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1. 发明授权

US4545400A Pressure relieving device 失效
标题翻译：减压装置
公开(公告)号：US4545400A
公开(公告)日：1985-10-08
申请号：US488242
申请日：1983-04-21
申请人： Arthur W. Gruber , Loren C. Smith
发明人： Arthur W. Gruber , Loren C. Smith
IPC分类号： F16K17/02 , F16K17/00
CPC分类号： F16K17/02 , Y10T137/7734 , Y10T137/7896
摘要： A pressure relieving device for use with gas flowmeters, pressure regulators and other fluid flow equipment is described. The device includes an O-ring and means for compressing and retaining the O-ring to provide a fluid-tight seal under normal operating pressure, but having a gap positioned such that the occurrence of an excessive pressure causes a portion of the O-ring to move into and through the gap to relieve the excessive pressure. A passage for enabling the fluid to contact the O-ring is sized to allow sufficient flow to relieve a fluid pressure substantially in excess of the normal operating pressure.
摘要翻译：描述了一种用于气体流量计，压力调节器和其它流体流动设备的减压装置。该装置包括O形环以及用于压缩和保持O形环以在正常工作压力下提供流体密封的装置，但是具有间隙，使得过大压力的出现导致O形环的一部分进入和通过差距，以减轻过度的压力。用于使流体接触O形环的通道的尺寸设置成允许足够的流动以减轻基本上超过正常操作压力的流体压力。

2. 发明授权

US06240943B1 Method and apparatus for maintaining a constant ratio of gases in a mixture subject to steady state and intermittent flow conditions 失效
标题翻译：用于在经受稳态和间歇流动条件的混合物中维持恒定气体比例的方法和装置
公开(公告)号：US06240943B1
公开(公告)日：2001-06-05
申请号：US09313896
申请日：1999-05-18
申请人： Loren C. Smith
发明人： Loren C. Smith
IPC分类号： F16K1110
CPC分类号： B01F3/028 , B01F15/00162 , B01F15/026 , B01F15/0292 , G05D11/02 , Y10T137/0318 , Y10T137/7783 , Y10T137/7836 , Y10T137/87684 , Y10T137/87917
摘要： The present invention reveals a gas mixing device which maintains constant gas ratios under both steady state and intermittent flow conditions, and reduces mixture errors inherent with multiple gauges by providing only one pressure gauge to read the inlet pressure at each inlet port. To accomplish its purpose, the device comprises a chamber defined by two opposing hollow core pistons, a downstream control valve, and an upstream delay valve. The control valve, assisted by one piston, opens and closes in response to the upper and lower operating pressure limits of a receiver. The delay valve, assisted by the other piston, closes after the control valve closes and opens abruptly only after a significant drop in pressure within the chamber, the result of the control valve having suddenly opened wide. A single pressure measuring assembly, rotatably mounted to the gas mixing device, communicates with each inlet port.
摘要翻译：本发明揭示了一种气体混合装置，其在稳态和间歇流动条件下保持恒定的气体比，并且通过仅提供一个压力计来读取每个入口处的入口压力来减少多个量规固有的混合误差。为了实现其目的，该装置包括由两个相对的空心活塞，下游控制阀和上游延迟阀限定的室。由一个活塞辅助的控制阀响应于接收器的上下工作压力极限而打开和关闭。由另一个活塞辅助的延迟阀在控制阀关闭后闭合，只有在室内的压力显着下降后才突然打开，控制阀的结果突然变宽。可旋转地安装到气体混合装置的单个压力测量组件与每个入口连通。

3. 发明授权

US5507438A Fuel gas and oxygen mixer for cutting torches 失效
标题翻译：用于割炬的燃气和氧气搅拌器
公开(公告)号：US5507438A
公开(公告)日：1996-04-16
申请号：US287516
申请日：1994-08-08
申请人： Carolyn E. Thomas , David W. Gailey , Loren C. Smith
发明人： Carolyn E. Thomas , David W. Gailey , Loren C. Smith
IPC分类号： F23D14/42 , B05B7/12 , F23D11/40
CPC分类号： F23D14/42
摘要： A fuel gas and oxygen mixer for a gas torch comprises a tubular body having a mixing passage extending therethrough and having an upstream end connected to sources of a fuel gas and oxygen and a downstream end for delivering a mixture of the fuel gas and oxygen to a torch tip. The fuel gas is axially supplied to the upstream end of the mixer, and the oxygen flows along the outer surface of the body in the upstream direction from a point adjacent the downstream end of the body and then into the mixing passage through radial ports adjacent to the upstream end of the body. The counter flow of oxygen is through a passageway which provides for cooling of the mixer during normal operation of the torch and for the quenching of reversely flowing hot gases during a back fire.
摘要翻译：用于气体割炬的燃料气体和氧气混合器包括管状体，其具有延伸穿过其中的混合通道，并且具有连接到燃料气体和氧气的源的上游端以及用于将燃料气体和氧气的混合物输送到手电筒燃料气体被轴向地供应到混合器的上游端，并且氧气沿着主体的下游端的点沿上游方向沿着主体的外表面流动，然后通过与主体相邻的径向端口进入混合通道身体的上游端。氧气的逆流通过通道，其在火炬的正常操作期间提供混合器的冷却并且用于在后面的时候使反向流动的热气体的淬火。

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