Ball check valve

• US 20050121084A1
• Filed: 12/04/2003
• Published: 06/09/2005
• Est. Priority Date: 12/04/2003
• Status: Abandoned Application

• Current Assignee: Danfoss Flomatic Corporation
• Original Assignee: Danfoss Flomatic Corporation
• Inventors: Andersson, Bo
• Application Number:
  US10/727,732
• Publication Number:
  US 20050121084A1
• Time in Patent Office: Days
• US Class Current: 137/533.110
• CPC Class Codes: F16K 15/048 Ball features
• CPC Class Codes: Y10T 137/791 Ball valves

Abstract

A ball check valve comprises a housing having walls defining a fluid inlet, a fluid outlet, and a chamber communicating with the inlet and with the outlet. The ball check valve includes a spherical hollow ball housing a plurality of spherical shock absorbing members that stabilize the spherical hollow ball during operation of the valve. The spherical hollow ball moves between a first, flow impeding position adjacent the inlet and a second position spaced from the inlet laterally of a fluid passageway in the chamber.

Claims

1. A ball check valve comprising:

a housing having walls defining a fluid inlet, a fluid outlet, and a chamber communicating with the inlet and with the outlet, the chamber including a fluid passageway;

a spherical hollow ball in said chamber having a diametric cross-sectional area larger than the area of the inlet, said spherical hollow ball being movable between a first, flow impeding position adjacent the inlet and a second position spaced from the inlet to allow fluid to pass through the valve; and

a plurality of spherical shock absorbing members contained within said spherical hollow ball.

2. The ball check valve of claim 1, wherein the spherical shock absorbing members stabilize the spherical hollow ball while in transition between the first, flow impeding position and the second position.

3. The ball check valve of claim 1, wherein the plurality of spherical shock absorbing members are metallic.

4. The ball check valve of claim 1, wherein said spherical hollow ball is a metallic sphere enclosed by a coat of rubber or synthetic resin.

5. The ball check valve of claim 1, wherein the plurality of spherical shock absorbing members only partially fill said spherical hollow ball.

6. A spherical ball for use in ball check valves, said spherical ball defining a hollow with a plurality of spherical shock absorbing members disposed therein, wherein the plurality of spherical shock absorbing members stabilize the spherical hollow ball during operation of the ball check valve.