公开(公告)号：US5890413A

公开(公告)日：1999-04-06

申请号：US780520

申请日：1997-01-08

申请人： Don Bayer ,  Herb Hoenisch ,  Robert D. Kern ,  Gerald C. Ruehlow ,  Wes Sodemann

发明人： Don Bayer ,  Herb Hoenisch ,  Robert D. Kern ,  Gerald C. Ruehlow ,  Wes Sodemann

IPC分类号： B23P11/02 ,  F04B1/12 ,  F04B53/16 ,  F01B3/00

CPC分类号： F04B53/164 ,  B23P11/025 ,  F04B1/124

摘要： Disclosed is a piston for a water pump, e.g., a pressure washer pump. The piston includes a piston body and a piston head and in the improvement, the piston body is solid, homogeneous ceramic. That is, the piston body has a generally cylindrical surface and the body is circumscribed by the surface and is homogeneous ceramic. A method for making a piston for a water pump includes the steps of providing a piston body made of a ceramic material, and making a piston head of steel and having a pocket formed therein. The head is heated, the pocket and the body are engaged in overlapping relationship and the head is allowed to cool and "shrink-fit" to the piston body. The piston head is formed to have a relief groove circumscribing the pocket for reducing compression forces resulting from such cooling.

摘要翻译： 公开了一种用于水泵的活塞，例如压力清洗泵。 活塞包括活塞体和活塞头，在改进中，活塞体是固体均匀的陶瓷。 也就是说，活塞体具有大致圆柱形的表面，并且主体被表面限定并且是均匀的陶瓷。 一种制造水泵活塞的方法，包括以下步骤：提供由陶瓷材料制成的活塞体，并制成钢制的活塞头，其中形成有凹穴。 头部被加热，口袋和主体以重叠的关系接合，头部被冷却并且“收缩配合”到活塞体上。 活塞头形成为具有围绕口袋的减压槽，以减少由于这种冷却产生的压缩力。