Patent ID: 11873846
Assignee: HAMILTON SUNDSTRAND CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  G | IPC F

Claim 0:
1. A pressure regulating valve for use in a fluid flow system, the pressure regulating valve comprising:
a housing including an inlet and an outlet, wherein the inlet is fluidly coupled to a first fluid channel, and wherein the outlet is fluidly coupled to a second fluid channel;
a sleeve positioned within the housing, the sleeve comprising a first conduit and a second conduit;
a cap coupled to a first end of the housing, wherein the cap extends partially within and partially outside of the housing;
a plurality of shims positioned within the cap and axially aligned with a central axis of the cap;
a spring positioned at least partially within the cap and axially aligned with the central axis of the cap, wherein the spring abuts one of the plurality of shims at a first distal end of the spring; and
a spring seat positioned at least partially within the sleeve, wherein the spring seat is configured to abut a second distal end of the spring on a first side of the spring seat and abut a pin on a second side of the spring seat, wherein the pin extends between the spring seat and a spool slidingly positioned within the sleeve,
wherein the spool comprises:
an internal cavity positioned within an outer wall of the spool and formed by the outer wall of the spool;
a first regulating window fluidly coupling the internal cavity of the spool and the first conduit of the sleeve;
a second regulating window fluidly coupling the internal cavity of the spool to a drain conduit; and
a spool outlet fluidly coupling the internal cavity of the spool and the second conduit of the sleeve.