Multi-stage fluid flow control device

Details Multi-stage fluid flow control device Multi-stage fluid flow control device

1994-06-30

1995-10-17

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

138 89, F16L 5510

Patent

active

054581494

ABSTRACT:
A fluid flow control device is defined by a plurality of flow control sta mounted on a rod. Each of the flow control stages includes a support brace providing sliding support of the rod, an end plate fixably mounted on the rod, and an elastomeric element mounted on the rod between the support brace and the end plate. The elastomeric element defines an annular cavity around an inside perimeter of the tube. The elastomeric element expands between the end plate and support brace in accordance with axial movement of the rod in order to adjust the size of the annular cavity.

REFERENCES:
patent: 1966819 (1934-07-01), Irvin
patent: 1993307 (1935-03-01), Nicholson
patent: 4506706 (1985-03-01), Sandmann
patent: 4625765 (1986-12-01), O'Donnell
patent: 4723578 (1988-02-01), Modarski
patent: 4886939 (1989-12-01), Kinnan
patent: 4982764 (1991-01-01), Saxon
patent: 5224516 (1993-07-01), McGovern et al.

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