Refrigerant hose
AssigneeAeroquip Corporation
InventorScott Campbell
Life of this patent
Estimating the term…
Abstract
This device is a hose for air conditioning purposes that is a barrier hose. The hose comprises an innermost tube of a thermoplastic vulcanizate. The innermost tube of thermoplastic vulcanizate is coextruded with a flexible polyamide barrier material as a second tube. A backing of thermoset rubber is extruded or calendared over the polyamide barrier tube. A reinforcement layer follows which is then covered with an EPDM outer cover.
Claims15
A refrigerant transporting hose, which is a barrier hose comprising:
- an innermost tube formed of at least one thermoplastic vulcanizate;
- at least one barrier material positioned radially outwardly of the innermost tube formed of a polyamide material;
- at least one backing material positioned radially outwardly of the polyamide inner tube formed of a rubber material;
- a reinforcing layer positioned radially outwardly of the inner tube;
- and
- an outer cover positioned radially outwardly of the reinforcing layer made of a rubber material, wherein the innermost tube of the thermoplastic vulcanizate and polyamide barrier material are coextruded without the use of an adhesive.
A refrigerant transporting hose, which is a barrier hose comprising:
- an innermost tube formed of a thermoplastic vulcanizate of polypropylene and EPDM rubber;
- at least one inner tube positioned radially outwardly of the innermost tube formed of nylon 6 or nylon 12;
- at least one inner tube positioned radially outwardly of the polyamide inner tube formed of EPDM rubber;
- a reinforcing layer formed of polyester braid positioned radially outwardly of the rubber inner tube;
- and
- an outer cover positioned radially outwardly of the reinforcing layer made of EPDM rubber, wherein the innermost tube of the thermoplastic vulcanizate and inner tube of nylon are coextruded without the use of an adhesive.
A refrigerant transporting hose, which is both a barrier hose comprising:
- an innermost tube formed of a thermoplastic vulcanizate of polypropylene and EPDM rubber;
- at least one inner tube positioned radially outwardly of the innermost tube formed of nylon 6 or nylon 12;
- at least one inner tube position radially outwardly of the polyamide inner tube formed of bromobutyl rubber;
- a reinforcing layer formed of polyester braid positioned radially outwardly of the rubber inner tube;
- and
- an outer cover positioned radially outwardly of the reinforcing layer made of EPDM rubber, wherein the innermost tube of the thermoplastic vulcanizate and inner tube of nylon are coextruded without the use of an adhesive.
Dependencies are inferred from the claim text.