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US 4,275,759 AGranted
Closure member
OwnerShih C. Huanginventor
Life of this patent
Estimating the term…
Abstract
A closure member comprises a casing having a plurality of stripe recesses as fluid passages, a valve seat inserted in said casing having a flange portion for sleeving a ring magnet and a high strength material adopted on the flange portion, a piston made of metal or magnetic material to be attracted by the ring magnet, an inner tube inserted in said casing having a central fluid passage, a plurality of supports for positioning the piston and a plurality of stripe protrusions coincident with the stripe recesses of the casing and a base cover attaching to the casing.
Claims5
A closure member comprising:
- a cylindrical casing having a plurality of stripe recesses formed on the inner surface thereof and a section of female threads formed on the lower portion of the inner surface thereof;
- a valve seat having a central passage, a male threads being formed on part of the outer surface thereof for engaging with said female threads on the casing and a flange portion projecting from the upper surface of the valve seat;
- a ring magnet sleeved on the flange portion of said valve seat;
- a piston movably positioned in the casing and biased toward said valve seat by the magnetic force of said ring magnet;
- an inner tube having a plurality of supports extending from the bottom surface thereof for positioning the piston and a plurality of stripe protrusions coincident with the stripe recesses in the casing;
- and
- a base cover for assembling the inner tube having a central openiing formed thereon.
4 more elements
Dependencies are inferred from the claim text.