US4112768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for taking a liquid sample
Assignee: US Philips Corp
•
Filing: 1977-09-14
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Granted: 1978-09-12
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Expires: 1997-09-14
Abstract
Abstract Analysis of a contaminated liquid by withdrawal of a liquid sample through a filtering element subjected to ultrasonic vibrations generated in the liquid to keep the filtering element clean.
Inventors
- 👤 Johannes Holland
- 👤 Hubertus Franciscus Marie Wagemans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:09
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; B; B01; B01D; B01D29/00; B01D29/01; B01D29/62; B01D29/70; B01D29/72; G01N1/22; G01N1/2202; G01N1/2205; G01N1/28; G01N1/40; G01N1/4077; G01N35/00; G01N35/10; G01N35/1004
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
75 words
Apparatus for taking a liquid sample from a contaminated liquid stream, which comprises a first compartment having an inlet and an outlet for the contaminated liquid stream, a second compartment having an outlet for the liquid sample, a filtering element separating the first compartment and the second compartment from each other, and an ultrasonic generator associated with said compartments for effecting cleaning of the filtering element by means of ultrasonic vibrations generated in the liquid.
Claim 2
Dependent Claim
75 words
Apparatus for taking a liquid sample from a contaminated liquid stream, which comprises a first compartment having an inlet and an outlet for the contaminated liquid stream, a second compartment having an outlet for the liquid sample, a filtering element separating the first compartment and the second compartment from each other, and an ultrasonic generator associated with said compartments for effecting cleaning of the filtering element by means of ultrasonic vibrations generated in the liquid.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 3, in which the ultrasonic generator is mounted in a wall of the first compartment.
Claim 4
Independent Claim
67 words
A method of taking a liquid sample from a contaminated liquid stream, which comprises passing the contaminated liquid stream through a first compartment, a second compartment being associated with said first compartment and being separated therefrom by a filtering element, withdrawing the liquid sample through said filtering element from said contaminated liquid stream, and cleaning said filtering element by means of ultrasonic vibrations generated in the liquid.
Claim 5
Independent Claim
67 words
A method of taking a liquid sample from a contaminated liquid stream, which comprises passing the contaminated liquid stream through a first compartment, a second compartment being associated with said first compartment and being separated therefrom by a filtering element, withdrawing the liquid sample through said filtering element from said contaminated liquid stream, and cleaning said filtering element by means of ultrasonic vibrations generated in the liquid.
Claim 6
Dependent Claim
14 words
A method according to claim 3, in which the ultrasonic vibrations are generated continuously.
References Cited (Backward Citations)
US3046791A
Cited
SU490486A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |