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:
Jul. 20, 1999
Filed:
Nov. 05, 1997
Ronald Stephen Rukan, Simpsonville, SC (US);
Barry W Chadwick, Simpsonville, SC (US);
BIC Corporation, Milford, CT (US);
Abstract
A writing device generally including a uniformly cylindrical main body partially filled with a writing medium such as ink. A writing tip is inserted into a first end of the main body and a first sealing member is inserted into the second end thereof. The first sealing member is located in the main body near the second end. A pressurized gas such as nitrogen is disposed in the body between the ink and the first sealing member. Alternatively, a gas forming system may be provided in the main body to continually produce a gas as the ink is depleted to maintain pressure therein. A second sealing member is inserted into the second end of the main body to provide a dual seal gas pressurized system.