QUICK-ACTING VALVE FOR MEDICINE GASES Russian patent published in 2004 - IPC

FIELD: medicine.

SUBSTANCE: valve is designed for use in life-support systems of reanimation, intensive therapy, physiotherapy and aneaesthesiology departments. Valve has housing whose inner surface of section of axial displacement of holder with two rows of balls of locking-and-fixing device is made in form of two coaxial holes. The latter are series-interconnected by conical transfers from larger diameter hole to medium diameter hole, and from medium diameter hole to smaller diameter hole. Holder of locking-and-fixing device contains one row of balls of smaller diameter, and other row of balls of larger diameter. Row of small diameter balls interacts with surface of housing holes of smaller and medium diameters. Other row of balls interacts with surface of holes of medium and larger diameter. Nominal size of medium diameter hole differs from size of smaller and larger diameter holes by doubled value of difference in diameters of balls, respectively.

EFFECT: improved reliability, increased service life, simplified manufacture and facilitated assembly of valve.

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