US3913625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-polymer plastic material and device made therefrom
Assignee: TITEFLEX
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Filing: 1972-06-14
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Granted: 1975-10-21
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Expires: 1992-06-14
Abstract
Abstract An admixture of silicone polymer is mixed with granulated polytetrafluoroethylene (TFE) (or related fluoroplastic material) particles in the general order of 0.001 inch - 0.015 inch in diameter grains. The admixture of silicone polymer and TFE is in the range of 25% to 75% by weight of TFE. When used to make any suitable device such as a hose, the mixture may be extruded contiguously over the hose surface. The admixture may also be formed into a tape configuration which may be wrapped over a base substrate. The material has substantial volume and flame resistance to provide ablation protection under conditions of high temperature. A similar material may optionally be applied over the outside of the hose as a scuff jacket, in which case the particles might be in the order of 0.005 inch - 0.010 inch in diameter.
Inventors
- 👤 Chester T Gazda
- 👤 James M Lalikos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/08; F16L3/12; F16L3/123; F16L3/1233; B; B29; B29C; B29C48/00; B29C48/15; B29C48/151; F16L57/00; F16L57/04; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1054; F16L58/109; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
60 words
AN ABRASION RESISTANT DEVICE COMPRISING AN INNER TUBE FOR CONVEYING FLUID, SAID TUBE HAVING THEREOVER AN OUTER PLASTIC JACKET PROVIDING AN ABLATIVE SCUFF COATING OF A LARGE VOLUME OF FLAME PROTECTIVE MATERIAL, SAID MATERIAL COMPRISING SINTERED THE FLON POWDER MIXED WITH SILICONE RUBBER, SAID MATERIAL EXPERIENCING A SLOW DEGRADATION OF PARTICLES WHICH CARRY OFF SURFACE HEAT WHEN SUBJECT TO FLAME.
Claim 2
Dependent Claim
60 words
AN ABRASION RESISTANT DEVICE COMPRISING AN INNER TUBE FOR CONVEYING FLUID, SAID TUBE HAVING THEREOVER AN OUTER PLASTIC JACKET PROVIDING AN ABLATIVE SCUFF COATING OF A LARGE VOLUME OF FLAME PROTECTIVE MATERIAL, SAID MATERIAL COMPRISING SINTERED THE FLON POWDER MIXED WITH SILICONE RUBBER, SAID MATERIAL EXPERIENCING A SLOW DEGRADATION OF PARTICLES WHICH CARRY OFF SURFACE HEAT WHEN SUBJECT TO FLAME.
Claim 3
Dependent Claim
12 words
The device of claim 1 and a scuff jacket surrounding said material.
Claim 4
Dependent Claim
50 words
The device of claim 1 wherein said ablative coating comprises a low stick or slippery surface characterized by chemical inertness, flame resistance, high ablative characteristics, high dielectric properties, flexibility over a wide temperature range, a high strength to weight ratio, toughness, structural strength, and low permeability to moisture and vapors.
Claim 5
Dependent Claim
19 words
The device of claim 1 and a continuous reinforcing braid covering interposed between said tube and said ablative coating.
Claim 6
Dependent Claim
10 words
The device of claim 4 wherein said braid is metallic.
Claim 7
Dependent Claim
13 words
The device of claim 4 wherein said braid is an electrically conductive material.
Claim 8
Dependent Claim
11 words
The device of claim 4 wherein said braid is stainless steel.
Claim 9
Dependent Claim
37 words
The device of claim 1 and electrically conductive means interposed between said tube and said ablative coating, said conductive means being formed by an electrically conductive material embedded in at least a portion of said ablative coating.
Claim 10
Dependent Claim
25 words
The device of claim 1 wherein said inner tube is Teflon tubing located near the axial center of an elongated cylinder of said ablative material.
Claim 11
Dependent Claim
14 words
The device of claim 9 and a scuff jacket of silicone surrounding said cylinder.
Claim 12
Dependent Claim
16 words
The device of claim 9 and a scuff jacket of a similar material surrounding said cylinder.
Claim 13
Dependent Claim
14 words
The device of claim 9 and a scuff jacket heat shrunk over said cylinder.
Claim 14
Dependent Claim
13 words
The device of claim 9 and a scuff jacket extruded over said cylinder.
Claim 15
Dependent Claim
17 words
The device of claim 9 and an electrically conductive layer interposed between said tubing and said material.
Claim 16
Dependent Claim
18 words
The device of claim 9 wherein an electrically conductive layer is provided as integral strata of said cylinder.
Claim 17
Dependent Claim
126 words
An abrasion resistant device comprising an inner tube for conveying fluid, said tube having thereover an outer plastic jacket providing an ablative scuff coating of a large volume of flame protective material said material comprising sintered Teflon powder mixed with silicone rubber, said material experiencing a slow degradation of particles which carry off surface heat when subject to flame, and a scuff jacket surrounding said material, said ablative covering comprising an admixture of a silicone-type polymer mixed with granulated sintered particles from the class of polytetrafluoroethylene and related fluoroplastic materials, said particles having diameters in the general order of 0.001 inch to 0.015 inch in diameter grains, and said admixture of silicone polymer and particles being proportioned in the range of 25% to 75% by weight.
Claim 18
Dependent Claim
126 words
An abrasion resistant device comprising an inner tube for conveying fluid, said tube having thereover an outer plastic jacket providing an ablative scuff coating of a large volume of flame protective material said material comprising sintered Teflon powder mixed with silicone rubber, said material experiencing a slow degradation of particles which carry off surface heat when subject to flame, and a scuff jacket surrounding said material, said ablative covering comprising an admixture of a silicone-type polymer mixed with granulated sintered particles from the class of polytetrafluoroethylene and related fluoroplastic materials, said particles having diameters in the general order of 0.001 inch to 0.015 inch in diameter grains, and said admixture of silicone polymer and particles being proportioned in the range of 25% to 75% by weight.
Claim 19
Dependent Claim
27 words
The device of claim 16 wherein said mixture of silicone-type material and particles is extruded contiguously over the surface of said tube, acting as its own mandrel.
Claim 20
Dependent Claim
27 words
The device of claim 16 wherein said mixture of silicone-type material and particles is formed into a tape configuration which may be wrapped over a base substrate.
Claim 21
Dependent Claim
82 words
A hose for a high performance aircraft comprising aggregate admixture of a base from the class of silicone polymer rubber or VF2 mixed with granulated sintered material in the class of TFE, FEP, or CTFE, a tube, the mixture being extruded onto and around said tube which serves as its own mandrel to form a scuff coat applied over the tube, the extruded mixture being different colors in different strata, whereby any damaging abrasion which penetrates the scuff coat is visually displayed.
Claim 22
Dependent Claim
82 words
A hose for a high performance aircraft comprising aggregate admixture of a base from the class of silicone polymer rubber or VF2 mixed with granulated sintered material in the class of TFE, FEP, or CTFE, a tube, the mixture being extruded onto and around said tube which serves as its own mandrel to form a scuff coat applied over the tube, the extruded mixture being different colors in different strata, whereby any damaging abrasion which penetrates the scuff coat is visually displayed.
Claim 23
Dependent Claim
15 words
The hose of claim 19 wherein said strata are different layers of a single extrudate.
Claim 24
Dependent Claim
22 words
The hose of claim 19 wherein the extruded material includes a fluorescent material whereby undue scuffing damage is detected under ultra-violet light.
Claim 25
Dependent Claim
23 words
The hose of claim 19 wherein the extruded material includes a light reflective material whereby undue scuffing damage is detected by Light reflection.
Claim 26
Dependent Claim
17 words
The hose of claim 19 and electrically conductive material interposed between said tube and said aggregate mixture.
Claim 27
Dependent Claim
36 words
The hose of claim 19 wherein said tube is TFE and said scuff coat is formed over the extrudate, said coat having a resistance to flame temperature which at least equals temperature resistance of said mixture.
Claim 28
Dependent Claim
80 words
The hose of claim 24 wherein the mixture is colored by a pigment in the class of ceramic black, chrome - cobalt - alumina, ceramic yellow, titanium pigments, cadmium sulfide, chrome - tin, cadmium mercury, cadmium sulfo-selenide, phthalocyanine, and nickel - azo, and the scuff coat is silicone rubber colored by a pigment in the class of iron oxide, ceramic black, ultramarine blue, chrome - cobalt - alumina, ceramic yellow, titanium pigments, chrome - tin, cadmium mercury, and cadmium sulfo-selenide.
Claim 29
Dependent Claim
49 words
A hose for a high performance aircraft, said hose comprising an inner Teflon tube having a laminated covering including metal braid, an ablative large volume flame protective coating of sintered Teflon powder mixed with silicon rubber over the metal braid, and a plastic scuff jacket over the protective coating.
Claim 30
Dependent Claim
49 words
A hose for a high performance aircraft, said hose comprising an inner Teflon tube having a laminated covering including metal braid, an ablative large volume flame protective coating of sintered Teflon powder mixed with silicon rubber over the metal braid, and a plastic scuff jacket over the protective coating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |