公开(公告)号：US4542373A

公开(公告)日：1985-09-17

申请号：US531090

申请日：1983-09-12

申请人： Edward E. Hillock

发明人： Edward E. Hillock

IPC分类号： B63B13/02 ,  G08B21/00

CPC分类号： B63B13/02 ,  B63B2201/26

摘要： A small craft plug detector indicates whether a drain plug of a small boat or craft is installed. In a first embodiment a hollow cylindrical housing has upper and lower ends with central openings therethrough. An indicating plunger disposed within the housing has a rod which extends upwardly through the hole in the upper end of the housing and a lower end which extends downwardly through the opening in the lower end of the housing. A spring biases the plunger in an upward direction. Electrical contacts are provided so that an electrical connection may be made to activate a lamp, alarm, or the like when the plunger is moved downwardly. A second embodiment utilizes the electrical contacts of the first embodiment, but has no central opening in the upper end of the housing, and the plunger has no rod portion extending therethrough. A third embodiment of the invention is similar to the first embodiment, but does not include the electrical contacts.

摘要翻译： 小型工艺插头检测器指示是否安装了小型船只或工艺的排水塞。 在第一实施例中，中空圆柱形壳体具有穿过其中部开口的上端和下端。 设置在壳体内的指示柱塞具有向上延伸穿过壳体上端的孔的杆和向下延伸穿过壳体下端的开口的下端。 弹簧在向上的方向上偏压柱塞。 提供电触点，使得当柱塞向下移动时，可以进行电连接以激活灯，警报器等。 第二实施例利用第一实施例的电触点，但是在壳体的上端没有中心开口，并且柱塞没有延伸穿过其中的杆部分。 本发明的第三实施例类似于第一实施例，但不包括电触点。