US3838516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water supply system for dental instruments
Assignee: National Water Pure Corp
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Filing: 1973-02-14
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Granted: 1974-10-01
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Expires: 1993-02-14
Abstract
Abstract A water supply system for dental instruments wherein an ion exchange unit is provided between the water supply and the instruments for the purpose of either softening or demineralizing the water, or both. Means are provided for reactivating the ion exchange bed either by passing a regeneration material through the bed or by using a replaceable cartridge containing a fresh ion exchange bed.
Inventors
- 👤 S Borochaner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:55
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/02; B01J47/022; B01J47/024
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A water supply system for dental instruments comprising at least one container holding a bed of ion-exchange material, at least one water-utilizing dental instrument in fluid communication with said container, a water-supply conduit leading from a source of water to said container, said conduit having a selectively-operable shut-off valve and also having an outlet leading to an expectorant bowl, a drain pipe leading to drainage from said expectorant bowl, and means for reactivating the ionexchange bed when it nears exhaustion.
Claim 2
Dependent Claim
80 words
A water supply system for dental instruments comprising at least one container holding a bed of ion-exchange material, at least one water-utilizing dental instrument in fluid communication with said container, a water-supply conduit leading from a source of water to said container, said conduit having a selectively-operable shut-off valve and also having an outlet leading to an expectorant bowl, a drain pipe leading to drainage from said expectorant bowl, and means for reactivating the ionexchange bed when it nears exhaustion.
Claim 3
Dependent Claim
87 words
The system of claim 1 wherein said means for reactivating comprises a chamber positioned above said container, said chaMber being constructed to hold renewable amounts of an ion-exchange regenerating material, said chamber being in fluid connection with said conduit leading from the source of water, and also being in fluid connection with said container, and said container being in selective fluid connection with said water-supply conduit and with a drainage conduit through a selectively-positioned control valve, said drainage conduit being in fluid connection with said drain pipe.
Claim 4
Dependent Claim
51 words
The system of claim 2 wherein there are two containers, one of said containers holding an anionic ion-exchange bed and the other holding a cationic ion-exchange bed, said regeneration chamber being in selective fluid communication with each of said containers, and a separate control valve in operative connection with each container.
Claim 5
Dependent Claim
33 words
The system of claim 3 wherein said containers are linearly arranged to permit flow of water from said water-supply conduit through both containers when the respective control valves are arranged in predetermined positions.
Claim 6
Dependent Claim
52 words
The system of claim 1 wherein said container is a replaceable cartridge, and said means for reactivating comprises releasable connections between said cartridge and conduits leading respectively from said water-supply conduit and from said dental instrument, a cartridge having an exhausted ion-exchange bed being replaceable by a cartridge having a fresh bed.
Claim 7
Dependent Claim
95 words
The system of claim 1 wherein said container is provided with a regeneration feed inlet housing at one end, said housing being in fluid communication with said container and having a feed inlet for receiving fluid regeneration material, said housing also being in fluid communication with said water-supply conduit, a control valve at the opposite end of said container, and conduit means connecting said control valve to said water-supply conduit and to said drain pipe, said control valve being selectively adjustable to open or close communication between both of said last-mentioned conduits and said container.
Claim 8
Dependent Claim
13 words
The system of claim 1 wherein said container is at least partially transparent.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |