellbrook, OH (US);
David Parrott, Cincinnati, OH (US);
Anup Paul, Mason, OH (US);
Haskell Simpkins, Cincinnati, OH (US);
Robert G. Challman, Naperville, IL (US);
James F. Yoder, Blanchester, OH (US);
Christoph Gillum, Middletown, OH (US);
Christopher Matice, Bellbrook, OH (US);
David Parrott, Cincinnati, OH (US);
Anup Paul, Mason, OH (US);
Haskell Simpkins, Cincinnati, OH (US);
Robert G. Challman, Naperville, IL (US);
James F. Yoder, Blanchester, OH (US);
SANFORD, L.P., Downers Grove, IL (US);
Abstract
A micro motion poppet valve for a writing instrument provides delivery of ink with large pigment particles to a porous writing nib with minimal nib movement and relatively light actuation forces. The micro motion poppet valve includes a nib connected to a valve stem, the valve stem being connected to a valve plug. A valve body is integrally formed with a biasing element, which biases the valve stem towards a closed position. When a user presses the nib against a writing surface the valve plug moves away from a raised valve seat located on the biasing element to allow ink to flow from an ink reservoir to the nib.