Patent US3244221A successfully refreshed from Google Patents.
US3244221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas mixing device
Assignee: Johns Manville Corp
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Filing: 1963-12-23
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Granted: 1966-04-05
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Labino Dominick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:36
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/62; F23D14/64; F23C; F23C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A DEVICE FOR PREMIXING THE COMPONENTS OF A GASEOUS ADMIXTURE, WHICH COMPRISES: (A) A STANDARD T-PIPE MEMBER; (B) FIRST STANDARD PIPE MEANS DEFINING A MIXING CHAMBER AND FORMING WITH THE SAID T-PIPE MEMBER AN ANNULAR MANIFOLD PASSAGE, (C) SAID FIRST STANDARD PIPE MEANS BEING IN SEALED RELATION WITH THE AXIAL ENDS OF THE HEAD OF SAID T-PIPE MEMBER; AND (D) SECOND STANDARD PIPE MEANS EXTENDING INTO AND BEING IN SPACED LATERAL RELATION WITH SAID FIRST STANDARD PIPE MEANS AT THE DOWNSTREAM END OF SAID SECOND STANDARD PIPE MEANS TO DEFINE AN ANNULAR SPACE THEREBETWEEN, (E) SAID SECOND STANDARD PIPE MEANS ALSO DEFINING AN ORIFICE FOR DISCHARGING THE TOTAL VOLUME OF ONE OF THE COMPONENTS OF SAID GASEOUS ADMIXTURE, (F) SAID FIRST STANDARD PIPE MEANS DEFINING PORT MEANS FOR DICHARGING THE TOTAL VOLUME OF ANOTHER COMPONENT OF SAID GASEOUS ADMIXTURE, (G) SAID PORT MEANS BEING IN OPEN COMMUNICATION WITH SAID ANNULAR MANIFOLD PASSAGE AND BEING SHROUDED BY SAID SECOND STANDARD PIPE MEANS TO DETER DIRECT ENTRAINMENT OF SAID OTHER COMPONENT BY SAID ONE OF THE COMPONENTS, AND (H) SAID FIRST AND SECOND STANDARD PIPE MEANS BEING ARRANGED IN SEALED RELATION AT AN AXIAL END OF SAID ANNULAR SPACE TO CLOSE ENTRY OF THE COMPONENTS OF SAID GASEOUS ADMIXTURE EXCEPT THROUGH SAID PORT MEANS AND SAID ORIFICE.
Claim 2
Independent Claim
215 words
A DEVICE FOR PREMIXING THE COMPONENTS OF A GASEOUS ADMIXTURE, WHICH COMPRISES: (A) A STANDARD T-PIPE MEMBER; (B) FIRST STANDARD PIPE MEANS DEFINING A MIXING CHAMBER AND FORMING WITH THE SAID T-PIPE MEMBER AN ANNULAR MANIFOLD PASSAGE, (C) SAID FIRST STANDARD PIPE MEANS BEING IN SEALED RELATION WITH THE AXIAL ENDS OF THE HEAD OF SAID T-PIPE MEMBER; AND (D) SECOND STANDARD PIPE MEANS EXTENDING INTO AND BEING IN SPACED LATERAL RELATION WITH SAID FIRST STANDARD PIPE MEANS AT THE DOWNSTREAM END OF SAID SECOND STANDARD PIPE MEANS TO DEFINE AN ANNULAR SPACE THEREBETWEEN, (E) SAID SECOND STANDARD PIPE MEANS ALSO DEFINING AN ORIFICE FOR DISCHARGING THE TOTAL VOLUME OF ONE OF THE COMPONENTS OF SAID GASEOUS ADMIXTURE, (F) SAID FIRST STANDARD PIPE MEANS DEFINING PORT MEANS FOR DICHARGING THE TOTAL VOLUME OF ANOTHER COMPONENT OF SAID GASEOUS ADMIXTURE, (G) SAID PORT MEANS BEING IN OPEN COMMUNICATION WITH SAID ANNULAR MANIFOLD PASSAGE AND BEING SHROUDED BY SAID SECOND STANDARD PIPE MEANS TO DETER DIRECT ENTRAINMENT OF SAID OTHER COMPONENT BY SAID ONE OF THE COMPONENTS, AND (H) SAID FIRST AND SECOND STANDARD PIPE MEANS BEING ARRANGED IN SEALED RELATION AT AN AXIAL END OF SAID ANNULAR SPACE TO CLOSE ENTRY OF THE COMPONENTS OF SAID GASEOUS ADMIXTURE EXCEPT THROUGH SAID PORT MEANS AND SAID ORIFICE.
References Cited (Backward Citations)
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |