[특허]Automatic vent valve

Automatic vent valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-015/02
출원번호	US-0559636 (1983-12-12)
발명자 / 주소	Hauser, Hugo
출원인 / 주소	Tritec Industries, Inc.
대리인 / 주소	Schatzel, Thomas E.
인용정보	피인용 횟수 : 33 인용 특허 : 0

초록 ▼

An automatic vent valve having a stoppage member within a flow chamber located between an inlet chamber and vent chamber with said stoppage member being biased against a lower seat. The stoppage member moves between said lower seat and an upper seat in response to pressure changes associated with the operation of a positive displacement pump which either overcomes said biasing means or allows said biasing means to function. During the movement of the stoppage member between the upper and lower seats a flow path exists between the inlet chamber and vent chamber such that gases and/or fluid are vented on each stroke of the pump.

대표청구항 ▼

1. An automatic vent valve for use in combination with a positive displacement pump comprising: a body for the vent valve; an inlet chamber formed through the body for communication with the discharge of a positive displacement pump; an outlet channel connected in direct flow communication with the inlet chamber through the body; a vent chamber formed in the body; a flow channel extending in the body from said inlet chamber to said vent chamber; a stoppage member, which is a cylinder and has an internal space formed about the axis of said cylinder and opening upward, slidably mounted intermediate said inlet and vent chambers in said flow channel; an upper stoppage member seat; a lower stoppage member seat; a means seated in said internal space for biasing said stoppage member onto said lower seat in a position which prevents flow from said inlet chamber into said flow channel; whereby said biasing means can be overcome by pressure within said inlet chamber such that, during the period that said stoppage member moves from said lower seat to said upper seat where flow is blocked from said flow channel into said vent chamber, flow is permitted between said inlet chamber through said flow channel into said vent chamber and such that, during the period of removal of such pressure, said stoppage member moves from said upper seat to said lower seat and flow is permitted between said inlet chamber through said flow channel into said vent chamber. 2. An automatic vent valve comprising: an inlet chamber in communication with the discharge of a positive displacement pump; a vent chamber; a flow channel extending from said inlet chamber to said vent chamber; a cylindrical stoppage member slidably mounted intermediate said inlet and vent chambers in said flow channel; an upper stoppage member seat; a lower stoppage member seat; a flow channel sleeve, which is substantially a hollow cylinder adapted to include said lower stoppage member seat, located in the flow channel and surrounding the cylindrical stoppage member; and a means for biasing said stoppage member onto said lower stoppage member seat in a position which prevents flow from said inlet chamber into said flow channel; said biasing means exerting a force which can be overcome by pressure within said inlet chamber such that said stoppage member moves from said lower seat to said upper seat where flow is blocked from said flow channel into said vent chamber during which movement flow is permitted between said inlet chamber through said flow channel into said vent chamber and upon removal of such pressure said stoppage member moves, by the force of said biasing means, from said upper seat to said lower seat during which movement flow is permitted between said inlet chamber through said flow channel into said vent chamber. 3. The vent valve of claim 2, wherein said flow channel sleeve and said stoppage member are constructed of a thermal plastic material. 4. An automatic vent valve comprising: an inlet chamber in communication with the discharge of a positive displacement pump; a vent chamber; a flow channel extending from said inlet chamber to said vent chamber; a stoppage member which is a cylinder having a concave bottom and which has an internal space formed about the axis of said cylinder and opening upward, slidably mounted intermediate said inlet and vent chambers in said flow channel; an upper stoppage member seat; a lower stoppage member seat; a means seated in said internal space for biasing said stoppage member onto said lower seat in a position which prevents flow from said inlet chamber into said flow channel; whereby, said biasing means can be overcome by pressure within said inlet chamber such that, during the period that said stoppage member moves from said lower seat to said upper seat where flow is blocked from said flow channel into said vent chamber, flow is permitted between said inlet chamber through said flow channel into said vent chamber and such that, during the period of removal of such pressure, said stoppage member moves from said upper seat to said lower seat and flow is permitted between said inlet chamber through said flow channel into said vent chamber. 5. The vent valve of claim 4, wherein said means for biasing comprises a helical compression spring. 6. The vent valve of claim 4, wherein said vent chamber is connected to a conduit out of said valve. 7. The vent valve of claim 4, wherein said movement of said stoppage member is approximately 15 mils in length.

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