Non-contact valve for particulate material

Details Non-contact valve for particulate material Non-contact valve for particulate material

2007-01-02

2007-01-02

Look, Edward K. (Department: 3751)

Valves and valve actuation

Valve

Seats

C141S070000, C406S128000

Reexamination Certificate

active

11011820

ABSTRACT:
A non-contact valve (24, 26) for controlling the flow of particulate material (M) includes a body (102) and a gas-porous element (106) associated with the body (102). A first orifice (122) is defined by the gas-porous element (106). The gas-porous element (106) directs a flow of pressurized gas into the first orifice (122). A plug member (104) receivable within the first orifice (122) is movable into and out of the first orifice (122). A channel (C) is conjunctively defined at least in part by the first orifice (122) and the plug (104). The channel (C) defines a flow path (124) for the particulate material (M). The length of the channel (C) is adjusted to thereby adjust the velocity of gas flowing through the channel (C) and, thereby, adjust the flow of material (M) therethrough.

REFERENCES:
patent: 5727607 (1998-03-01), Ichikawa et al.
patent: 6311745 (2001-11-01), Welch et al.
patent: 6467943 (2002-10-01), Maguire
patent: 6609871 (2003-08-01), Pfeiffer et al.

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