Pneumatic device having a selectively variable orifice

Details Pneumatic device having a selectively variable orifice Pneumatic device having a selectively variable orifice

2007-04-10

2007-04-10

Jacyna, J. Casimer (Department: 3754)

Valves and valve actuation

With selective flow regulation

Different sized bores in valve head

Reexamination Certificate

active

10906374

ABSTRACT:
A pneumatic device having a selectively variable pneumatic output comprises an inlet connectable to an air source and an outlet disposed in a flow path, a control assembly in the flow path and having a plurality of differently sized primary orifi. The control assembly includes a selector having a secondary orifice, the selector moveable relative to the primary orifi between a plurality of positions, the primary orifi and the secondary orifice arrangeable relative to one another to permit the secondary orifice to be in flow communication with a selected one of the primary orifi. The control assembly further blocks the remaining primary orifi when the secondary orifice is aligned with the selected one of the primary orifi.

REFERENCES:
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patent: 5246201 (1993-09-01), Messick
patent: 5417083 (1995-05-01), Eber
patent: 6726174 (2004-04-01), Bareis et al.
patent: 2003/0155017 (2003-08-01), Rogalski et al.
patent: 19807503 (1999-08-01), None
patent: 19821648 (1999-11-01), None
International Search Report received in International (PCT) Application PCT/US2006/000066, by the European Patent Office, dated May 16, 2006.
Written Opinion for Appplication PCT/US2006/000066 by the European Patent Office, dated May 16, 2006.

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