×

Spring assembly for floating seat ring

  • US 4,266,566 A
  • Filed: 07/26/1979
  • Issued: 05/12/1981
  • Est. Priority Date: 11/13/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. In a valve including a valve body having inlet and outlet flow passages communicating with a valve chamber, a valve member mounted in said valve chamber for movement between open and closed positions relative to the flow passages, an annular shoulder at the juncture of each flow passage with the valve chamber, and a seat ring mounted about each flow passage and having an annular rear face in opposed spaced relation to the associated shoulder to provide a spring pocket therebetween, the improvement comprising:

  • an annular spring assembly in the spring pocket between said rear face and said shoulder adapted to urge the seat ring toward the valve member, said spring assembly including at least a pair of contiguous undulated annular wave springs about the seat ring each wave spring having a plurality of rear and front nodes, the rear nodes on the rearmost wave spring being in contact with said shoulder and the front nodes on the foremost wave spring being in contact with said rear face, said pair of contiguous wave springs being staggered with the front nodes of one wave spring of said pair in opposed contact relation to the rear nodes of the other wave spring of said pair, and means to maintain each pair of wave springs in such staggered position.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×