US3719308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental drinking cup filling apparatus
Assignee: Weber Dental Manufacturing Co
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Filing: 1970-10-26
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Granted: 1973-03-06
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Expires: 1990-10-26
Abstract
Abstract A filling apparatus for a drinking cup for a dental unit which enables the cup to be filled automatically with a desired predetermined amount of cold water by pressing a control button. Hot water may be mixed with the cold water to temper the cold water during the automatic filling by pressing a second hot water button and holding the same for the time necessary to add and mix the desired amount of hot water. Alternately, the hot water button may be pressed to discharge a desired amount of hot water only into the cup.
Inventors
- 👤 D Buchtel
- 👤 K Lappin
- 👤 J Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:48
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A61C17/0205; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
384 words
Dental drinking cup filling apparatus for filling a cup or the like with a predetermined amount of water including a cold water supply, cup filler spout means, a cold water pipeline connecting the supply with the spout means; spaced first and second junctions in said pipeline between the supply and spout means; adjustable pressure regulating valve means located in said pipeline between the cold water supply and the first junction; solenoid operated cold water control valve means including a valve in the supply line between said junctions; a hot water branch line connected to each of and extending between said junctions, said branch line including heater means and solenoid operated hot water control valve means; the hot water control valve means including a valve located in the hot water branch line; a first control station, heater control means at said first station, and the cold water control valve means including a first actuating button located at said first station, and a time delay switch; said time delay switch holding the cold water solenoid valve open for a predetermined time interval after the time delay switch is actuated by the first actuating button; a second control station spaced from the first control station, the hot water control valve means including a second actuating button located at said second station; said second actuating button controlling the hot water branch line valve for supplying a flow of hot water from the hot water branch line to the spout means through the second junction independently of actuation of the cold water first actuating button and time delay switch; and metering valve means located in the pipeline between the second junction and the spout means for controlling the rate of flow of water discharged from the spout means including a manually adjustable control member located at said first station, said metering valve means together with the pressure regulating valve means and the time delay switch discharging the predetermined amount of water within the predetermined time interval determined by the time delay switch from the spout means to fill a cup located at the spout means, whereby the predetermined amount of water may be varied by varying either the time delay switch time interval, the setting of the pressure regulating valve means or the setting of the metering valve means.
Claim 2
Dependent Claim
384 words
Dental drinking cup filling apparatus for filling a cup or the like with a predetermined amount of water including a cold water supply, cup filler spout means, a cold water pipeline connecting the supply with the spout means; spaced first and second junctions in said pipeline between the supply and spout means; adjustable pressure regulating valve means located in said pipeline between the cold water supply and the first junction; solenoid operated cold water control valve means including a valve in the supply line between said junctions; a hot water branch line connected to each of and extending between said junctions, said branch line including heater means and solenoid operated hot water control valve means; the hot water control valve means including a valve located in the hot water branch line; a first control station, heater control means at said first station, and the cold water control valve means including a first actuating button located at said first station, and a time delay switch; said time delay switch holding the cold water solenoid valve open for a predetermined time interval after the time delay switch is actuated by the first actuating button; a second control station spaced from the first control station, the hot water control valve means including a second actuating button located at said second station; said second actuating button controlling the hot water branch line valve for supplying a flow of hot water from the hot water branch line to the spout means through the second junction independently of actuation of the cold water first actuating button and time delay switch; and metering valve means located in the pipeline between the second junction and the spout means for controlling the rate of flow of water discharged from the spout means including a manually adjustable control member located at said first station, said metering valve means together with the pressure regulating valve means and the time delay switch discharging the predetermined amount of water within the predetermined time interval determined by the time delay switch from the spout means to fill a cup located at the spout means, whereby the predetermined amount of water may be varied by varying either the time delay switch time interval, the setting of the pressure regulating valve means or the setting of the metering valve means.
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |