|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/514 ; 137/527.4 ; 137/527|
|§371/§102 date||19960913 (19960913)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 9 인용 특허 : 4|
The invention has its object to radically resolve an untapped technical issue in a non-water hammering check valve device, in which a valve disc, a valve seat and a surrounding flow passage are configured such that the valve disc is substantially seated on the valve seat at the time when input to a pump is shut off and a discharge flow in the flow passage loses inertia to stop, and to provide a reasonable non-water hammering check valve device of a simple and clear construction which suffers a small resistance loss of a valve at the time of a predetermin...
[ We claim:] [1.] A composite action type water-hammer-preventive check valve, comprising:a valve casing having therein a flow passage with a flow line along which a fluid flows;a valve seat disposed across said flow line in an inclined attitude relative to the flow line so that the valve seat has an upstream lateral side positioned upstream of a downstream lateral side with respect to said flow line;an arm member in said valve casing at a position downstream from said valve seat and pivotably connected to said valve casing by an arm member support shaft...