US3713328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic measurement of viscosity
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1971-02-24
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Granted: 1973-01-30
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Expires: 1991-02-24
Abstract
Abstract The viscosity of a liquid is automatically measured by an apparatus comprising a Lantz-Zeitfuchs type reverse flow viscosimeter; a timing means actuated by photoelectric devices consisting of pairs of photoelectric cell and light source; a sequence control system; pumps and electromagnetic switch valves; said pumps and valves being internally communicated with said viscosimeter; said photoelectric cells being electrically connected to said sequence control system; whereby the actuations of said valves and pumps are programmed in sequence for measuring the time for viscosity counting, for washing and for drying the viscosimeter. The viscosimeter is placed in a constant temperature bath and has a timing bulb which is of one piece with protection tubes encasing light source lamps and photoelectric cells in pairs at the upper and lower timing marks of said bulb.
Inventors
- 👤 C Aritomi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:40
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; G01N11/04; G01N11/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
An apparatus for automatically measuring the viscosity of a liquid which comprises, a. a Lantz-Zeitfuchs reverse flow viscosimeter, said viscosimeter defining a timing bulb, a fill bulb, and a discharge outlet, b. photosensing means mounted adjacent said timing bulb to sense the passage of a liquid through said bulb, c. timing means connected to said photoelectric means to measure the time required by the liquid to pass through said timing bulb, d. means for automatically evacuating the liquid from the viscosimeter through said discharge outlet, e. sequence control means for automatically starting the flow of liquid in Said viscosimeter, energizing said timing means, and evacuating said liquid after said timing means has completed its measurement.
Claim 2
Independent Claim
115 words
An apparatus for automatically measuring the viscosity of a liquid which comprises, a. a Lantz-Zeitfuchs reverse flow viscosimeter, said viscosimeter defining a timing bulb, a fill bulb, and a discharge outlet, b. photosensing means mounted adjacent said timing bulb to sense the passage of a liquid through said bulb, c. timing means connected to said photoelectric means to measure the time required by the liquid to pass through said timing bulb, d. means for automatically evacuating the liquid from the viscosimeter through said discharge outlet, e. sequence control means for automatically starting the flow of liquid in Said viscosimeter, energizing said timing means, and evacuating said liquid after said timing means has completed its measurement.
Claim 3
Independent Claim
115 words
An apparatus for automatically measuring the viscosity of a liquid which comprises, a. a Lantz-Zeitfuchs reverse flow viscosimeter, said viscosimeter defining a timing bulb, a fill bulb, and a discharge outlet, b. photosensing means mounted adjacent said timing bulb to sense the passage of a liquid through said bulb, c. timing means connected to said photoelectric means to measure the time required by the liquid to pass through said timing bulb, d. means for automatically evacuating the liquid from the viscosimeter through said discharge outlet, e. sequence control means for automatically starting the flow of liquid in Said viscosimeter, energizing said timing means, and evacuating said liquid after said timing means has completed its measurement.
Claim 4
Independent Claim
115 words
An apparatus for automatically measuring the viscosity of a liquid which comprises, a. a Lantz-Zeitfuchs reverse flow viscosimeter, said viscosimeter defining a timing bulb, a fill bulb, and a discharge outlet, b. photosensing means mounted adjacent said timing bulb to sense the passage of a liquid through said bulb, c. timing means connected to said photoelectric means to measure the time required by the liquid to pass through said timing bulb, d. means for automatically evacuating the liquid from the viscosimeter through said discharge outlet, e. sequence control means for automatically starting the flow of liquid in Said viscosimeter, energizing said timing means, and evacuating said liquid after said timing means has completed its measurement.
Claim 5
Dependent Claim
35 words
An apparatus for automatically measuring the viscosity of a liquid as claimed in claim 1 which further comprises means for automatically washing and drying said viscosimeter, said means being controlled by said sequence control means.
Claim 6
Dependent Claim
65 words
An apparatus for automatically measuring the viscosity of a liquid as claimed in claim 2 wherein said means for washing and drying said viscosimeter further comprise reservoirs for washing and drying agents, control valves for selectively discharging said agents into said fill bulb, and pump means for assisting in the discharge of said agents, said sequence control means selectively actuating said valves and said pump.
Claim 7
Dependent Claim
42 words
An apparatus for automatically measuring the viscosity of a liquid as claimed in claim 1 wherein said timing bulb further defines protective tubes for encasing a light source means and photosensing means at the upper and lower portions of said timing bulb.
Claim 8
Dependent Claim
108 words
An apparatus for automatically measuring the viscosity of a liquid as claimed in claim 1 wherein said Lantz-Zeitfuchs reverse flow viscosimeter further defines an inlet portion, said inlet portion being connected to said fill bulb, an overflow bulb connected to the interconnection between said inlet portion and said fill bulb through a downwardly inclined tube, an inverted U-type tube section connected to the bottom of said fill bulb, a U-type capillary tube connected to the outlet end of said inverted U-type tube, said timing bulb connected to the outlet end of said U-type capillary tube, and said discharge outlet connected to the upper end of said timing bulb.
Claim 9
Dependent Claim
40 words
An apparatus for automatically measuring the viscosity of a liquid as claimed in claim 1 wherein said means for automatically evacuating the liquid comprise a discharge valve, a suction valve, a vent valve, and pump means for generating a vacuum.
Claim 10
Independent Claim
190 words
An apparatus for automatically measuring the viscosity of a liquid which comprises a. a viscosimeter, said viscosimeter defining a fill bulb, a capillary portion, a timing bulb, and a discharge outlet, b. photosensing means mounted adjacent said timing bulb to sense the passage of a liquid through said bulb, c. timing means connected to said photosensing means to measure the time required by the liquid to pass through said timing bulb, d. means for automatically evacuating the liquid from the viscosimeter through said discharge outlet opening, said means comprising a discharge valve, a vent valve, a suction valve, and pump means for generating a vacuum, e. means for washing and drying said viscosimeter, said means comprising reservoirs for washing and drying agents, control valves for selectively discharging said agents into said fill bulb, and pump means for assisting in the discharge of said agents to said fill bulb, and f. sequence control means for automatically starting the flow of liquid in said viscosimeter, energizing said timing means, evacuating said liquid after said timing means has completed its measurement, and washing and drying said viscosimeter after said liquid has been evacuated.
Claim 11
Independent Claim
190 words
An apparatus for automatically measuring the viscosity of a liquid which comprises a. a viscosimeter, said viscosimeter defining a fill bulb, a capillary portion, a timing bulb, and a discharge outlet, b. photosensing means mounted adjacent said timing bulb to sense the passage of a liquid through said bulb, c. timing means connected to said photosensing means to measure the time required by the liquid to pass through said timing bulb, d. means for automatically evacuating the liquid from the viscosimeter through said discharge outlet opening, said means comprising a discharge valve, a vent valve, a suction valve, and pump means for generating a vacuum, e. means for washing and drying said viscosimeter, said means comprising reservoirs for washing and drying agents, control valves for selectively discharging said agents into said fill bulb, and pump means for assisting in the discharge of said agents to said fill bulb, and f. sequence control means for automatically starting the flow of liquid in said viscosimeter, energizing said timing means, evacuating said liquid after said timing means has completed its measurement, and washing and drying said viscosimeter after said liquid has been evacuated.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |