US3353387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite tubular articles
Assignee: Texas Instruments Inc
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Filing: 1964-08-24
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Granted: 1967-11-21
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Expires: 1984-08-24
Abstract
No abstract record available.
Inventors
- 👤 James H Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:41
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/22; B05D7/222; B05D5/00; B05D5/08; B05D5/083; B05D1/00; B05D1/40; B05D1/42; B05D2202/00; B05D2202/40; B05D2202/45; B05D2701/00; B05D3/00; B05D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
THE METHOD OF MAKING A COMPOSITE TUBULAR ARTICLE COMPRISING THE STEPS OF PROVIDING A TUBULAR METAL MEMBER; CLEANING THE INSIDE SURFACE OF SAID METAL MEMBER TO REMOVE BARRIERS TO BONDING; APPLYING TO SAID CLEANED SURFACE, AS BY SPRAYING, A LAYER OF A COLLOIDAL SUSPENSION CONTAINING A CARRIER FLUID AND A PLASTIC IN A UNCURED CONDITION SELECTED FROM THE GROUP CONSISTING OF A TETRAFLUOROETHYLENE POLYMER AND A HEXAFLUOROPROPYLENETETRAFLUOROETHYLENE COPOLYMER; HEATING THE ASSEMBLY OF SAID METAL MEMBER AND PLASTIC LAYER AT A TEMPERATURE OF ABOUT 500*F. FOR A PERIOD OF ABOUT 10 MINUTES TO EVAPORATE THE FLUID CARRIER OF SAID COLLOIDAL SUSPENSION TO PARTICULARLY CURE THE PLASTIC MATERIAL; SUBSEQUENTLY HEATING AND PASSING SAID ASSEMBLY THROUGH A DRAW DIE WITH A STATIONARY ARBOR INSERTED IN SAID ASSEMBLY AND LOCATED ADJACENT SAID DIE TO SUBSTANTIALLY CURE AND ELIMINATE POROSITY IN SAID PLASTIC LAYER, AND TO BOND SAID PLASTIC LAYER TO SAID METAL MEMBER; SAID DRAWING STEP ALSO SQUEEZING SAID PLASTIC LAYER AGAINST SAID ARBOR TO EFFECT A REDUCTION IN THE CROSS SECTIONAL AREA OF SAID METAL MEMBER AND PLASTIC LAYER OF ABOUT 20-25% AND TO REDUCE THE THICKNESS OF SAID PLASTIC LAYER TO LIE WITHIN THE RANGE OF APPROXIMATELY 0.0001 INCH TO LESS THAN 0.004 INCH.
Claim 2
Independent Claim
202 words
THE METHOD OF MAKING A COMPOSITE TUBULAR ARTICLE COMPRISING THE STEPS OF PROVIDING A TUBULAR METAL MEMBER; CLEANING THE INSIDE SURFACE OF SAID METAL MEMBER TO REMOVE BARRIERS TO BONDING; APPLYING TO SAID CLEANED SURFACE, AS BY SPRAYING, A LAYER OF A COLLOIDAL SUSPENSION CONTAINING A CARRIER FLUID AND A PLASTIC IN A UNCURED CONDITION SELECTED FROM THE GROUP CONSISTING OF A TETRAFLUOROETHYLENE POLYMER AND A HEXAFLUOROPROPYLENETETRAFLUOROETHYLENE COPOLYMER; HEATING THE ASSEMBLY OF SAID METAL MEMBER AND PLASTIC LAYER AT A TEMPERATURE OF ABOUT 500*F. FOR A PERIOD OF ABOUT 10 MINUTES TO EVAPORATE THE FLUID CARRIER OF SAID COLLOIDAL SUSPENSION TO PARTICULARLY CURE THE PLASTIC MATERIAL; SUBSEQUENTLY HEATING AND PASSING SAID ASSEMBLY THROUGH A DRAW DIE WITH A STATIONARY ARBOR INSERTED IN SAID ASSEMBLY AND LOCATED ADJACENT SAID DIE TO SUBSTANTIALLY CURE AND ELIMINATE POROSITY IN SAID PLASTIC LAYER, AND TO BOND SAID PLASTIC LAYER TO SAID METAL MEMBER; SAID DRAWING STEP ALSO SQUEEZING SAID PLASTIC LAYER AGAINST SAID ARBOR TO EFFECT A REDUCTION IN THE CROSS SECTIONAL AREA OF SAID METAL MEMBER AND PLASTIC LAYER OF ABOUT 20-25% AND TO REDUCE THE THICKNESS OF SAID PLASTIC LAYER TO LIE WITHIN THE RANGE OF APPROXIMATELY 0.0001 INCH TO LESS THAN 0.004 INCH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |