US4365752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water pulsating unit for oral syringe
Assignee: Individual
•
Filing: 1981-05-04
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Granted: 1982-12-28
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Expires: 2001-05-04
Abstract
Abstract A pulsating device is disclosed herein for interrupting the flow of water being discharged via a nozzle carried on a dental syringe. The device includes a body coupled between the syringe and the nozzle having a central cavity partially occupied by a flutter valve. The valve includes a broad, flat member pivotally carried at its mid-section in the cavity so as to interfere with a flow of water passing through the cavity from the syringe to the nozzle. One end of the member is weighted so that the member flutters across the ports of the syringe and the nozzle to interrupt the water flow in response to the incoming water pressure from the syringe.
Inventors
- 👤 Avery Waisbren
- 👤 Arthur F. Kelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/02; B05B1/08; B05B1/083; A; A61; A61C; A61C17/00; A61C17/02; A61C17/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
239 words
A device for producing a pulsating stream from a main stream of pressurized water comprising the combination of: a body having inlet and outlet ports on opposite sides of a central cavity; said inlet port adapted to be connected to a source of pressurized water and said outlet port arranged to carry a discharge nozzle; rotary valve means movably carried on said body within said body cavity for yieldably interfering with flow of pressurized water conducted from said inlet port to said outlet port whereby a sequential series of pulsating water discharges from said nozzle in response to oscillatory rotary movement of said valve means; said valve means is a flutter valve pivotally carried on said body within said cavity; said flutter valve comprises an elongated member having pivots outwardly projecting in a lateral direction approximately mid-way between its opposite ends; said flutter valve member has movable opposite ends terminating in equally close proximity to said inlet and said outlet ports respectively; a weight carried on said valve member end in close proximity to said outlet port; said valve member is pivoted in response to the main fluid stream pressure whereby the main fluid stream pressure alternately strikes against one side and then the other side of said valve member at its end opposite to said end carrying said weight; and said valve member further includes a pair of spaced apart ribs carried on the opposite sides thereof respectively.
Claim 2
Independent Claim
239 words
A device for producing a pulsating stream from a main stream of pressurized water comprising the combination of: a body having inlet and outlet ports on opposite sides of a central cavity; said inlet port adapted to be connected to a source of pressurized water and said outlet port arranged to carry a discharge nozzle; rotary valve means movably carried on said body within said body cavity for yieldably interfering with flow of pressurized water conducted from said inlet port to said outlet port whereby a sequential series of pulsating water discharges from said nozzle in response to oscillatory rotary movement of said valve means; said valve means is a flutter valve pivotally carried on said body within said cavity; said flutter valve comprises an elongated member having pivots outwardly projecting in a lateral direction approximately mid-way between its opposite ends; said flutter valve member has movable opposite ends terminating in equally close proximity to said inlet and said outlet ports respectively; a weight carried on said valve member end in close proximity to said outlet port; said valve member is pivoted in response to the main fluid stream pressure whereby the main fluid stream pressure alternately strikes against one side and then the other side of said valve member at its end opposite to said end carrying said weight; and said valve member further includes a pair of spaced apart ribs carried on the opposite sides thereof respectively.
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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) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |