US3106166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pretimed three-lobed rotary pump
Assignee: Waterous Co
•
Filing: 1960-01-20
•
Granted: 1963-10-08
•
Expires: 1980-01-20
Abstract
No abstract record available.
Inventors
- 👤 Howard M Tomasko
- 👤 Robert A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:29
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/12; F04C2/123; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PRE-TIMED THREE LOBED ROTARY PUMP INCLUDING A PAIR OF THREE LOBED ROTORS HAVING VALLEY THEREBETWEEN, SHAFT SUPPORTING SAID ROTORS AND PROJECTING FROM THE ENDS THEREOF, MEANS ROTATABLY SUPPORTING SAID SHAFTS WITH SAID ROTORS INTERENGAGED, INTERMESHING GEARS ON SAID SHAFTS, SAID GEARS HAVING A SIMILAR ODD NUMBER OF TEETH WHICH IS A MULTIPLE OF THREE, ONE TOOTH OF EACH GEAR HAVING ITS CENTER ON A PLANE THROUGH THE AXIS OF ITS SHAFT AND THROUGH THE CENTER OF A ROTOR LOBE, AND ONE TOOTH SPACE OF EACH GEAR BEING ON A PLANE THROUGH THE AXIS OF THE SHAFT AND THROUGH THE CENTER OF A ROTOR VALLEY.
Claim 2
Dependent Claim
105 words
A PRE-TIMED THREE LOBED ROTARY PUMP INCLUDING A PAIR OF THREE LOBED ROTORS HAVING VALLEY THEREBETWEEN, SHAFT SUPPORTING SAID ROTORS AND PROJECTING FROM THE ENDS THEREOF, MEANS ROTATABLY SUPPORTING SAID SHAFTS WITH SAID ROTORS INTERENGAGED, INTERMESHING GEARS ON SAID SHAFTS, SAID GEARS HAVING A SIMILAR ODD NUMBER OF TEETH WHICH IS A MULTIPLE OF THREE, ONE TOOTH OF EACH GEAR HAVING ITS CENTER ON A PLANE THROUGH THE AXIS OF ITS SHAFT AND THROUGH THE CENTER OF A ROTOR LOBE, AND ONE TOOTH SPACE OF EACH GEAR BEING ON A PLANE THROUGH THE AXIS OF THE SHAFT AND THROUGH THE CENTER OF A ROTOR VALLEY.
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |