US4228678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfactant concentration detector
Assignee: Colgate Palmolive Co
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Filing: 1979-08-08
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Granted: 1980-10-21
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Expires: 1999-08-08
Abstract
Abstract An apparatus for detecting the concentration of a surfactant in a liquid solution comprising a wheel rotatably mounted in a tank and having a portion which extends outwardly thereof. A series of progressively larger holes arranged on a circle concentric with the axis of rotation of the wheel are formed therein as are notches in the periphery of the wheel. Photoelectric cells are used to count the films formed across the holes and the notches in the wheel to provide an indication of the concentration of a surfactant.
Inventors
- 👤 Clifton F. Slaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:35
CPC Classifications
G; G01; G01N; G01N13/00; G01N13/02; G01N2013/0275
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An apparatus for detecting the concentration of a surfactant liquid solution comprising a tank, means for delivering the liquid solution to said tank, a wheel rotatable in said tank, said wheel having a series of progressively larger holes therethrough, said holes being centered on a circle concentric with the axis of rotation of said wheel, said wheel having notches in the periphery thereof corresponding to each of said holes, a portion of said wheel rising out of said tank, first photocell means directed at said wheel for detecting films formed across any of said holes, second photocell means for counting said notches to time said wheel, and means for slowly rotating said wheel.
Claim 2
Independent Claim
113 words
An apparatus for detecting the concentration of a surfactant liquid solution comprising a tank, means for delivering the liquid solution to said tank, a wheel rotatable in said tank, said wheel having a series of progressively larger holes therethrough, said holes being centered on a circle concentric with the axis of rotation of said wheel, said wheel having notches in the periphery thereof corresponding to each of said holes, a portion of said wheel rising out of said tank, first photocell means directed at said wheel for detecting films formed across any of said holes, second photocell means for counting said notches to time said wheel, and means for slowly rotating said wheel.
Claim 3
Dependent Claim
23 words
An apparatus according to claim 1, including baffle means between said means for delivering said liquid solution and said wheel for reducing foaming.
Claim 4
Independent Claim
78 words
An apparatus for detecting the concentration of a liquid solution comprising a tank, a wheel rotatably mounted in said tank so that portions thereof rise out of said tank, a series of progressively larger holes in said wheel, notches in said wheel corresponding to said holes, first photocell means for counting the holes having films thereacross when said wheel rises above said tank, and second photocell means for counting said notches to time the speed of said wheel.
Claim 5
Independent Claim
78 words
An apparatus for detecting the concentration of a liquid solution comprising a tank, a wheel rotatably mounted in said tank so that portions thereof rise out of said tank, a series of progressively larger holes in said wheel, notches in said wheel corresponding to said holes, first photocell means for counting the holes having films thereacross when said wheel rises above said tank, and second photocell means for counting said notches to time the speed of said wheel.
Claim 6
Dependent Claim
17 words
An apparatus according to claim 3, wherein said notches are formed in the periphery of said wheel.
Claim 7
Dependent Claim
19 words
An apparatus according to claim 4, including baffle means for reducing foaming of said liquid solution in said tank.
Claim 8
Dependent Claim
30 words
An apparatus according to claim 3, wherein said notches are formed in the periphery of said wheel, and baffle means for reducing foaming of said liquid solution in said tank.
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) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |