US4290298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for in situ meter testing
Assignee: Honeywell Inc
•
Filing: 1980-02-22
•
Granted: 1981-09-22
•
Expires: 2000-02-22
Abstract
Abstract A system for in situ testing of fluid meters is disclosed in which a single dual-position valve is disposed in series with and downstream of the meter to be tested in the supply line. In the first position, the inlet and outlet openings of the valves are such that a fluid is enabled to pass straight through the valve along the supply line and in a second or test position, the upstream and downstream openings of the supply line to the valve are in communication with auxiliary ports not connected with each other enabling a test or calibration unit to be connected in series with the auxiliary test ports. In this manner, testing of the meter is accomplished without interruption of the gas supply to the user.
Inventors
- 👤 Asbjorn M. Severson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:25
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10; G01F25/15
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
A system for in situ testing of fluid meters comprising: a self-contained, dual-position valve disposed in the supply line in series with and downstream of the meter to be tested, said valve having a first position wherein the inlet and outlet openings of the valve are in communication with the upstream and downstream openings of the supply line such that the fluid is enabled to pass straight through the valve along the supply line, and a second position wherein the inlet and outlet openings of the valve are in communication with auxiliary ports not connected with each other; and means for connecting said auxiliary ports in series with a test or calibration unit.
Claim 2
Independent Claim
113 words
A system for in situ testing of fluid meters comprising: a self-contained, dual-position valve disposed in the supply line in series with and downstream of the meter to be tested, said valve having a first position wherein the inlet and outlet openings of the valve are in communication with the upstream and downstream openings of the supply line such that the fluid is enabled to pass straight through the valve along the supply line, and a second position wherein the inlet and outlet openings of the valve are in communication with auxiliary ports not connected with each other; and means for connecting said auxiliary ports in series with a test or calibration unit.
Claim 3
Dependent Claim
33 words
The system of claim 1 further comprising means for supplying auxiliary amounts of said fluid to said auxiliary valve port connecting said downstream supply line when said valve is in said second position.
Claim 4
Dependent Claim
27 words
The system of claim 1 further comprising pump means for returning said fluid passing through said test unit to said supply line through said downstream connecting port.
Claim 5
Dependent Claim
18 words
The system of claim 2 further comprising vent means for venting said gas passing through said test unit.
Claim 6
Dependent Claim
27 words
The system of claim 1 wherein said valve further comprises a plug operating in a cylinder which can slidably be moved between position one and position two.
Claim 7
Dependent Claim
22 words
The system of claim 5 wherein said valve further comprises sealing means for preventing leakage of said fluid from said supply line.
Claim 8
Dependent Claim
25 words
The system of claim 1 wherein said fluid passes as in both said first and second positions during the switching said valve between said positions.
References Cited (Backward Citations)
US3187551A
Cited
US3444724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |