Patent US3335666A successfully refreshed from Google Patents.
US3335666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsator pumps
Assignee: IMO Industries Inc
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Filing: 1966-01-05
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Granted: 1967-08-15
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Expires: 1986-01-05
Abstract
No abstract record available.
Inventors
- 👤 Jerzy J Czarnecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:09
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; F04B43/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PUMP COMPRISING MEANS DEFINING A PUMPING CHAMBER, VALVED MEANS FOR DIRECTING THE FLOW OF PUMPED FLUID INTO AND OUT OF SAID CHAMBER, A PULSATOR FORMED OF AN ELASTIC MATERIAL DISPOSED WITHIN SAID CHAMBER, CORE MEANS SUPPORTING SAID PULSATOR AGAINST COLLAPSE, SAID CORE MEANS HAVING OPENINGS PERMITTING DRIVING LIQUID TO PASS INWARDLY AND OUTWARDLY THROUGH SAID OPENINGS, A SOURCE OF DRIVING LIQUID UNDER PRESSURE, AND MEANS ALTERNATELY DIRECTING DRIVING LIQUID THROUGH SAID OPENINGS TO EXPAND SAID PULSATOR AND PERMITTING DRIVING LIQUID TO EXIT THROUGH SAID OPENINGS TO PERMIT CONTRACTION OF SAID PULSATOR, SAID CORE MEANS INCLUDING VALVE MEANS OPERABLE WHEN THE PRESSURE DIFFERENTIAL ACROSS SAID PULSATOR REACHES A PREDETERMINED VALUE TO CLOSE SAID OPENINGS.
Claim 2
Dependent Claim
114 words
A PUMP COMPRISING MEANS DEFINING A PUMPING CHAMBER, VALVED MEANS FOR DIRECTING THE FLOW OF PUMPED FLUID INTO AND OUT OF SAID CHAMBER, A PULSATOR FORMED OF AN ELASTIC MATERIAL DISPOSED WITHIN SAID CHAMBER, CORE MEANS SUPPORTING SAID PULSATOR AGAINST COLLAPSE, SAID CORE MEANS HAVING OPENINGS PERMITTING DRIVING LIQUID TO PASS INWARDLY AND OUTWARDLY THROUGH SAID OPENINGS, A SOURCE OF DRIVING LIQUID UNDER PRESSURE, AND MEANS ALTERNATELY DIRECTING DRIVING LIQUID THROUGH SAID OPENINGS TO EXPAND SAID PULSATOR AND PERMITTING DRIVING LIQUID TO EXIT THROUGH SAID OPENINGS TO PERMIT CONTRACTION OF SAID PULSATOR, SAID CORE MEANS INCLUDING VALVE MEANS OPERABLE WHEN THE PRESSURE DIFFERENTIAL ACROSS SAID PULSATOR REACHES A PREDETERMINED VALUE TO CLOSE SAID OPENINGS.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |