US4140013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow meter
Assignee: Siemens AG
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Filing: 1977-02-24
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Granted: 1979-02-20
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Expires: 1997-02-24
Abstract
Abstract A flow meter for metering the flow of gaseous or liquid media comprising a rotatably movable measuring organ, a measured-value pickup device for obtaining an electrical quantity corresponding to the revolutions of the measuring organ, and an evaluating device connected to the measured-value pickup device. In accordance with the invention, the flow meter is further provided with a voltage generator responsive to the measuring organ and with a means for coupling the output voltage of the generator via an electrical buffer device to the measured-value pickup device and/or the evaluating device.
Inventors
- 👤 Erhard Hunger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:41
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/22; B67D7/221; B67D7/222; B67D7/42; B67D7/425; G; G01; G01F; G01F1/00; G01F1/05; G01F1/06; G01F1/075; G01F15/00; G01F15/06; G01F15/065; G01F15/066; G01F15/068
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
137 words
In a flow meter for metering the flow of a medium, said flow meter comprising a chamber in which is disposed at least one rotatably moveable measuring organ, a measured value pickup device for deriving an electrical quantity corresponding to the revolutions of said measuring organ, and an evaluating device responsive to the pickup device, the improvement comprising: (a) a voltage generator separate from said pickup device and connected in driving relationship with said measuring organ, said generator comprising a magnetic coupling responsive to said measuring organ for providing an indication of the rotary movement of said measuring organ and a winding arrangement disposed adjacent said magnetic coupling providing an output voltage; and (b) means responsive to the output voltage of said winding arrangement for supplying power to one of said pickup device and said evaluating device.
Claim 2
Dependent Claim
137 words
In a flow meter for metering the flow of a medium, said flow meter comprising a chamber in which is disposed at least one rotatably moveable measuring organ, a measured value pickup device for deriving an electrical quantity corresponding to the revolutions of said measuring organ, and an evaluating device responsive to the pickup device, the improvement comprising: (a) a voltage generator separate from said pickup device and connected in driving relationship with said measuring organ, said generator comprising a magnetic coupling responsive to said measuring organ for providing an indication of the rotary movement of said measuring organ and a winding arrangement disposed adjacent said magnetic coupling providing an output voltage; and (b) means responsive to the output voltage of said winding arrangement for supplying power to one of said pickup device and said evaluating device.
Claim 3
Dependent Claim
27 words
A flow meter in accordance with claim 1 wherein: said magnetic coupling includes separated half portions; and said winding arrangement is fixedly arranged between said half portions.
Claim 4
Dependent Claim
16 words
A flow meter in accordance with claim 1 wherein: said winding arrangement is a printed circuit.
Claim 5
Dependent Claim
30 words
A flow meter in accordance with claim 1 wherein: said electrical evaluating device comprises: an electronic counting chain including a number of connected electrical building blocks; and a display device.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |