Patent US4154229A successfully refreshed from Google Patents.
Patent US3568667A successfully refreshed from Google Patents.
US3568667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic teeth cleaner and gum massager
Assignee: PRODUCTS DESIGN AND DEV CO
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Filing: 1967-08-14
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Granted: 1971-03-09
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Expires: 1987-08-14
Abstract
Abstract Oral hygiene apparatus connectable to and energizable by a pressurized water supply line to produce a pulsating stream of water, or water mixed with a secondary fluid, through a nozzle which is held in the mouth and directed at the gingivi and dental crevices for massaging and cleansing.
Inventors
- 👤 Stanley Krieger
- 👤 Harwell L Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:16
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A61C17/028; A61C17/032
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
Oral hygiene apparatus connectable to and energizable by a pressurized water supply line to produce an output stream of pulsating water through a nozzle, said apparatus comrising: a. a support housing defining a passage having an input for receiving pressurized water from a supply line, an output port for delivering a pulsating flow of water and an exhaust port; b. a valve core pivotally mounted in said passage and rotatably driven by the pressurized water, said core comprising a hollow shaft having one open end for receiving pressurized water and at least one dependent radial arm having a thrust orifice with a water passageway connected to the hollow water passage of said shaft, and a valve orifice disposed in the wall oF said shaft for supplying pulses of water to said output port; c. means for mechanically loading said rotating valve core; and d. a nozzle having an orifice connnected to said output port.
Claim 2
Dependent Claim
154 words
Oral hygiene apparatus connectable to and energizable by a pressurized water supply line to produce an output stream of pulsating water through a nozzle, said apparatus comrising: a. a support housing defining a passage having an input for receiving pressurized water from a supply line, an output port for delivering a pulsating flow of water and an exhaust port; b. a valve core pivotally mounted in said passage and rotatably driven by the pressurized water, said core comprising a hollow shaft having one open end for receiving pressurized water and at least one dependent radial arm having a thrust orifice with a water passageway connected to the hollow water passage of said shaft, and a valve orifice disposed in the wall oF said shaft for supplying pulses of water to said output port; c. means for mechanically loading said rotating valve core; and d. a nozzle having an orifice connnected to said output port.
Claim 3
Dependent Claim
174 words
Oral hygiene apparatus connectable to and energizable by a pressurized water supply line to produce an output stream of pulsating water through a nozzle, said apparatus comprising: a. a support housing defining a passage having an input for receiving pressurized water from a supply line, an output port for delivering a pulsating flow of water and an exhaust port; b. a valve core pivotally mounted in said passage and rotatably driven by the pressurized water, said core comprising a hollow shaft having one open end for receiving pressurized water and at least one dependent radial arm having a thrust orifice with a water passageway connected to the hollow water passage of said shaft, and a valve orifice disposed in the wall of said shaft for supplying pulses of water to said output port; c. means for submerging a portion of the rotating valve core in a reservoir of water to mechanically load and thereby regulate the rotational speed of said valve core; and d. a nozzle having an orifice connected to said output port.
Claim 4
Dependent Claim
174 words
Oral hygiene apparatus connectable to and energizable by a pressurized water supply line to produce an output stream of pulsating water through a nozzle, said apparatus comprising: a. a support housing defining a passage having an input for receiving pressurized water from a supply line, an output port for delivering a pulsating flow of water and an exhaust port; b. a valve core pivotally mounted in said passage and rotatably driven by the pressurized water, said core comprising a hollow shaft having one open end for receiving pressurized water and at least one dependent radial arm having a thrust orifice with a water passageway connected to the hollow water passage of said shaft, and a valve orifice disposed in the wall of said shaft for supplying pulses of water to said output port; c. means for submerging a portion of the rotating valve core in a reservoir of water to mechanically load and thereby regulate the rotational speed of said valve core; and d. a nozzle having an orifice connected to said output port.
References Cited (Backward Citations)
US3468306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |