Patent US4520673A successfully refreshed from Google Patents.
US4520673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inspection device, especially for steam generator tubes
Assignee: Kraftwerk Union AG
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Filing: 1983-01-28
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Granted: 1985-06-04
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Expires: 2003-01-28
Abstract
Abstract Inspection device, including a probe having a thrust hose for moving the probe, the thrust hose having mutually equidistant holes formed therein along a generatrix line thereof, a feed device having drive wheels for engaging the thrust hose to move the probe, and plugs disposed on at least one of the drive wheels for insertion in the holes.
Inventors
- 👤 Thomas Muller
- 👤 Rainer Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:46
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/26; G01N29/265; G01M; G01M3/00; G01M3/005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
Inspection device, comprising a probe having a flexible thrust hose for moving said probe, said thrust hose having mutually equidistant holes formed therein along a generatrix line thereof, a feed device having two drive wheels for engaging said thrust hose to move said probe, and plugs disposed on said drive wheels for insertion in said holes, said support plugs on one of said drive wheels being circumferentially offset relative to said support plugs on the other of said drive wheels.
Claim 2
Dependent Claim
80 words
Inspection device, comprising a probe having a flexible thrust hose for moving said probe, said thrust hose having mutually equidistant holes formed therein along a generatrix line thereof, a feed device having two drive wheels for engaging said thrust hose to move said probe, and plugs disposed on said drive wheels for insertion in said holes, said support plugs on one of said drive wheels being circumferentially offset relative to said support plugs on the other of said drive wheels.
Claim 3
Dependent Claim
12 words
Inspection device according to claim 1, wherein said plugs have pointed ends.
Claim 4
Dependent Claim
15 words
Inspection device according to claim 1, wherein said holes and plugs have circular cross sections.
Claim 5
Dependent Claim
39 words
Inspection device according to claim 1, wherein said thrust hose has a diameter having a given dimension, and said holes are spaced apart from each other by a distance being at least substantially as large as said given dimension.
Claim 6
Dependent Claim
24 words
Inspection device according to claim 3, wherein said holes each have a diameter being between one-third and one-tenth of the distance between said holes.
Claim 7
Dependent Claim
33 words
Inspection device according to claim 3, wherein said thrust hose has a wall having a given thickness, and said holes each have a diameter being between 0.5 and 2.5 times said given thickness.
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) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |