Patent US3744313A successfully refreshed from Google Patents.
US3744313A
Expired / Lapsed
US
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Fluid flow metering device
Assignee: Taco Inc
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Filing: 1970-09-21
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Granted: 1973-07-10
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Expires: 1990-09-21
Abstract
Abstract A device for metering fluid flow, including a casing adapted for connection to a conduit and having a chamber registering with said conduit, and a plunger movable in the chamber in proportion to the amount of fluid flow through the chamber for giving an indication of the fluid flow. A valve is provided in the chamber for regulating the amount of fluid flow.
Inventors
- 👤 F Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:43
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22; G01F1/26; Y; Y10; Y10T; Y10T137/00; Y10T137/598
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A device for metering fluid flow through a conduit, comprising a casing adapted for connection to said conduit and having a flow chamber registering with said conduit, means responsive to fluid flow through said flow chamber for moving in proportion to the amount of fluid flow through said chamber, a cover extending over said casing and defining at least a portion of a damping chamber registering with said flow chamber, said damping chamber adapted to receive a portion of said fluid, a portion of said moving means adapted to move in said damping chamber, and means for preventing fluid flow from said flow chamber to said damping chamber upon removal of said cover.
Claim 2
Independent Claim
113 words
A device for metering fluid flow through a conduit, comprising a casing adapted for connection to said conduit and having a flow chamber registering with said conduit, means responsive to fluid flow through said flow chamber for moving in proportion to the amount of fluid flow through said chamber, a cover extending over said casing and defining at least a portion of a damping chamber registering with said flow chamber, said damping chamber adapted to receive a portion of said fluid, a portion of said moving means adapted to move in said damping chamber, and means for preventing fluid flow from said flow chamber to said damping chamber upon removal of said cover.
Claim 3
Dependent Claim
26 words
The device of claim 1 further comprising indicia means carried by said casing and cooperating with said moving means for providing an indication of said flow.
Claim 4
Dependent Claim
24 words
The device of claim 1 wherein a static fluid pressure is created in said damping chamber which opposes the movement of said moving means.
Claim 5
Dependent Claim
37 words
The device of claim 3 further comprising means to vent said damping chamber and relieve said static fluid pressure, and means responsive to said venting for preventing fluid flow from said flow chamber to said damping chamber.
Claim 6
Dependent Claim
19 words
The device of claim 1 further comprising means to regulate the amount of fluid flow through said flow chamber.
Claim 7
Dependent Claim
79 words
A flowmeter comprising a casing adapted for connection to a conduit and having a flow chamber registering with said conduit, means responsive to fluid flow through said flow chamber for moving in proportion to the amount of flow through said chamber, and cover means for said casing, said cover means defining a passage registering with said flow chamber for receiving said moving means, and means to seal said chamber automatically upon removal of said cover means from said casing.
Claim 8
Dependent Claim
79 words
A flowmeter comprising a casing adapted for connection to a conduit and having a flow chamber registering with said conduit, means responsive to fluid flow through said flow chamber for moving in proportion to the amount of flow through said chamber, and cover means for said casing, said cover means defining a passage registering with said flow chamber for receiving said moving means, and means to seal said chamber automatically upon removal of said cover means from said casing.
Claim 9
Dependent Claim
16 words
The flowmeter of claim 6 wherein said means to seal said chamber comprises said moving means.
Claim 10
Dependent Claim
26 words
The flowmeter of claim 6 wherein said cover includes indicia means cooperating with said moving means to provide an indicatIon of fluid flow through said chamber.
References Cited (Backward Citations)
US1038803A
Cited
US1450611A
Cited
US1565866A
Cited
US1855044A
Cited
DE572095C
Cited
US2210081A
Cited
US2400108A
Cited
US3415119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |