초록 ▼

A flow control for controlling the rate of flow of a fluid through a flow passage over a range of varying line pressures resembles a Belleville washer and is molded from a thermoplastic elastomer having a hardness range from 40 Shore A to 50 Shore D. The control has a circumferential outer rim and a

A flow control for controlling the rate of flow of a fluid through a flow passage over a range of varying line pressures resembles a Belleville washer and is molded from a thermoplastic elastomer having a hardness range from 40 Shore A to 50 Shore D. The control has a circumferential outer rim and a dome-shaped contour within the rim which provides an apex, a concave downstream surface and a convex upstream surface, with the fluid flow passage extending through its apex. This flow control does not require interaction with a specifically designed seat but can simply be mounted across the flow passage which it is to control by retaining its rim portion upstream from the flow passage to be controlled.

대표청구항 ▼

A flow control for regulating the flow of liquid in one direction between two aligned upstream and downstream passages, comprising: (a) an annular member of elastomeric material having predetermined upstream and downstream sides, (b) said downstream side including a circumferential rim defining a pl

A flow control for regulating the flow of liquid in one direction between two aligned upstream and downstream passages, comprising: (a) an annular member of elastomeric material having predetermined upstream and downstream sides, (b) said downstream side including a circumferential rim defining a plane extending substantially radially of said member and surrounding an opening of relatively large flow area, (c) said downstream side of said member including an apex having a flow passage extending axially therethrough which is of predetermined substantially smaller normal flow area than said opening surrounded by said rim, (d) a bowl-shaped wall interconnecting said rim and said apex and having a convex upstream outer surface and a concave downstream inner surface cooperating to provide said member with a bowl-shaped contour in radial section, and (e) said wall being of substantially less thickness than the axial distance between said apex and said plane defined by said rim whereby fluid pressure applied against said upstream surface of said wall will result in deflection of said wall causing axial movement of said apex toward said plane and reduction of the flow area of said fluid flow passage through said apex.