Patent US2539976A successfully refreshed from Google Patents.
Patent US3136254A successfully refreshed from Google Patents.
US3136254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional pump
Assignee: Valeo Engine Cooling Inc
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Filing: 1961-06-05
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Granted: 1964-06-09
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Expires: 1981-06-05
Abstract
No abstract record available.
Inventors
- 👤 Peyton W Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:27
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/08; D06F39/083; D06F39/085; F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205; F04D29/2222; F04D29/2227; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/50; F04D29/506; F04D29/60; F04D29/605; D06F2103/00; D06F2103/44; D06F2103/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A BI-DIRECTIONAL LIQUID FLOW PUMP COMPRISING A HOUSING HAVING A COMPARTMENT FORMED BY A GENERALLY CIRCULAR SIDE WALL AND SUBSTANTIALLY FLAT TOP AND BOTTOM WALLS, SAID TOP WALL HAVING AN LIQUID INLET OPENING OFFSET FROM THE AXIS OF THE GENERALLY CIRCULAR SIDEWALL, SAID SIDE WALL, IN AN ARCUATE PORTION THEREOF, HAVING A LARGE AND A SMALL OUTLET OPENING, AN IMPELLER IN SAID COMPARTMENT CONCENTRIC WITH THE CENTER FOR SAID ARCUATE PORTION, BLADES ON SAID IMPELLER EXTENDING RADIALLY AND BEING OF A LENGTH TO HAVE OPERATIONAL CONTACT WITH SAID ARCUATE PORTION, SAID BLADES, IN CROSS SECTION, EACH BEING OF THE NATURE OF A RIGHT ANGLE TRIANGLE AND PROVIDING BLADE SURFACES OF RELATIVELY DIFFERENT ANGULARITY WHEREBY SAID IMPELLER, WHEN ROTATED IN ONE DIRECTION WILL CREATE A LARGE FLOW FROM SAID PUMP AND WHERE ROTATED IN THE OPPOSITE DIRECTION WILL CREATE A SMALL VOLUME FLOW FROM SAID PUMP.
Claim 2
Dependent Claim
145 words
A BI-DIRECTIONAL LIQUID FLOW PUMP COMPRISING A HOUSING HAVING A COMPARTMENT FORMED BY A GENERALLY CIRCULAR SIDE WALL AND SUBSTANTIALLY FLAT TOP AND BOTTOM WALLS, SAID TOP WALL HAVING AN LIQUID INLET OPENING OFFSET FROM THE AXIS OF THE GENERALLY CIRCULAR SIDEWALL, SAID SIDE WALL, IN AN ARCUATE PORTION THEREOF, HAVING A LARGE AND A SMALL OUTLET OPENING, AN IMPELLER IN SAID COMPARTMENT CONCENTRIC WITH THE CENTER FOR SAID ARCUATE PORTION, BLADES ON SAID IMPELLER EXTENDING RADIALLY AND BEING OF A LENGTH TO HAVE OPERATIONAL CONTACT WITH SAID ARCUATE PORTION, SAID BLADES, IN CROSS SECTION, EACH BEING OF THE NATURE OF A RIGHT ANGLE TRIANGLE AND PROVIDING BLADE SURFACES OF RELATIVELY DIFFERENT ANGULARITY WHEREBY SAID IMPELLER, WHEN ROTATED IN ONE DIRECTION WILL CREATE A LARGE FLOW FROM SAID PUMP AND WHERE ROTATED IN THE OPPOSITE DIRECTION WILL CREATE A SMALL VOLUME FLOW FROM SAID PUMP.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |