Magnetically-coupled valve
AssigneeSames Technologies
InventorsDjamel Merabet, Eric Prus, Patrick Ballu
Life of this patent
Estimating the term…
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).
Claims15
Valve comprising:
- a body;
- a seat fixedly joined to the body;
- and a needle capable of resting in a sealed manner against said seat, said needle being disposed inside said body and being movaile relative to said body, the needle being coupled magnetically, through a sealed and non-magnetic partition, to an actuating device equipped with several magnets between which magnetic bodies are interposed, wherein said needle does not have magnets and is equipped with ribs formed from a magnetic material, wherein said needle is of unitary, one-piece construction, and has an external radial surface provided with qrooves between, and delimiting, said ribs, and wherein said needle further comprises non-magnetic filling material in said grooves.
Dependencies are inferred from the claim text.