Patent US3718034A successfully refreshed from Google Patents.
US3718034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic corrosion monitoring coupon injector
Assignee: Individual
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Filing: 1970-09-17
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Granted: 1973-02-27
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Expires: 1990-09-17
Abstract
Abstract A piston and cylinder assembly is mounted in valved communicating relation to the interior of a pipe line. The assembly includes a piston having a rod extending downwards toward a port in the pipe line. Upon proper actuation of hydraulic control means, the piston is forced downwardly until the piston rod is immersed in the fluid flowing through the pipe line. A metal plate is secured to the free end of the piston rod, the plate being subjected to the material flowing in the pipe line. After a certain interval, the hydraulic control means is actuated to cause retraction of the piston and the connected test plate. The plate is then removed and observed to determine the corrosive effect of the fluid on the pipe line.
Inventors
- 👤 D Swearingen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:45
CPC Classifications
G; G01; G01N; G01N17/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
An apparatus for selectively maneuvering a testing device into and out of a conduit, comprising, in combination: a. an injector including a hollowed cylinder; b. a piston slidably positioned in the cylinder; c. means for securing a testing device to the piston; d. fluid means connected to the cylinder for positively maneuvering the testing device in and out of a conduit arranged passing the injector by causing selective displacement of said piston, said fluid means being independent of a flow in the conduit; e. a hollowed adapter interposed between the injector and the conduit to provide a chamber into which the testing device may be retracted, said adapter enclosing an end of said cylinder and provided with means for sealingly and slidably engaging the securing means for forming means for isolating the fluid means from said chamber; and f. a valve interposed between the adapter and the conduit for selectively closing off the conduit from the injector.
Claim 2
Independent Claim
157 words
An apparatus for selectively maneuvering a testing device into and out of a conduit, comprising, in combination: a. an injector including a hollowed cylinder; b. a piston slidably positioned in the cylinder; c. means for securing a testing device to the piston; d. fluid means connected to the cylinder for positively maneuvering the testing device in and out of a conduit arranged passing the injector by causing selective displacement of said piston, said fluid means being independent of a flow in the conduit; e. a hollowed adapter interposed between the injector and the conduit to provide a chamber into which the testing device may be retracted, said adapter enclosing an end of said cylinder and provided with means for sealingly and slidably engaging the securing means for forming means for isolating the fluid means from said chamber; and f. a valve interposed between the adapter and the conduit for selectively closing off the conduit from the injector.
Claim 3
Dependent Claim
77 words
The structure of claim 1 wherein the fluid means comprises first and second controlled fluid sources, the first source communicating with a free end of the piston means, the second source communicating with an opposite side of the piston means, and seaLing means attached to the piston means to isolate the first and second ends whereby the sources are coordinated to generate forces across the piston means in accordance with a desired direction of testing device movement.
Claim 4
Dependent Claim
83 words
The structure of claim 1 wherein the fluid means comprises first and second valve controlled hydraulic pumps, the first valve communicating with a free end of the piston; the second valve communicating with an opposite side of the piston, and sealing means attached to the piston to isolate the first and second ends of the piston, whereby the valves are coordinated to generate a pressure differential across the piston in accordance with a desired displacement of the coupon relative to the pipe line.
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |