Coating implements with material supply – Projectable and retractable tool – With movable closure or gate
Reexamination Certificate
2008-03-11
2008-03-11
Walczak, David J. (Department: 3751)
Coating implements with material supply
Projectable and retractable tool
With movable closure or gate
Reexamination Certificate
active
10864096
ABSTRACT:
A retractable writing instrument may include a barrel having a front opening, a nib for moving through the front opening of the barrel between an extended position and a retracted position, a cartridge for receiving the nib and for folding a supply of ink, and a seal assembly received within the barrel through which the nib is passable. In a number of embodiments, when the nib is in the retracted position, the seal assembly is biased closed to seal the front of the retractable writing instrument. In addition, an outer surface of the cartridge may contact the seal assembly to form a rear seal such that a tip of the nib is positioned within the body member between the two seals. Accordingly, in these embodiments, the nib is sealed from ambient air when in the retracted position, thereby minimizing evaporation of ink from the cartridge. IN addition, the nib may be urged through the seal assembly while moving to the extended position to open the front of the retractable writing instrument. The rear seal may be opened prior to the nib breaking the front seal to form a vent between the cartridge and the body member. The seal assembly may include a spring member and a body member, with the spring member biasing the body member closed when the nib is in the retracted position. The body member may include an arcuate gate through which a slit is formed.
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Report PCT/US2004/018335 Jun. 21, 2005.
Avery Dennison Corporation
Ingrassia Fisher & Lorenz P.C.
Walczak David J.
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