Abstract: A liquid exhaust valve gear includes a housing divided into an upper chamber and a lower chamber by being partitioned by a partition plate having an opening portion, and a float slidably contained at inside of the lower chamber and moved up by receiving liquid inside of the hermetically sealed vessel. An upper end portion of the float is provided with valve means for closing the opening portion of the partition plate in accordance with moving up the float, further, a partition wall in a cylindrical shape is provided to extend in an upper direction from a peripheral edge of the opening portion at inside of the upper chamber, the partition wall is opposed to an opening of an exhaust port, and a notched portion which is not opposed to the opening of the exhaust port.

Abstract: In a method for manufacturing a float valve apparatus including a valve case, an upper lid incorporated into this valve case to form a valve chamber, and a float valve liftably arranged inside the valve chamber, the upper lid being provided with a lead-out pipe connected to piping of the outside, an exhaust hole which communicates with this lead-out pipe and is opened in an inner surface of the upper lid, and a seal cap which is mounted so as to enclose this exhaust hole and forms a valve seat on which the float valve abuts, the seal cap is welded to an inner surface of the upper lid by spin welding.

Abstract: A fuel check valve that includes: a pipe having a fuel outflow port; a valve element attached in an openable and closable manner to the fuel outflow port of the pipe, the valve element being normally urged by a spring in a closing direction; a support shaft disposed on one of the pipe and the valve element while a basal end portion thereof is fixed and a tip end portion thereof is made free, the support shaft functioning as a swing fulcrum for the valve element; and a bearing portion disposed on another one of the pipe and the valve element to swingably support the support shaft, the bearing portion including: a receiving hole into which the tip end portion of the support shaft is inserted; and an engaging groove with which a basal portion side of the support shaft is engaged.

Abstract: A liquid exhaust valve gear provided at an upper space at inside of a hermetically sealed vessel for containing a liquid for making a gas flow in and out to and from outside, and shutting off a leakage of the liquid from the hermetically sealed vessel, including a housing divided into an upper chamber and a lower chamber by being partitioned by a partition plate having an opening portion, and a float slidably contained at inside of the lower chamber and moved up by receiving a buoyancy from the liquid at inside of the hermetically sealed vessel, in which the upper chamber is opened with an exhaust port communicating with outside of the hermetically sealed vessel at a peripheral wall thereof, and an upper end portion of the float is provided with valve means for closing the opening portion of the partition plate in accordance with moving up the float, further, a partition wall in a cylindrical shape is provided to extend in an upper direction from a peripheral edge of the opening portion at inside of the upper

Abstract: A fuel check valve that includes: a pipe having a fuel outflow port; a valve element attached in an openable and closable manner to the fuel outflow port of the pipe, the valve element being normally urged by a spring in a closing direction; a support shaft disposed on one of the pipe and the valve element while a basal end portion thereof is fixed and a tip end portion thereof is made free, the support shaft functioning as a swing fulcrum for the valve element; and a bearing portion disposed on another one of the pipe and the valve element to swingably support the support shaft, the bearing portion including: a receiving hole into which the tip end portion of the support shaft is inserted; and an engaging groove with which a basal portion side of the support shaft is engaged.

Abstract: In a method for manufacturing a float valve apparatus including a valve case, an upper lid incorporated into this valve case to form a valve chamber, and a float valve liftably arranged inside the valve chamber, the upper lid being provided with a lead-out pipe connected to piping of the outside, an exhaust hole which communicates with this lead-out pipe and is opened in an inner surface of the upper lid, and a seal cap which is mounted so as to enclose this exhaust hole and forms a valve seat on which the float valve abuts, the seal cap is welded to an inner surface of the upper lid by spin welding.

Abstract: The first seal seat is disposed in a first passage of a case. The first float valve body is disposed in the case and closes the first seal seat in response to the liquid level of the fuel. The second seal seat is disposed vertically above the first seal seat, in a second passage of the case. The second valve body is disposed on one side of the second seal seat communicating to the outside of the second passage, with being resiliently urged upwards from below. The second float is disposed in the case and regulates an upper end position of the second valve body to open the second valve seat in response to movement of the liquid level of fuel at least until the liquid level is higher than the liquid level at which the first float valve body closes the first seal seat.

Abstract: The first seal seat is disposed in a first passage of a case. The first float valve body is disposed in the case and closes the first seal seat in response to the liquid level of the fuel. The second seal seat is disposed vertically above the first seal seat, in a second passage of the case. The second valve body is disposed on one side of the second seal seat communicating to the outside of the second passage, with being resiliently urged upwards from below. The second float is disposed in the case and regulates an upper end position of the second valve body to open the second valve seat in response to movement of the liquid level of fuel at least until the liquid level is higher than the liquid level at which the first float valve body closes the first seal seat.