US2678877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing combustible gaseous mixtures of substantially constant pressure
Assignee: Individual
•
Filing: 1951-08-24
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Granted: 1954-05-18
•
Expires: 1971-08-24
Abstract
No abstract record available.
Inventors
- 👤 Tallent H Ransome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:38
CPC Classifications
G; G05; G05D; G05D11/00; B; B01; B01F; B01F23/00; B01F23/10; B01F23/19; B01F23/191; F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0352
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A GAS MIXING APPARATUS OF THE CHARACTER DESCRIBED, AN ASPIRATOR, MEANS FOR DELIVERING GAS AT A PRESSURE ABOVE FIVE POUNDS GAUGE TO THE ASPIRATOR, MEANS FOR DELIVERING COMPRESSED AIR ABOVE ATMOSPHERIC PRESSURE TO THE ASPIRATOR, A SERVICE MAIN INTO WHICH THE ASPIRATOR DISCHARGES, MEANS FOR VARYING THE RATIO OF GAS AND AIR, MEANS FOR MAINTAINING SAID AIR AT A LOW PRESSURE IN THE GAS, AND MEANS ACTUATED BY THE PRESSURE IN THE MAIN FOR SHUTTING OFF OR OPENING FLOW OF GAS AND AIR TO THE ASPIRATOR.
Claim 2
Dependent Claim
87 words
IN A GAS MIXING APPARATUS OF THE CHARACTER DESCRIBED, AN ASPIRATOR, MEANS FOR DELIVERING GAS AT A PRESSURE ABOVE FIVE POUNDS GAUGE TO THE ASPIRATOR, MEANS FOR DELIVERING COMPRESSED AIR ABOVE ATMOSPHERIC PRESSURE TO THE ASPIRATOR, A SERVICE MAIN INTO WHICH THE ASPIRATOR DISCHARGES, MEANS FOR VARYING THE RATIO OF GAS AND AIR, MEANS FOR MAINTAINING SAID AIR AT A LOW PRESSURE IN THE GAS, AND MEANS ACTUATED BY THE PRESSURE IN THE MAIN FOR SHUTTING OFF OR OPENING FLOW OF GAS AND AIR TO THE ASPIRATOR.
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) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |