Inventor

PIERIK RONALD J

US40 patents

⚠️ This page may combine multiple inventors who share the name “PIERIK RONALD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PIERIK RONALD J

DELPHI TECH INC

Method and apparatus for actuating a cam phaser

Low friction variable valve actuation device

Cam link variable valve mechanism

Cam rocker variable valve train device

Camshaft phaser having designated contact vane

Camshaft phaser having designated contact vane

Variable valve actuating mechanism having torsional lash control spring

Cam phaser hydraulic seal assembly

Actuator for variable valve mechanism

Ring gear variable valve train device

Camshaft phaser having an external bias spring

Pinless roller finger follower

Retention bolt for a cam phaser

Locking pin mechanism for a camshaft phaser

Variable valve actuating mechanism having a rotary hydraulic lash adjuster

Variable valve actuating mechanism having automatic lash adjustment means

Hydraulic actuator for variable valve mechanism

Mechanical lash adjuster apparatus for an engine cam

Linkless variable valve actuation mechanism

Frameless variable valve actuation mechanism

Partial internal guide for curved helical compression spring

Method and apparatus for actuating a cam phaser

Variable valve actuation mechanism having partial wrap bearings for output cams and frames

Extended duration cam lobe for variable valve actuation mechanism

Method and apparatus for setting valve lift within a cylinder

Offset variable valve actuation mechanism

Mechanical lash control apparatus for an engine cam

Crank gear variable valve actuating mechanism

Belt-driven variable valve actuating mechanism

Method and apparatus for adjusting the angular position of a collar on a shaft

Eccentric grooves for intersecting longitudinal fluid supply passages

GM GLOBAL TECH OPERATIONS INC

Positive crankcase ventilation system

Oil pump control systems and methods for noise minimization

GM GLOBAL TECH OPERATIONS LLC

System and method for controlling airflow through a ventilation system of an engine when cylinders of the engine are deactivated

Lubrication system thermostat, and method thereof

PIERIK RONALD J

Variable valve actuation system including an accumulator and a method for controlling the variable valve actuation system

System and method for calibrating a valve lift sensor and evaluating a valve lift sensor and a hydraulic valve actuator

GEN MOTORS CORP

Engine timing drive with fixed and variable phasing

UNIV BRITISH COLUMBIA

Intensifier-injector for gaseous fuel for positive displacement engines

TWOTHIRDS WATER INC

Fluid treatment apparatus and method of using same