Regulator insert with hydraulic damping in outlet

Details Regulator insert with hydraulic damping in outlet Regulator insert with hydraulic damping in outlet

2004-10-18

2008-03-18

Fox, John (Department: 3753)

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

C137S901000, C251S117000

Reexamination Certificate

active

07343928

ABSTRACT:
A regulator insert for valves includes inflow openings and a plurality of slot-shaped outflow openings extending in the axial direction of the insert and being, via a roller membrane, closable in response to the difference in pressure across the insert under the influence of a spring that seeks to keep the outflow openings open. The slot-shaped outflow openings have at least two different lengths, whereby complete closure of at least some of the outflow openings can take place only consecutively. At least one of the slot shaped outflow openings has such length that complete closure thereof by means of the roller membrane is not possible.

REFERENCES:
patent: 2059808 (1936-11-01), Robart et al.
patent: 2573680 (1951-11-01), Arnold
patent: 3574310 (1971-04-01), Souriau
patent: 3727623 (1973-04-01), Robbins
patent: 5178324 (1993-01-01), Moesby
patent: 90/01657 (1990-02-01), None
patent: 95/12082 (1995-05-01), None
patent: 03/036143 (2003-05-01), None

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