Check valve
AssigneeZama Japan Kabushiki Kaisha
InventorHideki Sasaki
Life of this patent
Estimating the term…
Abstract
A check valve that can prevent sticking of a valve body and reliably perform an opening and closing action in a check vale having a simple structure and that does not use biasing means on the valve body. A check valve has support pieces of a valve body protruding in the valve body direction on a circular base seat forming an outflow window in the center inserted in a circular groove where a support member (retainer) is formed between an outflow opening and a valve seat and on an open edge of the outflow window formed in the center of the base seat, and the support pieces of the support member (retainer) that support the valve body have linear or planar support parts on the top portion for leveling at least in a radial direction of the base seat.
Claims15
A check valve comprising:
- a case body in which a cylindrically shaped valve seat with a cylindrically shaped inflow opening and outlet opening formed respectively on each end, having an inner diameter larger than the inflow opening;
- a valve body disposed and axially movable within the valve seat, the valve body having an outer diameter slightly smaller than the inner diameter of the valve seat;
- a support member disposed between the valve body and the outflow opening of the valve seat, the support member comprising a plurality of support pieces protruding toward the valve body, each of the plurality of support pieces extending in a non-radial direction of the support member.
A carburetor comprising:
- a body;
- a fuel passage positioned within the body;
- and
- a check valve positioned within the fuel passage, the check valve comprising:
- a case body having an inflow opening,
- an outflow opening larger than the inflow opening,
- a valve seat positioned between the inflow and outflow opening,
- a valve body larger than the inflow opening and movable between the valve seat and a support member,
- wherein the support member removably positioned between the valve seat and the outflow opening, and wherein each of the plurality of support pieces extending in a direction perpendicular to an axial direction of the support member.
Dependencies are inferred from the claim text.