US3595252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlled washing by de-ionized high-purity, recirculated water, particularly adapted for scientific glassware
Assignee: Individual
•
Filing: 1968-06-26
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Granted: 1971-07-27
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Expires: 1988-06-26
Abstract
Abstract Apparatus for controlled washing of scientific glassware, articles and materials, comprising an open-topped housing adapted to use the de-ionized water produced by one or more ion exchange columns that are arranged in the lower portion of the housing, such housing being provided, at a certain distance from the base, with a partition on which (without requiring watertight relation) spray-washing can be effected with high-purity water that is collected in a underlying container and is recirculated by a motor-driven pump, and a conductimeter connected in the circuit to afford measurement of the specific resistance of wash water and, therefore, the degree of purity of the individual wash areas.
Inventors
- 👤 Giovanni Conte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/20; B08B9/28; B01; B01L; B01L13/00; B01L13/02; B01L3/00; B01L3/56; B01L3/569
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
32 words
An apparatus according to claim 1, said housing being open at the top and said drain being centrally located in said partition, said drain discharging water by gravity into said collecting tank.
Claim 2
Independent Claim
226 words
An apparatus for controlled washing of laboratory glassware, articles and materials that are substantially not water soluble by means of high-purity demineralized recirculated water of substantially 10 to 15 megohms resistance, said apparatus comprising a housing substantially consisting of a transparent plastic material, said housing having a partition cemented therein, said housing having also a plurality of washing devices for washing particular articles, a drain in said partition, a collecting tank formed on the underside of said partition by said cementing, a motor-driven pump for recirculating said demineralized water, a demineralizing device having at least one column of ion-exchange resin, said column being preferably one of the mixed later interchangeable type, and an electrode-containing cell and a conductimeter connected to said cell, said conductimeter measuring the specific resistance and quality of said circulating water, said recirculation in said apparatus consisting of a system of pipe lines, flexible conduits and said pump whereby said demineralized water is taken from said tank by said pump, delivered through said demineralizing column and through said system of pipelines into said housing and into said plurality of devices for washing of said articles wherefrom said water is returned through said drain into said tank for being recirculated therefrom, said plurality of washing devices and said electrode-containing cell having means for receiving only the water from said washing devices to be checked.
Claim 3
Dependent Claim
65 words
An apparatus according to claim 3, and a wall on said tank, a removable diaphragm on said wall, said electrode-containing cell being fixed to said diaphragm and at said drain of said partition, and a tubular extension on said cell, said extension passing through said drain and projecting above said partition preventing the water flowing on the bottom of said partition from entering said cell.
Claim 4
Dependent Claim
69 words
An apparatus according to claim 4, and a second, central removable partition in said housing, a protecting removable ring-shaped washer on said drain, said tubular extension of said cell being fitted in said washer for being reinforced and protected thereby and a vertical removable conduit having a funnel at the top thereof, said conduit fitting over said tubular extension, projecting beyond and held vertically by said central removable partition.
Claim 5
Dependent Claim
39 words
An apparatus according to claim 4, and a removable discharge conduit on each of said washing devices, each of said conduits disposed to fit over said tubular extension when the respective one of said washing devices is being used.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |