US3251307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impeller for small-sized pump
Assignee: Individual
•
Filing: 1964-02-18
•
Granted: 1966-05-17
•
Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 Amirault Maxime
- 👤 Destoumieux Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:28
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/20; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN IMPELLER FOR SMALL-SIZED PUMPS, WHICH COMPRISES AN INNER SLEEVE ADAPTED TO BE RIGIDLY FORCE-FITTED ON A ROTARY SHAFT AND CARRIES OUTER PERIPHERAL BLADES, SAID IMPELLER CONSISTING OF A RIGID PORTION OF WHICH SAID SHAFTENGAGING FORCE-FITTING SLEEVE IS ANINTEGRAL PART, AT LEAST ONE RIGID MEMBER HAVING AN ANNULAR PLANE FACE EXTENDING AT RIGHT ANGLES TO THE SHAFT AXIS, AND A MEMBER OF RESILIENT MATERIAL ADAPTED TO SECURE SAID RIDIG MEMBER TO SAID RIGID PORTION PROVIDED WITH SAID FORCE-FITTING SLEEVE, WHEREBY SLIGHT DEFLECTION MOVEMENTS MAY BE PERFORMED BY SAID RIGID MEMBER AND ITS PLANE FACE IN A DIRECTION PARALLELTO SAID SHAFT AXIS.
Claim 2
Dependent Claim
101 words
AN IMPELLER FOR SMALL-SIZED PUMPS, WHICH COMPRISES AN INNER SLEEVE ADAPTED TO BE RIGIDLY FORCE-FITTED ON A ROTARY SHAFT AND CARRIES OUTER PERIPHERAL BLADES, SAID IMPELLER CONSISTING OF A RIGID PORTION OF WHICH SAID SHAFTENGAGING FORCE-FITTING SLEEVE IS ANINTEGRAL PART, AT LEAST ONE RIGID MEMBER HAVING AN ANNULAR PLANE FACE EXTENDING AT RIGHT ANGLES TO THE SHAFT AXIS, AND A MEMBER OF RESILIENT MATERIAL ADAPTED TO SECURE SAID RIDIG MEMBER TO SAID RIGID PORTION PROVIDED WITH SAID FORCE-FITTING SLEEVE, WHEREBY SLIGHT DEFLECTION MOVEMENTS MAY BE PERFORMED BY SAID RIGID MEMBER AND ITS PLANE FACE IN A DIRECTION PARALLELTO SAID SHAFT AXIS.
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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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |