Suction valve

• US 7,172,175 B2
• Filed: 01/26/2004
• Issued: 02/06/2007
• Est. Priority Date: 04/03/2002
• Status: Expired due to Fees

• Current Assignee: Gardner Denver Incorporated
• Original Assignee: Gardner Denver Incorporated
• Inventors: Vicars, Berton L.
• Primary Examiner(s): LEE, KEVIN L
• Application Number:
  US10/764,902
• Publication Number:
  US 20050000571A1
• Time in Patent Office: 1,107 Days
• Field of Search: 137/541, 137/543, 137/542, 137/543.13, 137/516.25, 137/516.29, 251/322, 251/323, 251/324, 251/318
• US Class Current: 251/324
• 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 piston for a suction valve, composing:

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

said second aperture opens to said first aperture, both said first and second aperture are at a lower portion of said stem, said first aperature at a right angle to said second aperture.