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:
Oct. 01, 1985
Filed:
Dec. 30, 1983
Claude R Grossiord, Annecy, FR;
S. T. Dupont, Paris, FR;
Abstract
An improvement in a ballpoint pen having an ink cartridge with a writing nib slidably mounted in the body of the pen and translatable between a resting position wherein the nib is retracted within the body of the pen and a writing position wherein the nib is disposed outside of the pen body, the ink cartridge being provided in the vicinity of the nib with at least one orifice for supplying the ink cartridge with air, the improvement including a chamber sealed from the ambient atmosphere in both the resting and writing positions, the orifice being disposed within the chamber, and an interruptable sealing mechanism for establishing communication between the chamber and the ambient atmosphere whenever the ink cartridge is translated between the resting and writing positions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile