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1. 发明授权

US4475570A Anti-syphon freezeless water hydrant 失效
标题翻译：防虹吸无水消火栓
公开(公告)号：US4475570A
公开(公告)日：1984-10-09
申请号：US312139
申请日：1981-10-16
申请人： Daniel W. Pike , Phillip J. Crawley , John L. Marshall , Steve A. Martin
发明人： Daniel W. Pike , Phillip J. Crawley , John L. Marshall , Steve A. Martin
IPC分类号： E03B7/12 , E03B9/14 , E03C1/10 , F16K24/02
CPC分类号： E03B9/025 , E03B7/12 , E03B9/14 , E03C1/104 , E03C1/108 , F16K24/02 , Y10T137/3331 , Y10T137/698 , Y10T137/86678 , Y10T137/9464
摘要： A water hydrant is provided with a number of valves operable to eliminate freezing problems and to prevent backflow into potable water, thereby precluding the danger of contamination. Water and air valves operate in conjunction such that trapping of water in the hydrant is averted by the admission of air after each closing of the water valve. By a somewhat different arrangement in outlet spout valving, air is also admitted to the spout after each closing of the water valve or other reduction in water pressure, the spout valving having the additional feature of blocking backflow, all of which meets the anti-contamination requirements of the hydrant.
摘要翻译：消防栓设有多个可操作的阀，可以消除冷冻问题，防止回流进入饮用水，从而排除污染的危险。水和空气阀联合操作，使得在每个关闭水阀之后，通过吸入空气来避免消防栓中的水的捕获。通过在出口喷口阀门中有一些不同的布置，每次关闭水阀之后，空气也被允许进入喷口或其他水压降低，喷口阀具有阻止回流的附加特征，所有这些都符合抗污染消防栓的要求。

2. 发明授权

US4215850A Winch 失效
标题翻译：绞盘
公开(公告)号：US4215850A
公开(公告)日：1980-08-05
申请号：US958372
申请日：1978-11-07
申请人： Reinhold A. Haase , Norman D. Brockelsby , Daniel W. Pike
发明人： Reinhold A. Haase , Norman D. Brockelsby , Daniel W. Pike
IPC分类号： B66D1/14 , B66D1/60 , B66D3/00
CPC分类号： B66D1/60 , B66D1/14
摘要： A winch includes a direct current reversible motor operable to drive a gear train to wind or unwind cable from a drum and also includes first and second clutch mechanisms in the gear train that provide respectively (1) internal loading of the winch to prohibit undesirable unwinding of cable and (2) infinite clutch control between free wheeling operation and direct gear train drive of the winch. The first clutch mechanism is a sprag clutch which is operated against a brake load built into the winch. The second clutch mechanism includes clutch plates which are engaged proportional to the force of a thrust bearing controlled by a manually operated handle.
摘要翻译：绞车包括可直接驱动齿轮系以从滚筒卷绕或退绕电缆的直流可逆马达，并且还包括齿轮系中的第一和第二离合器机构，其分别提供（1）绞盘的内部装载以禁止不期望的解卷电缆和（2）自由轮操作和绞车直接齿轮系驱动之间的无限离合器控制。第一离合器机构是楔形离合器，其抵抗内置于绞盘中的制动负载操作。第二离合器机构包括与由手动操作的手柄控制的止推轴承的力成比例的离合器片。

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