US3606583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic pumps
Assignee: Singer Co
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Filing: 1969-07-25
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Granted: 1971-09-20
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Expires: 1989-07-25
Abstract
Abstract A PUMP FOR ULTRASONICALLY PUMPING LIQUIDS HAS A STEPPED ULTRASONIC RESONATOR, A CONDUIT AND MEANS TO VIBRATE THE RESONATOR. THE TIP OF THE RESONATOR IS SUBMERGED IN THE LIQUID TO BE PUMPED, WHEREIN THE TIP IS DISPOSED ADJACENT TO AND FACING THE OPEN MOUTH OF THE CONDUIT THROUGH WHICH THE LIQUID IS TO BE PUMPED. THE VIBRATING TIP OF THE RESONATOR FORCES THE LIQUID INTO THE MOUTH OF THE CONDUIT. A SUCCESSION OF IMPULSES. CAUSED BY THE VIBRATING TIP, PUMPS THE LIQUID THROUGH THE CONDUIT.
Inventors
- 👤 Donald J Coughenour
- 👤 James N Tomlinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:29
CPC Classifications
F; F04; F04F; F04F7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |