Methods and apparatus for splitting and directing a...

Details Methods and apparatus for splitting and directing a... Methods and apparatus for splitting and directing a...

2007-11-06

2007-11-06

Keasel, Eric (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625630, C137S625640

Reexamination Certificate

active

11002009

ABSTRACT:
A jet reflector servovalve includes a flexure tube and reflector that opposes a fluid nozzle and fluid receivers of the servovalve. During operation, the nozzle directs a pressurized fluid jet toward the reflector. The pressurized fluid travels within a second stage of the servovalve, toward the reflector. The reflector directs or reflects the fluid back toward the fluid receivers to adjust a position of a spool of the servovalve. The configuration of the reflector, the nozzle, and the receivers allows transmission of the pressurized fluid within the second stage of the servovalve and minimizes the necessity for multiple o-rings between the second stage of the servovalve and a torque motor of the servovalve, thereby reducing manufacturing costs of the servovalve.

REFERENCES:
patent: 2884907 (1959-05-01), Atchley
patent: 3081787 (1963-03-01), Meulendyk
patent: 3223103 (1965-12-01), Trinkler
patent: 3272077 (1966-09-01), Meulendyk et al.
patent: 3406701 (1968-10-01), Meulendyk
patent: 3542051 (1970-11-01), McFadden et al.
patent: 5303727 (1994-04-01), Wilson et al.
patent: 0 662 565 (1995-07-01), None
patent: 1 267 051 (1972-03-01), None
patent: WO 99/36720 (1999-07-01), None
“Jet Pipe Servovalves”, MOOG White Paper, pp. 1-20.
PCT International Search Report, mailed Jan. 29, 2007.
Written Opinion of the International Searching Authority, mailed Jan. 29, 2007.

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