Patent US3828771A successfully refreshed from Google Patents.
US3828771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral hygiene device
Assignee: Gartner Research and Development Co
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Filing: 1972-11-10
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Granted: 1974-08-13
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Expires: 1992-11-10
Abstract
Abstract A bubble-containing water jet is provided in order that oral tissues may withstand a more rapid moving jet so that a nonpulsating jet of water can be more effectively utilized to provide cleansing of teeth and stimulation of oral tissue. The bubbles are produced by passing the water constituting the jet through a Venturi section of a tube which is vented in the low pressure section so that air is drawn into the water which is forced through the tube providing innumerable tiny bubbles in the water jet which issues from the outlet of the tube.
Inventors
- 👤 W Gartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A61C17/0217
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
109 words
An oral irrigating and tooth cleansing device comprising a tubular holder adapted to be held in the hand, said holder defining a lengthwise oriented bore communicating with an orifice, said bore containing a Venturi including a low pressure section at a location spaced from said orifice by a distance many fold in excess of the diameter of said bore, an air inlet communicating with said low pressure section of said Venturi, means for attaching the rear of said holder to a supply of water under pressure, and the front end of said holder being connected with a nozzle for directing a single jet of aerated water into the mouth.
Claim 2
Dependent Claim
109 words
An oral irrigating and tooth cleansing device comprising a tubular holder adapted to be held in the hand, said holder defining a lengthwise oriented bore communicating with an orifice, said bore containing a Venturi including a low pressure section at a location spaced from said orifice by a distance many fold in excess of the diameter of said bore, an air inlet communicating with said low pressure section of said Venturi, means for attaching the rear of said holder to a supply of water under pressure, and the front end of said holder being connected with a nozzle for directing a single jet of aerated water into the mouth.
Claim 3
Dependent Claim
18 words
A device as recited in claim 1 in which a tubular extension interconnects said holder and said nozzle.
Claim 4
Dependent Claim
26 words
A device as recited in claim 1 in which said nozzle is mounted at about a 45* angle with respect to the axis of said holder.
Claim 5
Dependent Claim
33 words
A device as recited in claim 1 in which said nozzle has an orifice having a diameter at the outlet in the range of from about one thirty-second inch to about one-eighth inch.
Claim 6
Dependent Claim
33 words
A device as recited in claim 4 in which said Venturi and said air inlet are dimensioned to introduce at least about 3,000 bubbles per second into the water flowing through said Venturi.
Claim 7
Dependent Claim
29 words
A device as recited in claim 5 in which the orifices in said nozzle and in the forward end of said holder have a diameter of about one-sixteenth inch.
Claim 8
Independent Claim
97 words
A method of cleansing the teeth and irrigating the gum tissues comprising passing a stream of water through a Venturi including a low pressure section, there being an air inlet connected with said low pressure section of said Venturi to introduce into said stream of water innumerable air bubbles having a diameter in the range of 0.005 inch to 0.050 inch, directing a stream of aerated water so-produced through a tube having a length many fold in excess of its diameter and thence through an orifice to form a jet, and directing said jet into the mouth.
Claim 9
Independent Claim
97 words
A method of cleansing the teeth and irrigating the gum tissues comprising passing a stream of water through a Venturi including a low pressure section, there being an air inlet connected with said low pressure section of said Venturi to introduce into said stream of water innumerable air bubbles having a diameter in the range of 0.005 inch to 0.050 inch, directing a stream of aerated water so-produced through a tube having a length many fold in excess of its diameter and thence through an orifice to form a jet, and directing said jet into the mouth.
Claim 10
Dependent Claim
50 words
A mehod as recited in claim 7 in which said aerated water is passed through an orifice having a diameter in the outlet in the range of about one thirty-second inch to about one-eighth inch in order to provide the jet of aerated water which is directed into the mouth.
Claim 11
Dependent Claim
23 words
A method as recited in claim 7 in which said aerated water in said jet contains at least about 3,000 bubbles per second.
Claim 12
Dependent Claim
23 words
A method as recited in claim 9 in which said aerated water in said jet contains at least about 10,000 bubbles per second.
Claim 13
Dependent Claim
19 words
A device as recited in claim 1 in which said supply of water under pressure comprises a household faucet.
References Cited (Backward Citations)
US2757668A
Cited
US3605734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |