Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
116 words
A heated nozzle system for maintaining a melt stream passing over a surface at an elevated temperature, said nozzle system comprising, in combination: a body having a sprue therein; a heated nozzle member in said sprue, said nozzle member consisting of a one piece integral assembly comprising a casing, a bore in said casing, an unsheathed electric heater within said bore, and heat transmitting electrical insulation material surrounding said heater compacted within said bore without air voids between said heater and said bore; a melt passage within said body arranged in direct heat transfer relation to said nozzle member; electrical insulation means closing said bore; and electric leads connecting said heater to a source of current.
Claim 2
Dependent Claim
116 words
A heated nozzle system for maintaining a melt stream passing over a surface at an elevated temperature, said nozzle system comprising, in combination: a body having a sprue therein; a heated nozzle member in said sprue, said nozzle member consisting of a one piece integral assembly comprising a casing, a bore in said casing, an unsheathed electric heater within said bore, and heat transmitting electrical insulation material surrounding said heater compacted within said bore without air voids between said heater and said bore; a melt passage within said body arranged in direct heat transfer relation to said nozzle member; electrical insulation means closing said bore; and electric leads connecting said heater to a source of current.
Claim 3
Dependent Claim
46 words
The heated nozzle system recited in claim 1, wherein said nozzle is shaped at one end to restrict said melt passage, said body having a gate in flow communication with said melt passage and said shaped nozzle end having slot defining the location of said gate.
Claim 4
Dependent Claim
17 words
The heated nozzle system recited in claim 1, wherein said melt stream passage extends through said nozzle.
Claim 5
Dependent Claim
43 words
The heated nozzle system recited in claim 3, wherein said body has a gate in flow communication with said melt stream passage, and a finned member integral with and extending from said nozzle into said gate for heating the melt stream passing therethrough.
Claim 6
Dependent Claim
22 words
The heated nozzle system recited in claim 3, wherein multiple like melt stream passages extend through said nozzle and flank said bore.
Claim 7
Dependent Claim
28 words
The heated nozzle system recited in claim 3, wherein said nozzle has multiple like bores, each filled with an unsheathed electric heater, insulation material and insulated sealing means.
Claim 8
Dependent Claim
16 words
The heated nozzle system recited in claim 6, wherein said bores flank said melt stream passage.
Claim 9
Dependent Claim
30 words
The heated nozzle system recited in claim 7, wherein the periphery of said nozzle is grooved midway its length to expose and for exit of said thermocouple and said leads.
Claim 10
Dependent Claim
31 words
The heated nozzle system recited in claim 8, wherein said thermocouple and leads are connected external to said nozzle and said groove is sealed and insulated around said thermocouple and leads.
Claim 11
Dependent Claim
24 words
The heated nozzle system recited in claim 1, wherein a reciprocating valve extends longitudinally through said nozzle to open and close said melt passage.
Claim 12
Dependent Claim
33 words
The heated nozzle system recited in claim 1, wherein said casing comprises a metal tube telescoped over a metal core and said bore is defined by the space between said core and bore.
Claim 13
Dependent Claim
29 words
The heated nozzle system recited in claim 1, wherein said insulating material comprises an agglomerated sandwich of insulating material surrounding and embedding said heater therein compressed within said nozzle.
Claim 14
Dependent Claim
37 words
The heated nozzle system recited in claim 12, wherein said sandwich comprises a layer of insulating material and said heater comprises wire wound around said layer, and another layer of insulation material overlies said wire wound layer.
Claim 15
Dependent Claim
29 words
The heated nozzle system recited in claim 1, wherein said nozzle has a second bore and a thermocouple is sealed therein electrically connected to said heater by said leads.