US3607604A
Expired / Lapsed
US
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Flame arrester and pressure relief
Assignee: ROBERT D NAVA
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Filing: 1969-11-19
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Granted: 1971-09-21
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Expires: 1989-11-19
Abstract
Abstract The explosionproof enclosure of the invention has high performance characteristics in the functional area of flame arrest and pressure relief. The flame arrester which also functions as a pressure relief and water seal for the enclosure may be fabricated by bonding a top and bottom laminate to an interlaminate which is porous in a direction parallel to the top and bottom laminates. More particularly the interlaminate may be formed of a plurality of spheres so disposed in contacting relation as to provide a flame path between the environment within the enclosure and the atmosphere outside the enclosure.
Inventors
- 👤 Robert D Nava
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:35
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/02; H01H9/04; H01H9/042; H01H9/043; B; B32; B32B; B32B5/00; B32B5/16; B32B15/00; B32B15/16; B32B27/00; B32B27/14; B32B2264/00; B32B2264/02; B32B2264/0214; B32B2264/0228; B32B2264/0242; B32B2264/10; B32B2264/105; B32B2305/00; B32B2305/02; B32B2305/026; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/24997; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
20 words
A flame arrester of the character as defined by claim 1, wherein the interlaminate consists of a porous cellular fluoroplastic.
Claim 2
Dependent Claim
50 words
A flame arrester of the character as defined by claim 1, wherein the interlaminate consists of porous cellular vinylidene fluoride, and wherein the top and bottom laminates consist of sheets of flexible metal, said interlaminate and the metal sheets being shaped to conform to the configuration required for the enclosure.
Claim 3
Dependent Claim
74 words
A flame arrestor of the character as defined by claim 1, wherein the interlaminate is formed by a plurality of spheres bonded to adjacent spheres at their contacting area by a flexible or semiflexible polymer, and wherein the top and bottom laminates are formed of a discrete thickness of similar polymer material, said spheres being so disposed in said bonded relation that the lines connecting the centers of the spheres describe an equilateral pyramid.
Claim 4
Dependent Claim
88 words
A flame arrester of the character as defined by claim 1, wherein the interlaminate is formed by a plurality of metal spheres, said spheres having a coating of a flexible or semiflexible polymer and said spheres being bonded to adjacent spheres at their contacting areas by said coating, and wherein the top and bottom laminates are formed of a discrete thickness of the same polymer material, said spheres being so disposed in said bonded relation that the lines connecting the centers of the spheres describe an equilateral pyramid.
Claim 5
Dependent Claim
126 words
In a unitary flame arrester, pressure relief and water seal, in combination, a structural entity that can be bodily handled and attached to an enclosure, said structural entity consisting of suitably spaced top and bottom laminates, and a porous interlaminate disposed between the top and bottom laminates to thereby provide a flame path, said top and bottom laminates being formed of a material selected from the class consisting of polytrifluorochloroethylene, polyfluorosiloxane, polytetrafluoroethylene, fluorinated ethylene propylene, polyvinylidene fluoride, epichlorohydrin, chlorinated polyether, polyimide, and silica or glass particles, and said porous interlaminate comprising a plurality of spheres formed of a material selected from said class, the spheres being bonded to adjacent spheres and to the inside surfaces of the top and bottom laminates to form said structural entity.
Claim 6
Dependent Claim
37 words
A unitary flame arrester, pressure relief and water seal as defined by claim 6, wherein the spheres are so disposed in said bonded relation that the lines connecting the centers of the spheres describe an equilateral pyramid.
Claim 7
Dependent Claim
55 words
A unitary flame arrester, pressure relief and water seal as defined by claim 7, wherein the spheres are formed of metal, and wherein said metal spheres are coated with a plastic material selected from said class and then subjected to heat and pressure to cause the contacting areas to fuse to form the structural entity.
Claim 8
Dependent Claim
93 words
In a unitary flame arrester, pressure relief and water seal, the combination with an enclosure, of a structural entity interposed in a continuous configuration without discontinuity between any two parts of the enclosure to provide communication between the environment within and the environment external the enclosure, said structural entity consisting of suitably spaced top and bottom laminates and an interposed interlaminate, said interlaminate being porous in a direction parallel to the laminations to provide a flame path, and said interlaminate being bonded to the inside surfaces of the top and bottom laminates, respectively.
Claim 9
Dependent Claim
55 words
A unitary flame arrester, pressure relief and water seal as defined by claim 9, wherein the interlaminate is formed of a plurality of spheres in contacTing relation and which are so disposed that the lines connecting the centers of the spheres describe an equilateral pyramid, whereby the pores thus formed provide the said flame path.
Claim 10
Dependent Claim
47 words
A unitary flame arrester, pressure relief and water seal as defined by claim 10, wherein the spheres are formed of a metal and are bonded to adjacent spheres, and wherein the interlaminate thus formed is bonded to the inside surfaces of the top and bottom laminates, respective.
Claim 11
Dependent Claim
42 words
A unitary flame arrester, pressure relief and water seal as defined by claim 10, wherein the spheres are formed of a plastic material selected from the class consisting of polytrifluorochloroethylene, polyfluorosiloxane, polytetrafluoroethylene, fluorinated ethylene propylene, polyvinylidene fluoride, epichlorohydrin, chlorinated polyether and polyimide.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |