Patent US3853144A successfully refreshed from Google Patents.
US3853144A
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US
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Flowmeter
Assignee: University of Southern California
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Filing: 1973-03-09
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Granted: 1974-12-10
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Expires: 1993-03-09
Abstract
Abstract A gas flowmeter or regulator including a capillary tubing for delivering a desired and predetermined mass flow of a gas from the outlet of the meter.
Inventors
- 👤 J Whelan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:18
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0186; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87877
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
In a meter for regulating the flow of a fluid, the combination of: pressure regulating means for delivering a desired and uniform mass flow of a fluid to an outlet; a first conduit connected to said outlet; a pressure gauge connected to said first conduit; a capillary tubing one end of which is connected to said first conduit; a second conduit connected to the other end of said capillary tubing and having an outlet; an outlet valve connected to the outlet of the second conduit; and a flushing valve connected to said second conduit upstream of said outlet valve.
Claim 2
Dependent Claim
99 words
In a meter for regulating the flow of a fluid, the combination of: pressure regulating means for delivering a desired and uniform mass flow of a fluid to an outlet; a first conduit connected to said outlet; a pressure gauge connected to said first conduit; a capillary tubing one end of which is connected to said first conduit; a second conduit connected to the other end of said capillary tubing and having an outlet; an outlet valve connected to the outlet of the second conduit; and a flushing valve connected to said second conduit upstream of said outlet valve.
Claim 3
Dependent Claim
112 words
In a meter for regulating the flow of a fluid, the combination of: pressure regulating means for delivering a desired and uniform mass flow of a fluid to an outlet; a first condUit connected to said outlet; a pressure gauge connected to said first conduit; a capilary tubing one end of which is connected to said first conduit; a second conduit connected to the other end of said capillary tubing and having an outlet; and means disposed between said pressure regulating means and said capillary tubing for bleeding off a portion of the fluid to increase the velocity of the flow of fluid through said regulating means and to control the same.
Claim 4
Dependent Claim
112 words
In a meter for regulating the flow of a fluid, the combination of: pressure regulating means for delivering a desired and uniform mass flow of a fluid to an outlet; a first condUit connected to said outlet; a pressure gauge connected to said first conduit; a capilary tubing one end of which is connected to said first conduit; a second conduit connected to the other end of said capillary tubing and having an outlet; and means disposed between said pressure regulating means and said capillary tubing for bleeding off a portion of the fluid to increase the velocity of the flow of fluid through said regulating means and to control the same.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |