Patent · US Active

Control screw

US11319843B2 · kind B2 · utility

0Cited by

1References

1Claims

0Family size

Assignee

DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA · LU

Inventors

Eric Bourniche · Villerupt, FR
Marc Cipriano · Russange, FR
Lucas Giambrone · Longwy, FR

Key dates

Filing date	Feb 28, 2019
Grant date	May 3, 2022
Priority date	—
Expiry date	Feb 28, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2250/02
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control screw for a camshaft phase shifter of an internal combustion engine extends along a longitudinal axis. The control screw includes a screw body. The control screw also includes a tubular spool assembly having a control valve assembly with at least three rigid rings and at least two valves. Each valve includes at least one vane connected to two flexible arms. The valve is connected to two consecutive rigid rings.

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