Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-04-28
1994-11-29
Cummings, Scott W.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277105, 277 35, 222368, F16J 1518, G01F 1100
Patent
active
053683110
ABSTRACT:
A rotary valve which is particularly useful in handling foodstuff or materials which will not tolerate cross-batch contamination, the valve including a housing having an inlet and an outlet which may be connected to a pneumatic conveying duct or the like, and having an access open end, a detachable closure means mounted on the housing for closing the opening and, a drive shaft journalled in the housing having a free end disposed between said inlet and outlet, adjacent the closure, a rotor mounted on the free end of the shaft having an annular surface engageable with the housing, the annular surface having at least one recess communicable with the inlet and outlet by rotating the drive shaft for conveying material from the inlet to the outlet, a first axial seal disposed between the housing and the rotor, and a second axial seal disposed between the rotor and the closure in substantial longitudinal alignment with the first axial seal.
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