专利名称：Pressure gauge 发明人：Billy Lynn Guy周易64卦
申请号：US05/617697凸面镜应用
白云山多高>如何分盘申请日：19750929
公开号：US04028936A
制服英语公开日：
19770614
专利内容由知识产权出版社提供歌曲列表
摘要：A pressure gauge for indicating the fluid pressure at a source of pressure such as a tire, for example, has a chamber formed within a body. When the body is dispod on a tire valve stem, for example, a portion of the body depress a valve core plunger of the valve stem to enable the pressurized fluid in the tire to flow through a longitudinal passage in the body and past a flap valve, which is an O-ring, into the chamber. This pressurized fluid in the chamber acts on a piston head of a piston, which is slidably dispod in a passage in the body communicating with the chamber, to move the piston against the force of a spring within the body passage. An O-ring is mounted in the piston head to al the body passage. The O-ring acts as an indicator through cooperation with a scale on the body to indicate the pressure of the fluid in the chamber in the body; this is the same pressure as that in the tire since the tire is communicating with the chamber. When the body is removed from the tire valve stem, the flap valve prevents communication between the longitudinal passage and the chamber to retain the pressurized fluid within the chamber to hold the piston in the position to which it is moved. When the pressure has been read after removal from the tire valve stem, a flap valve, which is part of the same O-ring controlling the communication of the pressurized fluid into the chamber, is opened to vent the chamber to the atmosphere. The O-ring has
portions diametrically dispod functioning as the flap valves to control the flow of fluid into and out of the chamber.对联笑话
申请人：GUY; BILLY LYNN
代理人：Frank C. Leach, Jr.
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