Geoffrey J Scott

US Patent:

20040051067, Mar 18, 2004

Filed:

Sep 12, 2002

Appl. No.:

10/241988

Inventors:

Mahoro Fujita - Fairport NY, US
Todd Geib - Fairport NY, US
Geoffrey Scott - Fairport NY, US
Mark Reeves - Hamlin NY, US

International Classification:

F16K031/02

US Classification:

251/129150

Abstract:

In a solenoid-actuated pintle valve assembly, the solenoid assembly is shrouded by a manifold jacket connected via an opening to a source of air at a pressure higher than the working gas pressure within the valve chamber. During operation of the valve and solenoid assembly, a low mass flow of air is forced continuously throughout the solenoid assembly and exits through any leaks in the jacket and along the bushing bores into the valve chamber. Thus, the bushing bore and solenoid assembly are actively protected against entry of contaminants. Further, since it is no longer necessary to vent the valve to permit the escape of gases leaking along the bushing bores, contaminant-laden gases are kept from being exhausted into the engine compartment and from leaving a carbon track residue. The invention is especially useful for exhaust gas recirculation valves on internal combustion engines.

US Patent:

20230059308, Feb 23, 2023

Filed:

Aug 20, 2021

Appl. No.:

17/407292

Inventors:

- St. Michael, BB
Cheng YANG - Shanghai, CN
Geoffrey J. SCOTT - Fairport NY, US

International Classification:

F02M 61/18
F02M 61/04

Abstract:

A director plate retainer of a fluid injector includes an outer wall which is annular in shape and which extends from an outer wall first end to an outer wall second end and which is centered about an axis. The director plate retainer also includes a lateral wall which is annular in shape and which extends toward the axis from a radially outer extent, which is proximal to the outer wall, to a radially inner extent, which is distal from the outer wall. The director plate retainer also includes an inner wall which is annular in shape and which extends from an inner wall first end, which is proximal to the lateral wall, to an inner wall second end, which is distal from the lateral wall, the inner wall extending along the axis in a direction that is opposite from the outer wall.