Patent US3255630A successfully refreshed from Google Patents.
US3255630A
Expired / Lapsed
US
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Positive displacement rotary gas meter
Assignee: Rockwell Manufacturing Co
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Filing: 1963-11-04
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Granted: 1966-06-14
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Karlby Henning
- 👤 Winston F Z Lee
- 👤 Richard V Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
G; G01; G01F; G01F3/00; G01F3/02; G01F3/04; G01F3/06; G01F3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A POSITIVE DISPLACEMENT ROTARY FLUID METERING APPARATUS EMBODYING: (A) A BODY HAVING FLUID INFLUENT AND EFFLUENT OPENINGS; (B) A FLUID DRIVEN ROTOR MOUNTED ON A FIRST SHAFT JOURNALLED IN SAID BODY, SAID ROTOR HAVING PLANAR NON-RADIAL VANES POSITIONED TO MINIMIZE PULSATION AND HEAD LOSS; (C) A ROTARY ABUTMENT MOUNTED ON A SECOND SHAFT JOURNALLED IN SAID BODY, THE ASSEMBLY OF SAID ROTARY ABUTMENT AND SAID SECOND SHAFT BEING DRIVEN BY SAID ROTOR THROUGH SHAFT-MOUNTED TIMING GEARS, SAID ROTARY ABUTMENT BEING SHAPED TO SPACEDLY MATE WITH SAID VANES DURING ROTATION TO PROVIDE FOR GRADUAL ENTRY OF SAID VANES WITH SUBSTANTIAL LESSENING OF IMPACT AGAINST THE FLUID;
Claim 2
Dependent Claim
105 words
A POSITIVE DISPLACEMENT ROTARY FLUID METERING APPARATUS EMBODYING: (A) A BODY HAVING FLUID INFLUENT AND EFFLUENT OPENINGS; (B) A FLUID DRIVEN ROTOR MOUNTED ON A FIRST SHAFT JOURNALLED IN SAID BODY, SAID ROTOR HAVING PLANAR NON-RADIAL VANES POSITIONED TO MINIMIZE PULSATION AND HEAD LOSS; (C) A ROTARY ABUTMENT MOUNTED ON A SECOND SHAFT JOURNALLED IN SAID BODY, THE ASSEMBLY OF SAID ROTARY ABUTMENT AND SAID SECOND SHAFT BEING DRIVEN BY SAID ROTOR THROUGH SHAFT-MOUNTED TIMING GEARS, SAID ROTARY ABUTMENT BEING SHAPED TO SPACEDLY MATE WITH SAID VANES DURING ROTATION TO PROVIDE FOR GRADUAL ENTRY OF SAID VANES WITH SUBSTANTIAL LESSENING OF IMPACT AGAINST THE FLUID;
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |