Valve core
AssigneePacific Industrial Co., Ltd.
InventorMasahiko Yamamoto
Life of this patent
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Abstract
A valve core includes a generally cylindrical core body fixed in a core mounting hole formed in a counterpart member, the core body having an open end, a moving shaft extending through the core body so as to be directly driven, the shaft having an end, a pair of flanges formed on the end of the shaft, a generally annular sealing member held between the flanges so as to adhere closely to an inner circumferential edge of the open end of the core body or an inner circumferential face of the core mounting hole to close the core mounting hole, and a pair of engagement portions formed in either flange and the sealing member so as to be brought into a concavo-convex engagement with each other to limit deformation of the sealing member causing an increase in its diameter.
Claims12
A valve core comprising:
- a generally cylindrical core body fixed in a core mounting hole formed in a counterpart member, the core body having an open end;
- a moving shaft extending through the core body so as to be directly driven, the shaft having an end;
- a pair of flanges provided on the end of the shaft;
- a generally annular sealing member held between the flanges so as to adhere closely to an inner circumferential edge of the open end of the core body or an inner circumferential face of the core mounting hole to thereby close the core mounting hole;
- and
- a pair of engagement portions formed in either flange and the sealing member so as to be brought into a concavo-convex engagement with each other to limit deformation of the sealing member causing an increase in a diameter thereof.
Dependencies are inferred from the claim text.