Suction valve

• US 20050000571A1
• Filed: 01/26/2004
• Published: 01/06/2005
• Est. Priority Date: 04/03/2002
• Status: Active Grant

• Current Assignee: Gardner Denver Incorporated
• Original Assignee: Gardner Denver Incorporated
• Inventors: Vicars, Berton L.
• Granted Patent: US 7,172,175 B2
• Time in Patent Office: Days
• US Class Current: 137/541
• CPC Class Codes: F16K 15/063 the valve being loaded by a spring
• CPC Class Codes: F16K 17/04 spring-loaded
• CPC Class Codes: F16K 2200/3053 Helicoidal springs of variable pitch, diameter or spring rate
• CPC Class Codes: Y10T 137/7868 Resilient gasket
• CPC Class Codes: Y10T 137/7931 Spring in inlet
• CPC Class Codes: Y10T 137/7932 Valve stem extends through fixed spring abutment
• CPC Class Codes: Y10T 137/7933 Yoke or cage-type support for valve stem

Abstract

A suction valve including a valve seat and a piston movably joined to the valve seat. The piston has a head for engaging the top surface of the valve seat and a stem extending downwardly from the head through the valve seat. A valve guide is positioned adjacent the bottom surface of the valve seat and slidably receives the stem. A valve keeper is fitted upon the stem such that the valve guide is disposed between the valve seat and the valve keeper. A keeper pin is slidably positioned within a transverse aperture in the stem and abuts the bottom of the valve keeper. A compressed spring is positioned between, and exerts opposing forces upon, the valve guide and the valve keeper so as to normally retain the head of the piston in engagement with the top surface of the valve seat.

Claims

1. A suction valve, comprising:

a valve seat being a tube with open, top and bottom surfaces;

a piston having a head for engaging said top surface of said valve seat and a stem extending downwardly from said head through said valve seat, said stem having a transverse aperture;

a valve guide being positioned adjacent said bottom surface of said valve seat and slidably receiving said stem;

a valve keeper being fitted upon said stem such that said valve guide is disposed between said valve seat and said valve keeper;

an abutment being positioned within said transverse aperture and abutting the bottom of said valve keeper; and

,

a resilient member positioned between, and exerting opposing forces upon, said valve guide and said valve keeper so as to normally retain said head in engagement with said top surface of said valve seat.