Magnetically-coupled valve

Details Magnetically-coupled valve Magnetically-coupled valve

2004-03-26

2010-06-01

Shaver, Kevin P (Department: 3754)

Dispensing

Motor operated outlet element

C251S065000

Reexamination Certificate

active

07726524

ABSTRACT:
The invention relates to a valve (1), comprising a body (2), within which a needle (3) moves, which can rest with sealing against a seat (23), fixed to the body (2). The needle (3) is magnetically coupled to an actuator body (5), across a closed and a magnetic chamber (4) provided with several magnets (52) between which magnetic bodies (53) are interspersed. The needle (3) has no magnets and is provided with ribs (36) made from a magnetic material. According to the invention, an improved magnetic coupling may be achieved, whereby the thickness and the relative separation of the ribs (36) are largely equal to the thickness (e53) and the relative separation (l52) of the magnetic bodies (53).

REFERENCES:
patent: 2572692 (1951-10-01), Bottum
patent: 3348543 (1967-10-01), Stafford
patent: 4520961 (1985-06-01), Hueber
patent: 4635901 (1987-01-01), Pond
patent: 4881088 (1989-11-01), Fisher et al.
patent: 4940207 (1990-07-01), Katsuyama
patent: 5484133 (1996-01-01), Oliver
patent: 5942962 (1999-08-01), Gery
patent: 6092545 (2000-07-01), Bedore et al.
patent: 6161722 (2000-12-01), Niknezhad et al.
patent: 7004446 (2006-02-01), Petro et al.
patent: 0 997 676 (2000-05-01), None

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