Patent US3739979A successfully refreshed from Google Patents.
US3739979A
Expired / Lapsed
US
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Fluidic counter device
Assignee: Meidensha Electric Manufacturing Co Ltd
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Filing: 1971-03-22
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Granted: 1973-06-19
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Expires: 1991-03-22
Abstract
Abstract The present invention is to provide an improved fluidic counter device, wherein, instead of conventional devices a pair of suction openings is newly employed at the junction, so that more stable characteristics are obtainable.
Inventors
- 👤 K Hanada
- 👤 A Iwase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/12; F; F15; F15C; F15C1/00; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2229; Y10T137/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A fluidic counter device comprising: a. a pressure medium inlet opening; b. at least two outlet passages communicating with the pressure medium inlet opening; c. a loop passage communicating with said pressure medium inlet opening so as to direct said pressure medium to flow into one of the outlet passages; d. a single control inlet opening communicating with said loop passage at a junction for applying a continuous low pressure bias flow to maintain a continuous flow within said loop passage and an intermittent high pressure control pulse to the loop passage to direct the medium flow; and e. a pair of suction ports leading from the environment in opposite directions to the junction between the loop passage and the single control pulse inlet opening and having a flow of environmental fluid only into the junction.
Claim 2
Dependent Claim
136 words
A fluidic counter device comprising: a. a pressure medium inlet opening; b. at least two outlet passages communicating with the pressure medium inlet opening; c. a loop passage communicating with said pressure medium inlet opening so as to direct said pressure medium to flow into one of the outlet passages; d. a single control inlet opening communicating with said loop passage at a junction for applying a continuous low pressure bias flow to maintain a continuous flow within said loop passage and an intermittent high pressure control pulse to the loop passage to direct the medium flow; and e. a pair of suction ports leading from the environment in opposite directions to the junction between the loop passage and the single control pulse inlet opening and having a flow of environmental fluid only into the junction.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |