US4051284A — Method for producing heat resistant synthetic res…

Claim 1

Independent Claim 89 words

Resin tubes for thin wire electrical insulator comprising non-extrudable heat resistant resin varnish, said varnish being such that when it is applied and cured on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inch, the resin layer formed will have a thermal life of at least 20,000 hours at 120° C and a cut-through temperature of at least 250° C, said tubes being seamless and having an inner diameter not greater than 5mm and a thickness not greater than 0.3mm.

Claim 2

Dependent Claim 89 words

Resin tubes for thin wire electrical insulator comprising non-extrudable heat resistant resin varnish, said varnish being such that when it is applied and cured on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inch, the resin layer formed will have a thermal life of at least 20,000 hours at 120° C and a cut-through temperature of at least 250° C, said tubes being seamless and having an inner diameter not greater than 5mm and a thickness not greater than 0.3mm.

Claim 3

Independent Claim 130 words

A method for molding seamless heat resistant synthetic resin tubes from non-extrudable resin, said tubes having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., comprising applying a heat resistant synthetic resin varnish on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inches, the resin layer formed having a thermal life of at least 20,000 hours at 120° C, and a cut-through temperature of at least 250° C after curing, curing said resin varnish to form a synthetic resin layer on the metal wire, drawing the heat resistant synthetic resin coating and wire above the yield point of the metal wire and separating the resulting synthetic resin tube from the metal wire.

Claim 4

Independent Claim 130 words

A method for molding seamless heat resistant synthetic resin tubes from non-extrudable resin, said tubes having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., comprising applying a heat resistant synthetic resin varnish on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inches, the resin layer formed having a thermal life of at least 20,000 hours at 120° C, and a cut-through temperature of at least 250° C after curing, curing said resin varnish to form a synthetic resin layer on the metal wire, drawing the heat resistant synthetic resin coating and wire above the yield point of the metal wire and separating the resulting synthetic resin tube from the metal wire.

Claim 5

Dependent Claim 38 words

The method as claimed in claim 2, wherein the step (1) for forming the synthetic resin layer on the metal wire, at least two different heat resistant synthetic resin varnishes are applied and cured on the metal wire.

Claim 6

Dependent Claim 21 words

The method as claimed in claim 2, wherein said heat resistant synthetic resin varnish is an organic solvent soluble type varnish.

Claim 7

Dependent Claim 19 words

The method as claimed in claim 2, wherein said heat resistant synthetic resin varnish is a water soluble varnish.

Claim 8

Dependent Claim 24 words

The method as claimed in claim 2, wherein said heat resistant synthetic resin varnish is a varnish of precursor of imide group-containing synthetic resins.

Claim 9

Dependent Claim 37 words

The method as claimed in claim 2, wherein said heat resistant synthetic resin varnish is selected from the group consisting of a varnish of precursor of polyhydantoin, a precursor of non-linear type polyester and a polyparabanic acid.

Claim 10

Dependent Claim 22 words

The method as claimed in claim 2, wherein said heat resistant synthetic resin varnish is a varnish of precursor of polyimide resin.

Claim 11

Dependent Claim 55 words

The method as claimed in claim 2 wherein the drawing beyond the yield point is effected by winding said resin coated metal wire around a first roll and then winding around a second roll, the circumferential speed of said first and second rolls being different, and rotating said rolls to draw said metal wire continuously.

Claim 12

Dependent Claim 26 words

The method as claimed in claim 2 wherein said drawing above said yield point is effected by passing said resin coated metal wire through a die.

Claim 13

Dependent Claim 39 words

The method as claimed in claim 21, wherein after separation of the resin from the metal wire is completed, the resulting heat resistant synthetic resin is heat treated at a temperature within a range of 100° to 300° C.

Claim 14

Dependent Claim 19 words

The method as claimed in claim 2, wherein the metal wire is a copper wire having a circular cross-section.

Claim 15

Dependent Claim 27 words

The method as claimed in claim 2, wherein, the metal wire is coated and baked with a silicone prior to prior to application of heat resistant varnish.

Claim 16

Dependent Claim 35 words

A seamless heat resistant synthetic resin tube having a thickness of not more than 0.3 mm and an inner diameter of not more than 5.0 mm produced in the methods as claimed in claims 2.

Claim 17

Dependent Claim 28 words

The tube as claimed in claim 14, wherein the resin is selected from the group consisting of polyimide, polyamideimide, polyesterimide, polyesteramideimide, non-linear type polyester, polyparabanic acid and polyhydantoin.

Claim 18

Dependent Claim 24 words

The tube as claimed in claim 14, wherein the heat resistant resin layer is constituted with at least two different heat resistant resin layers.

Claim 19

Dependent Claim 14 words

The tube as claimed in claim 14, wherein said heat resistant resin is polyimide.

Claim 20

Independent Claim 110 words

A method for molding composite of heat resistant synthetic resin tubes, said heat resistant resin being non-extrudable, said tubes having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., comprising: 1. forming at least two synthetic resin coated wires by applying a heat resistant synthetic resin varnish on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inches, the resin layer formed having a thermal life of at least 20,000 hours at 120° C, and a cut-through temperature of at least 250° C after curing, on each of at least two metal wires,

Claim 21

Independent Claim 110 words

A method for molding composite of heat resistant synthetic resin tubes, said heat resistant resin being non-extrudable, said tubes having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., comprising: 1. forming at least two synthetic resin coated wires by applying a heat resistant synthetic resin varnish on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inches, the resin layer formed having a thermal life of at least 20,000 hours at 120° C, and a cut-through temperature of at least 250° C after curing, on each of at least two metal wires,

Claim 22

Dependent Claim 56 words

contacting said resin coated metal wires mutually in parallel and then curing said resins to form integrally adhering resin coated composite wires, 3. drawing said integrally adhering resin coated composite wires above the yield point of said metal wires, and 4. separating the integrally adhered resin tubes from the metal wires to produce composite resin tubes.

Claim 23

Dependent Claim 56 words

contacting said resin coated metal wires mutually in parallel and then curing said resins to form integrally adhering resin coated composite wires, 3. drawing said integrally adhering resin coated composite wires above the yield point of said metal wires, and 4. separating the integrally adhered resin tubes from the metal wires to produce composite resin tubes.

Claim 24

Dependent Claim 20 words

The method as claimed in claim 18, wherein before the step (1) the metal wire is coated with a silicone.

Claim 25

Dependent Claim 45 words

A composite of synthetic resin tubes produced by the method as claimed in claim 18, wherein at least two seamless heat resistant synthetic resin tubes, each having a wall thickness of not more than 0.3 mm, are tightly adhered in parallel at the longitudinal direction.

Claim 26

Independent Claim 195 words

A method for molding a double layer heat resistant synthetic resin tube, consisting of an inner tube of a thermally adhesive resin and an outer tube of a non-extrudable heat resistant resin, said inner tube having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., a comprising: 1. applying a thermally adhesive resin layer on American Gauge No. 18 wire and baking said resin to form a thermally adhesive resin layer on the metal wire, 2. applying a heat resistant synthetic resin, said varnish being such that when it is applied and cured on the thermally adhesive resin coated wire thereby increasing the overall diameter of the thermally adhesive coated wire by 0.003 inches, and curing said resin varnish to form the heatresistant synthetic resin layer having a thermal life of at least 20,000 hours at 120° C and a cut-through temperature of at least 250° C on the thermally adhesive resin layer, 3. drawing the thus obtained double layer synthetic resin coated wire above the yield point of the metal wire, and 4. separating the resulting double layer synthetic resin tube from the metal wire.

Claim 27

Independent Claim 195 words

A method for molding a double layer heat resistant synthetic resin tube, consisting of an inner tube of a thermally adhesive resin and an outer tube of a non-extrudable heat resistant resin, said inner tube having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., a comprising: 1. applying a thermally adhesive resin layer on American Gauge No. 18 wire and baking said resin to form a thermally adhesive resin layer on the metal wire, 2. applying a heat resistant synthetic resin, said varnish being such that when it is applied and cured on the thermally adhesive resin coated wire thereby increasing the overall diameter of the thermally adhesive coated wire by 0.003 inches, and curing said resin varnish to form the heatresistant synthetic resin layer having a thermal life of at least 20,000 hours at 120° C and a cut-through temperature of at least 250° C on the thermally adhesive resin layer, 3. drawing the thus obtained double layer synthetic resin coated wire above the yield point of the metal wire, and 4. separating the resulting double layer synthetic resin tube from the metal wire.

Claim 28

Dependent Claim 20 words

The method as claimed in claim 21, wherein before the step (1), the metal wire is coated with a silicone.

Claim 29

Dependent Claim 29 words

The method as claimed in claim 21, wherein the thermally adhesive synthetic resin is selected from the group consisting of phenoxy resin, polysulfone resin, polyamide resin and epoxy resin.

Claim 30

Dependent Claim 29 words

The tube as claimed in claim 21, wherein said thermally adhesive synthetic resin is selected from the group consisting of phenoxy resin, polysulfone resin, polyamide resin and epoxy resin.

Claim 31

Independent Claim 189 words

A method for molding a double layer heat resistant synthetic resin tube consisting of an inner tube of a heat resistant non-extrudable resin, and an outer tube of a thermally adhesive synthetic resin, said inner tube being seamless and having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., comprising: 1. applying a heat resistant synthetic resin varnish, on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inches, the resin layer formed having a thermal life of at least 20,000 hours at 120° C and a cut-through temperature of at least 250° C when cured, and curing said resin varnish to form the synthetic resin layer, 2. applying a thermally adhesive synthetic resin on the synthetic resin coated wire and baking the thermally adhesive resin to form the thermally adhesive resin layer on the heat resistant synthetic resin layer, 3. drawing the resulting double layer synthetic resin coated wire above the yield point of the metal wire, and 4. separating the resulting double layer synthetic resin tube from the metal wire.

Claim 32

Independent Claim 189 words

A method for molding a double layer heat resistant synthetic resin tube consisting of an inner tube of a heat resistant non-extrudable resin, and an outer tube of a thermally adhesive synthetic resin, said inner tube being seamless and having an inner diameter of not more than 5 mm. and a thickness of not more than 0.3 mm., comprising: 1. applying a heat resistant synthetic resin varnish, on American Wire Gauge No. 18, copper wire, thereby increasing the overall diameter of the wire by 0.003 inches, the resin layer formed having a thermal life of at least 20,000 hours at 120° C and a cut-through temperature of at least 250° C when cured, and curing said resin varnish to form the synthetic resin layer, 2. applying a thermally adhesive synthetic resin on the synthetic resin coated wire and baking the thermally adhesive resin to form the thermally adhesive resin layer on the heat resistant synthetic resin layer, 3. drawing the resulting double layer synthetic resin coated wire above the yield point of the metal wire, and 4. separating the resulting double layer synthetic resin tube from the metal wire.

Claim 33

Dependent Claim 20 words

The method as claimed in claim 22, wherein before the step (1), the metal wire is coated with a silicone.

Claim 34

Dependent Claim 29 words

The method as claimed in claim 25, wherein the thermally adhesive synthetic resin is selected from the group consisting of phenoxy resin, polysulfone resin, polyamide resin and epoxy resin.

Claim 35

Dependent Claim 29 words

The tube as claimed in claim 25, wherein said thermally adhesive synthetic resin is selected from the group consisting of phenoxy resin, polysulfone resin, polyamide resin and epoxy resin.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-09-26	1981-03-28	1981-09-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-09-26	1985-03-28	1985-09-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-09-26	1989-03-28	1989-09-27	$7700.00	Window Closed / Lapsed

Method for producing heat resistant synthetic resin tubes

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