Cartridge type check valve
AssigneeCaterpillar Tractor Co.
InventorHoward L. Johnson
Life of this patent
Estimating the term…
Abstract
A check valve comprises a housing defining a valve seat thereon and a valve member reciprocally mounted in the housing to normally engage the seat for blocking fluid flow therepast. Two pairs of split retaining members are mounted in axially spaced relationship on a stem of the valve member and are expanded axially thereon by a compression coil spring for biasing the valve member to its closed position. A stop member is secured on an end of the stem of the valve member to prevent movement of one pair of the retaining members therepast. A slot is formed axially through the stop member and extends partially in the stem of the valve member to expose an end of the spring.
Claims11
A valve comprising
- a housing defining a valve seat thereon,
- a valve member movably mounted in said housing and normally engaging said seat for blocking fluid flow therepast,
- stop means on said valve member,
- spring means mounted on said valve member for biasing said valve member into its normal engagement with said seat,
- semi-annular retaining means mounted on said valve member and disposed between said stop means and said spring means for retaining said spring means on said valve member, and
- slot means formed through said stop means and in said valve member to expose said spring means whereby insertion of a tool in said slot means will compress said spring means to facilitate installation or removal of said retaining means.
Dependencies are inferred from the claim text.