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US 4,569,541 AGranted
Heavy duty hose coupling and method for manufacture of hose-coupling combination
AssigneeThe Goodyear Tire & Rubber Company
InventorGeorge W. Eisenzimmer
Life of this patent
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AssigneeThe Goodyear Tire & Rubber Company
InventorGeorge W. Eisenzimmer
Estimating the term…
The coupling has a stem and a ferrule. The stem is placed against an uncured hand-built steel cable reinforced hose. The steel reinforcement cable is spiraled onto a smaller diameter portion of the stem. The ferrule is then slid over the stem and over the reinforcing cable layers. Epoxy resin is injected through ports in the ferrule to embed the reinforcing cables and securely fix the hose structure to the stem and ferrule of the coupling. A cover is applied over the ferrule. The hose-coupling assembly is subjected to heat and pressure to cure the elastomeric portions of the hose and securely bond them to the surfaces of the coupling. The hose-coupling assembly is useful in very heavy duty applications where the assembly must withstand large end load strains when the hose is not under internal pressure, such as hose for use on a jetting sled.
A rigid two part coupling for flexible hose comprising a stem and a ferrule, said stem being of generally cylindrical shape and having a smooth circular bore therethrough, said stem having an outer surface composed of a larger outside diameter portion terminating in a larger diameter end and a smaller outside diameter portion terminating in a smaller diameter end containing an annular recess therein, said smaller diameter portion containing a series of lands and grooves in the outer surface thereof, said ferrule being of generally tubular shape having an inside diameter equal to the outside diameter of the larger diameter portion of the stem and having a length greater than the length of the smaller diameter portion of the stem, said ferrule being coaxially positioned around said stem to overlie the entire smaller diameter portion of the stem and to extend over a portion of the larger diameter portion of the stem.
A rigid coupling for hose having a stem and a ferrule, said stem having a hose engaging end and a nipple end, a coaxial stem bore therethrough, a ferrule engaging radial rib spaced axially away from the nipple end, an annular recess in the hose engaging end of said stem having a mean diameter slightly greater then said coaxial stem bore, said stem having a smaller outside diameter at the hose engaging end than at the nipple end, said ferrule having a stem engaging end, a tapered end, a coaxial bore extending therethrough, a coaxial counterbore extending from the tapered end terminating in a rib engaging shoulder which defines the maximum extent of the coaxial counterbore, said coaxial bore having a outside diameter substantially equal to the diameter of the nipple end of said stem, said coaxial counterbore having a diameter substantially equal to the outside diameter of said ferrule engaging radial rib of said stem, said ferrule being engaged with the stem by sliding the ferrule over the stem from the nipple end of the stem until said rib engaging shoulder contacts the ferrule engaging radial rib of said stem.
In combination, a reinforced hose and coupling assembly comprising:
A method of coupling a hose to a coupling, said hose having an innermost tube of elastomeric material, a plurality of textile plies, a plurality of reinforcing element layers and an outermost elastomeric cover, said coupling having a stem and a ferrule, said stem having a smaller diameter end and a larger diameter end, said smaller diameter end containing an annular recess therein, said method comprising the steps of:
Dependencies are inferred from the claim text.