Parker-hannifin Corporation

Jonathan M Golightly

Robert R Pelletier

Peter J Stroempl

Dieter Ehrke

Oliver Neiske

Thomas G Johnson

Andrew Eric Mau

John M Obeidin

Antony William Newman

A threaded coupling assembly include a union (), a tube end (), and a coupling nut (). A pair of telescoping indicator rings (), a radially outer ring and a radially inner ring, are respectively connected to the union and the nut. The inner ring has a first visual characteristic contrasting with a second visual characteristic of the inner ring. The outer ring has a third visual characteristic contrasting with the second visual characteristic of the inner ring. The first visual characteristic is aligned with and viewable through the window () of the outer ring when the threaded coupling assembly is in the fully assembled state, and the first visual characteristic is out of alignment with the window when the threaded coupling assembly is not in the fully assembled state. The assembly may utilize tapered threads and have one or more features for self-alignment and/or sealability.

Threaded coupling assemblies for interconnecting fluid-carrying conduits

Provided is a flexible hose assembly having an inner nipple coupled to an inner flexible hose and an outer nipple at least partially surrounding the inner nipple and being coupled to an outer flexible hose, wherein a first fluid flowing through the inner nipple is directed outward in-between the inner and outer flexible hoses and a second fluid flowing in-between the inner and outer nipples is directed inward to the inner flexible hose. By directing the second fluid inward and the first flow outward, the outer flexible hose is prevented from collapsing on the inner flexible hose when pressure of the second fluid flowing through the inner flexible hose is greater than a pressure of the first fluid flowing through the outer flexible hose.

Concentric flexible hose assembly

Growing community of inventors

Fort Worth, TX, United States of America

Jonathan M Golightly