Patent US3354537A successfully refreshed from Google Patents.
US3354537A
Expired / Lapsed
US
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Renewable moineau-type pumping mechanism
Assignee: Individual
•
Filing: 1965-12-01
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Granted: 1967-11-28
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Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 Walter J O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:12
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/107; F04C2/1071; F04C2/1073; F04C2/1075; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49238; Y10T29/49242; Y10T29/49718; Y10T29/49732; Y10T29/49746
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A METHOD FOR RESIZING A RESILIENT STATOR STRUCTURE OF THE HELICAL VARIETY HAVING INFLATABLE PASSAGES EXTENDING THERETHROUGH AND JUXTAPOSED TO THE HELICAL CRESTS THEREOF, THE STEPS OF INSERTING A MOLD MEMBER THROUGH THE CAVITY OF SAID STATOR STRUCTURE, POSITIONING SAID MOLD MEMBER TO DETERMINE THE DESIRED HEIGHT OF SAID HELICAL CRESTS, INFLATING SAID PASSAGES WITH A PRESSURIZED MOLD LUBRICANT, RELEAS-
Claim 2
Independent Claim
60 words
A METHOD FOR RESIZING A RESILIENT STATOR STRUCTURE OF THE HELICAL VARIETY HAVING INFLATABLE PASSAGES EXTENDING THERETHROUGH AND JUXTAPOSED TO THE HELICAL CRESTS THEREOF, THE STEPS OF INSERTING A MOLD MEMBER THROUGH THE CAVITY OF SAID STATOR STRUCTURE, POSITIONING SAID MOLD MEMBER TO DETERMINE THE DESIRED HEIGHT OF SAID HELICAL CRESTS, INFLATING SAID PASSAGES WITH A PRESSURIZED MOLD LUBRICANT, RELEAS-
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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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |