Inventor

WELKER ROBERT H

36 patents

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

WELKER ROBERT H

WELKER ENG

Automatic insertion device

Flow diffuser

Diaphragm regulator with removable diffuser

Method and apparatus for quieting turbulence in a gas flow line valve

Flow diffuser and valve

Method and apparatus for quieting turbulence in a gas flow line valve

Flow distribution method and apparatus reducing downstream turbulence

Sampler incorporating pressure balanced check valve

Fluid pump mechanism

Adjustable flow diffuser

Explosion-proof optical fiber connector for a light source

Probe insertion apparatus

Optical inspection apparatus

Apparatus for visual inspection of closed machinery

Volume analyzer for crude oil sampling system including bite checking apparatus

Free water volume analyzer

Sampler incorporating a purge system

Sampler apparatus

Sample collection apparatus

Power supply system for an optical inspection apparatus

Axial flow regulator improvements including restrictor

Reinforced plug for flow regulators

WELKER ROBERT H

Insertion regulator for pressurized pipelines

Sensor positioning apparatus

Liquid sample collection apparatus

High pressure pump

Flow regulator assembly

Dump valve

Resilient plug construction for a flow regulator incorporating stress limiting means

Constant velocity diffuser

Disc chart paper with reinforced separating edge

(unassigned)

Dual injector cylinder automatic insertion device for use with high pressure pipelines

Flow diffuser for redistributing stratified liquids in a pipeline

WALKER ENGINEERING COMPANY

Resilient chamber fluid sampler having vacuum breaker apparatus

LIBBEY OWENS FORD CO

Scored glass bracket breaking apparatus

WELKER INC

Newtonian thrust cowl array