Pressurized pen

Details Pressurized pen Pressurized pen

2008-06-30

2010-10-26

Huson, Gregory L (Department: 3751)

Coating implements with material supply

Including means to apply material-moving force

By compression or suction of gas in reservoir

C401S101000, C401S18800A

Reexamination Certificate

active

07819601

ABSTRACT:
Provided is a pressurized pen, which is enabled to enhance the sealing property of a compression chamber at a pressurizing time in the knocking operation of a knock mechanism and to improve the durability. A pressuring pump mechanism includes: a pressure member having a front end opening portion communicating with the inside of a medium containing tube and a compression chamber made extensible and contractible in axial direction; and a push member for coming in axial direction into and out of abutment against a rear end opening portion of the pressure member and for pushing the compression chamber of the pressure member in a gas-tight condition in a compressing direction. The push member is associated with the pushing action of a knock mechanism such that it is enabled to irrotationally move toward the rear end opening portion of the pressure member.

REFERENCES:
patent: 2560810 (1951-07-01), Morris
patent: 3285228 (1966-11-01), Fisher
patent: 3516754 (1970-06-01), Blanchard
patent: 7128491 (2006-10-01), Kobayashi
patent: 7303349 (2007-12-01), Murakoshi
patent: 2008/0019761 (2008-01-01), Taniguchi
European Search Report dated Nov. 16, 2007.

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