US3641818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring limited flow capacities
Assignee: Zellweger Uster AG
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Filing: 1970-03-19
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Granted: 1972-02-15
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Expires: 1990-03-19
Abstract
Abstract The present disclosure is directed to an apparatus for measuring limited flow capacities, particularly for monitoring continuouscycle automatic dispensing and analyzing devices. The apparatus comprises a measuring chamber adapted to be charged with a liquid to be measured, inlet means for introducing a quantity of liquid into the lower portion of the measuring chamber, a siphon tube communicating with the measuring chamber at substantially the same level as the inlet means, a first and second level sensor device disposed in the lower portion and upper portion of the measuring chamber respectively, said level sensor devices generating electrical signals when a predetermined level is passed and at least one clock means associated with the sensor devices for determining at least one filling time.
Inventors
- 👤 Klaus-Jurgen Ern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:55
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/28; G01F11/284
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
182 words
An apparatus for measuring limited flow capacities which comprises a measuring chamber adapted to be charged with a liquid to be measured, inlet means for introducing a quantity of liquid into the lower portion of the measuring chamber, a siphon tube communicating with the measuring chamber at substantially the same level as the inlet means, a first and a second level sensor device disposed in the lower portion and upper portion of the measuring chamber respectively, said level sensor devices generating electrical signals when a predetermined level is passed and first and second clock means connected to the sensor devices for determining a first and a second filling time, said first and second level sensor devices forming part of electric circuit means for controlling said first and second clock means, said electric circuit means including first means for actuating said first clock means as long as the liquid level is in the range of said second level sensor device and at the desired level and second means for actuating said second clock means when the liquid level falls below said desired level.
Claim 2
Independent Claim
182 words
An apparatus for measuring limited flow capacities which comprises a measuring chamber adapted to be charged with a liquid to be measured, inlet means for introducing a quantity of liquid into the lower portion of the measuring chamber, a siphon tube communicating with the measuring chamber at substantially the same level as the inlet means, a first and a second level sensor device disposed in the lower portion and upper portion of the measuring chamber respectively, said level sensor devices generating electrical signals when a predetermined level is passed and first and second clock means connected to the sensor devices for determining a first and a second filling time, said first and second level sensor devices forming part of electric circuit means for controlling said first and second clock means, said electric circuit means including first means for actuating said first clock means as long as the liquid level is in the range of said second level sensor device and at the desired level and second means for actuating said second clock means when the liquid level falls below said desired level.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1, wherein the first and second level sensor devices are first and second electrodes disposed in the measuring chamber.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2, wherein the second electrode is arranged at the desired level to be measured.
Claim 5
Dependent Claim
30 words
The apparatus of claim 2, wherein the first electrode is arranged in the lower portion of the measuring cylinder below the point where the siphon tube communicates with said cylinder.
Claim 6
Dependent Claim
30 words
The apparatus of claim 2 wherein the first electrode is arranged in the lower portion of the measuring cylinder above the point where the siphon tube communicates with said cylinder.
Claim 7
Dependent Claim
41 words
The apparatus of claim 2, wherein the siphon tube extends upwards along the measuring cyliNder from the bottom portion to the top portion thereof and then reverses its direction extending downward until it terminates below the level of the inlet means.
Claim 8
Dependent Claim
25 words
The apparatus of claim 6, wherein the second electrode is effective in a level range determined by the reversing bend portion of the siphon tube.
Claim 9
Dependent Claim
32 words
The apparatus of claim 6, wherein the lower portion of the second electrode extends beneath the reversing portion of the siphon tube and the upper portion extends out of the measuring cylinder.
Claim 10
Dependent Claim
12 words
The apparatus of claim 1, wherein the level sensors are photoelectric devices.
Claim 11
Dependent Claim
35 words
The apparatus of claim 1, wherein said first and second clock means are provided with setting means for ideal times and signal means which respond to deviations of the measuring time from the ideal time.
Claim 12
Dependent Claim
18 words
The apparatus of claim 1, wherein the discharge end of the siphon tube communicates with a collecting vessel.
Claim 13
Dependent Claim
23 words
The apparatus of claim 1, wherein the level sensors are connected to an electrical circuit containing a voltage source and a relay device.
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |