US2557008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting explosive gases
Assignee: Individual
•
Filing: 1947-08-04
•
Granted: 1951-06-12
•
Expires: 1967-08-04
Abstract
No abstract record available.
Inventors
- 👤 Poole Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/14; G01N27/18; G01N27/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
227 words
IN A GAS TESTING APPARATUS, THE COMBINATION OF: CASING MEANS HAVING AN ELONGATED CAVITY THEREIN AND HAVING INLET AND OUTLET PASSAGES THEREIN RESPECTIVELY COMMUNICATING WITH OPPOKSITE ENDS OF SAID CAVITY; AN IMPERFORATE INLET BAFFLE IN SAID CAVITY INTERMEDIATE SAID INLET AND OUTLET PASSAGES AND SPACED FROM ONE END OF SAID CAVITY TO PROVIDE AN INLET CHAMBER COMMUNICAING WITH SAID INLET PASSAGE, SAID IN LET BAFFLE EXTENDING INTO CLOSE PROXIMITY TO BUT BEING SPACED FROM THE PERIPHERAL WALL OF SAID CAVITY SO AS TO PROVIDE A NARROW, PERIPHERAL INLET PORT THROUGH WHICH A GAS IN SAID INLET CHAMBER IS REQUIRED TO FLOW TO PASS SAID INLET BAFFLE; AN IMPERFORATE OUTLET BAFFLE IN SAID CAVITY INTERMEDIATE SAID INLET BAFFLE AND SAID OUTLET PASSAGE, SAID OUTLET BAFFLE BEING SPACED FROM SAID INLET BAFFLE TO PROVIDE A COMPARTMENT THEREBETWEEN AND BEING SPACED FROM THE OTHER END OF SAID CAVITY TO PROVIDE AN OUTLET CHAMBER COMMUNICATING WITH SAID OUTLET PASSAGE, SAID OUTLET BAFFLE EXTENDING INTO CLOSE PROXIMITY TO BUT BEING SPACED FROM THE PERIPHERAL WALL OF SAID VACITY SO AS TO PROVIDE A NARROW, PERIPHERAL OUTLET PORT THROUGH WHICH A GAS IN SAID COMPARTMENT IS REQUIRED TO FLOW TO PASS SAID OUTLET BAFFLE AND ENTER SAID OUTLET CHAMBER; MEANS FOR SUPPORTING SAID BAFFLES IN SAID CAVITY; AND A FILAMENT CARRIED BY SAID SUPPORTING MEANS AND DISPOSED IN SAID COMPARTMENT INTERMEDIATE SAID BAFFLES.
Claim 2
Dependent Claim
227 words
IN A GAS TESTING APPARATUS, THE COMBINATION OF: CASING MEANS HAVING AN ELONGATED CAVITY THEREIN AND HAVING INLET AND OUTLET PASSAGES THEREIN RESPECTIVELY COMMUNICATING WITH OPPOKSITE ENDS OF SAID CAVITY; AN IMPERFORATE INLET BAFFLE IN SAID CAVITY INTERMEDIATE SAID INLET AND OUTLET PASSAGES AND SPACED FROM ONE END OF SAID CAVITY TO PROVIDE AN INLET CHAMBER COMMUNICAING WITH SAID INLET PASSAGE, SAID IN LET BAFFLE EXTENDING INTO CLOSE PROXIMITY TO BUT BEING SPACED FROM THE PERIPHERAL WALL OF SAID CAVITY SO AS TO PROVIDE A NARROW, PERIPHERAL INLET PORT THROUGH WHICH A GAS IN SAID INLET CHAMBER IS REQUIRED TO FLOW TO PASS SAID INLET BAFFLE; AN IMPERFORATE OUTLET BAFFLE IN SAID CAVITY INTERMEDIATE SAID INLET BAFFLE AND SAID OUTLET PASSAGE, SAID OUTLET BAFFLE BEING SPACED FROM SAID INLET BAFFLE TO PROVIDE A COMPARTMENT THEREBETWEEN AND BEING SPACED FROM THE OTHER END OF SAID CAVITY TO PROVIDE AN OUTLET CHAMBER COMMUNICATING WITH SAID OUTLET PASSAGE, SAID OUTLET BAFFLE EXTENDING INTO CLOSE PROXIMITY TO BUT BEING SPACED FROM THE PERIPHERAL WALL OF SAID VACITY SO AS TO PROVIDE A NARROW, PERIPHERAL OUTLET PORT THROUGH WHICH A GAS IN SAID COMPARTMENT IS REQUIRED TO FLOW TO PASS SAID OUTLET BAFFLE AND ENTER SAID OUTLET CHAMBER; MEANS FOR SUPPORTING SAID BAFFLES IN SAID CAVITY; AND A FILAMENT CARRIED BY SAID SUPPORTING MEANS AND DISPOSED IN SAID COMPARTMENT INTERMEDIATE SAID BAFFLES.
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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |