Patent · US Active

Proportional hydraulic two-stage valve

US11473693B2 · kind B2 · utility

1Cited by

36References

26Claims

0Family size

Assignee

FEMA Corporation of Michigan · US

Inventors

Jason P. Idalski · Portage, US
Andrew Wayne Baker · Portage, US
Steven R. Pride, II · Lawton, US

Key dates

Filing date	Jun 26, 2020
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Jul 25, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/363
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve includes a solenoid with a chamber housing a pin that actuates when the solenoid is energized. The valve also includes a spool housed within a sleeve. The sleeve includes a supply section with a supply port in communication with a supply source and a tank section with a tank port in communication with a reservoir. The spool includes a body including a first passage receiving fluid from the supply source when an opening for the first passage aligns with the supply port. When the solenoid is energized and the opening for the first passage aligns with the supply port, fluid from the supply source (i) applies a force to the spool body in a direction of actuation by the pin and (ii) flows to a second passage within the valve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.