US3760632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure testing machines for tubes
Assignee: CSEPELI TERVEZO INTEZET
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Filing: 1971-12-01
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Granted: 1973-09-25
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Expires: 1991-12-01
Abstract
Abstract In a machine for testing tubes by the application of high pressure liquid to its interior, one tube end is secured to a first cap connected to a stationary sealing head by a permanent seal. The other tube is secured to a second cap in turn connected to a ram mounted in a second sealing head displaceable longitudinally of the tube being tested. The first cap has a liquid inlet connectable to the high pressure supply, and two back pressure valves of opposite opening directions.
Inventors
- 👤 S Illyes
- 👤 O Kapas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:41
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2846
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
A pressure testing machine for testing tubes by the application of high liquid pressures, comprising a first, stationary sealing head for gripping the tube being tested, a first closure cap adapted sealingly to be secured to one end of the said tube, means fixedly mounting said first closure cap on said head, a liquid inlet aperture in the first cap, a permanent seal for connecting the first cap to the stationary sealing head, the dimensions of said permanent seal being independent of the diameter of said tube, means in said stationary sealing head for connecting the said inlet aperture to a source of high pressure liquid, a second sealing head displaceable along the axis of said tube to accommodate the entire length of the tube, a second closure cap adapted seal-ingly to be secured to the other end of said tube thereby sealingly to close said other end of said tube, a movable supporting member connected to the second cap, and pressure application means connecting said second sealing head to the said supporting member to exert in operation a force on said other end of the tube.
Claim 2
Dependent Claim
187 words
A pressure testing machine for testing tubes by the application of high liquid pressures, comprising a first, stationary sealing head for gripping the tube being tested, a first closure cap adapted sealingly to be secured to one end of the said tube, means fixedly mounting said first closure cap on said head, a liquid inlet aperture in the first cap, a permanent seal for connecting the first cap to the stationary sealing head, the dimensions of said permanent seal being independent of the diameter of said tube, means in said stationary sealing head for connecting the said inlet aperture to a source of high pressure liquid, a second sealing head displaceable along the axis of said tube to accommodate the entire length of the tube, a second closure cap adapted seal-ingly to be secured to the other end of said tube thereby sealingly to close said other end of said tube, a movable supporting member connected to the second cap, and pressure application means connecting said second sealing head to the said supporting member to exert in operation a force on said other end of the tube.
Claim 3
Dependent Claim
23 words
A machine as claimed in claim 1 wherein each tube end is threaded and each cap is screwed to the associated tube end.
Claim 4
Dependent Claim
44 words
A machine as claimed in claim 1 wherein two back pressure valves are arranged in the liquid flow path within said first cap between the said inlet aperture and the interior of said tube, the valves being arranged to open in mutually opposite directions.
Claim 5
Dependent Claim
32 words
A machine as claimed in claim 1 wherein said pressure application means is constituted by a ram guided for movement in said second sealing head in the longitudinal direction of the tube.
Claim 6
Dependent Claim
26 words
A machine as claimed in claim 4 wherein lockable rolling elements engaging with a track are provided on said second sealing head for effecting its displacement.
Claim 7
Dependent Claim
40 words
A machine as claimed in claim 1 wherein a groove is provided on said first cap, there being angularly displaceable dogs connected to the stationary sealing head for engaging the groove so as to couple said head to said cap.
Claim 8
Dependent Claim
57 words
A machine as claimed in claim 1 further including, for the support of said tube and for its reMoval from the machine after testing, a tiltable roller track is provided to support the tube, the tilting axis of the track being normal to the longitudinal axis of the tube and an actuating mechanism for the roller track.
Claim 9
Dependent Claim
26 words
A machine as claimed in claim 1 wherein longitudinally extending spindles interconnect the stationary sealing head and the movable support member in a relatively adjustable manner.
Claim 10
Dependent Claim
40 words
A machine as claimed in claim 1 wherein the means in the stationary sealing head for connection to a source of high pressure liquid is connected to the pressure application means by way of a pressure reducer and a pipe.
References Cited (Backward Citations)
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US2671339A
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US2725743A
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US2896445A
Cited
US3001802A
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US3587294A
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US3618366A
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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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |