Flexible hose for a flowable material applicator

A heated flowable material applicator comprising:

• a) a source of heated flowable material;
• b) a dispenser for dispensing said heated flowable material;
• c) a hose having one end in fluid flow communication with said source of heated flowable material and its other end in fluid flow communication with said dispenser for facilitating passage of said heated flowable material from said source to said dispenser wherein said hose comprises:
• 1) an elongate tubular flexible and noncorrugated casing extending substantially the axial length of said hose;
• 2) an elongate flexible tubular conduit received within said casing;
• 3) a pair of fitting assemblies with one of said fitting assemblies fluidtightly coupled to said conduit at one end of said conduit and the other of said fitting assemblies fluidtightly coupled to said conduit at the other end of said conduit;
• 4) a section of flexible axially compressible and axially expandable tubing that slidably telescopically cooperates with said conduit such that i) said tubing and said conduit are generally coaxial, and ii) said tubing is slidably movable relative to said conduit;
• and
• 5) wherein said casing is immovably fixed at one end to one of said fitting assemblies and is immovably fixed at its other end to the other of said fitting assemblies;
• and
• d) a pump for urging heated flowable material through at least said conduit;
• e) a source of electrical current;
• f) an electric heating element electrically connected to said current source;
• g) wherein said electric heating element 1) is received between said casing and said conduit and 2) extends substantially the axial length of said conduit for heating flowable material within said conduit or said tubing.

A heated flowable material applicator comprising:

• a) a source of heated flowable material;
• b) a dispenser for dispensing heated flowable material from said source;
• c) a hose having one end in fluid flow communication with said source of heated flowable material and its other end in fluid flow communication with said dispenser for facilitating passage of said heated flowable material from said source to said dispenser wherein said hose comprises:
• 1) an elongate tubular flexible casing extending substantially the axial length of said hose;
• 2) an elongate flexible tubular conduit received within said casing;
• 3) a pair of fitting assemblies with one of said fitting assemblies fluidtightly coupled to said conduit at one end of said conduit and the other of said fitting assemblies fluidtightly coupled to said conduit at the other end of said conduit;
• 4) an elongate section of flexible and axially compressible tubing slidably telescopically received within said conduit such that said axially compressible tubing section can move relative to said conduit and wherein said axially compressible tubing section has an uncompressed length that is longer than the length of said conduit;
• and
• 5) wherein said casing is fixed at or adjacent one end to one of said fitting assemblies and fixed at or adjacent its other end to the other of said fitting assemblies;
• and
• d) a pump for urging said heated flowable material through one of said tubing section and said conduit to said dispenser.

A method of making a hose for a heated flowable material applicator comprising:

• a) providing a tubular flexible casing, a tubular conduit, a section of flexible metal tubing having a length longer than the conduit, and a pair of fittings, and a heating element comprised of at least two wires;
• b) engaging one of the fittings with one end of the conduit;
• c) urging the section of tubing slidably telescopically into the conduit and axially compressing the section of tubing until the section of tubing is completely received within the conduit;
• d) engaging the other of the fittings with the other end of the conduit;
• and
• e) disposing the heating element wires in contact with the conduit;
• and
• f) urging the conduit slidably telescopically into the casing.

A heated flexible hose for a flowable material applicator comprising:

• a) a pair of spaced apart fittings, a tubular flexible casing having one end attached to one of said fittings and its other end attached to the other one of said fittings;
• b) a tubular flexible conduit received inside said casing having one end in fluid flow communication with one of said fittings and its other end in fluid flow communication with the other one of said fittings;
• c) a section of axially compressible flexible and corrugated tubing received inside said casing, said corrugated tubing section slidably telescopically cooperating with said conduit such that 1) said corrugated tubing section and said conduit are generally coaxial, and 2) said corrugated tubing section is slidably movable relative to said conduit;
• d) wherein said corrugated tubing section has an uncompressed length that is longer than the length of said conduit and said corrugated tubing section is axially compressed to a length less than said uncompressed length when received inside said casing;
• and
• e) wherein a flowable material flows through said conduit.

A flexible hose for a heated flowable material applicator comprising:

• a) a pair of spaced apart swivel fitting assemblies with each one of said swivel fitting assemblies comprising a housing having a fitting extending outwardly from one end of said housing and a swivel disposed at the other end of said housing;
• b) an inner tubular flexible conduit having 1) one end operably coupled to one of said fitting assemblies adjacent said swivel of said one of said fitting assemblies and 2) its other end operably coupled to the other one of said fitting assemblies adjacent said swivel of said the other one of said fitting assemblies;
• c) a tubular flexible and noncorrugated outer casing 1) immovably fixed at or adjacent one end to said housing of one of said fitting assemblies and 2) immovably fixed at or adjacent its other end to said housing of the other one of said fitting assemblies;
• d) a heating element received inside said casing and in contact with said conduit for heating a flowable material disposed inside said conduit;
• e) a pair of spaced apart collars with 1) one of said collars i) disposed around a portion of said swivel for insulating said swivel, and ii) attached to said housing of one of said swivel fitting assemblies, and 2) the other one of said collars i) disposed around at least a portion of said swivel for insulating said swivel, and ii) attached to said housing of the other one of said swivel fitting assemblies;
• and
• f) wherein 1) said flexible conduit is disposed inside said outer casing, 2) said fitting of one of said swivel fittings extends outwardly from the hose, 3) said fitting of the other one of said swivel fittings extends outwardly from the hose, and 4) hose tension is transmitted between said swivel fitting assemblies through said casing.