Patent ID: 6416085
Filing Date: 2002-07-09
Classification: F16L

Abstract:
A fluid pressure hose coupling for connecting a flexible hose to a pressurized fluid line, said coupling having a body with a through bore, connecting means for securing said body to a pressurized line, said coupling having a cylindrical nipple end section having a circumferentially smooth tapered outer surface having a larger outer diameter section at a free end thereof, said larger outer diameter being greater than an inner diameter of a flexible hose to be disposed thereover, said free end having an inwardly tapered circumferential front end wall adapted to assist a hose end inner wall section to be slid over said nipple end section, said coupling body having a circumferential channel in said body disposed concentrically about said nipple rearwardly thereof, said channel having an open end facing said nipple end section and disposed above said larger outer diameter section, a cylindrical hose clamping sleeve having a cylindrical piston end and an opposed inwardly tapered inner clamping surface whose diameter is larger at a front end thereof, said inner surface being parallel to said nipple end section outer surface, a flexible O-ring disposed in said channel adjacent an end wall of said channel, conduit means interconnecting a rear portion of said channel to said through bore and communicating between said end wall and said O-ring; said cylindrical piston end when disposed in said channel against said O-ring forming a hose end receiving gap between said tapered inner surface of said clamping sleeve and said tapered outer surface of said nipple end section to receive an end section of a flexible hose slid over said nipple end section and into said compression gap whereupon when fluid pressure is applied to said line, pressure will act upon said O-ring through said conduit means and against said cylindrical piston end, urging said clamping sleeve together with said hose end section outwardly and causing said hose end section to be compressed between said tapered inner surface of said clamping sleeve and said larger outer diameter section at a free end of said tapered outer surface of said nipple end section which move closer together to diminish said gap a distance less than the thickness of said hose.