US4424616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning line for steel pipes
Assignee: JFE Engineering Corp
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Filing: 1981-08-11
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Granted: 1984-01-10
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Expires: 2001-08-11
Abstract
Abstract A conditioning line for steel pipes in which steel pipes are transversely transferred to effect the end processing thread cutting, thread inspection, hydrostatic testing, etc., on the steel pipes. With a view to increasing the efficiency of the conditioning operations, a reprocessing line is arranged to run parallel to a main line such that the steel pipes rejected on the main line are automatically transferred to the reprocessing line where the rejected steel pipes are reprocessed and automatically transferred back to the main line.
Inventors
- 👤 Masachika Numano
- 👤 Shinji Akita
- 👤 Minoru Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/22; B21; B21C; B21C51/00; B23Q; B23Q7/00; B23Q7/12; B23Q7/14; B65; B65G; B65G37/00; B65G37/02; B65G47/00; B65G47/34; B65G47/46; B65G47/51; B65G47/5104; B65G47/5109; B65G47/5145; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5196; Y10T29/5199; Y10T408/00; Y10T408/05; Y10T409/00; Y10T409/30; Y10T409/303864
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
119 words
A steel pipe conditioning line comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other; means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; and said main line of each said closed loop includes at least one pair of thread cutting means and at least one thread inspecting means.
Claim 2
Dependent Claim
119 words
A steel pipe conditioning line comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other; means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; and said main line of each said closed loop includes at least one pair of thread cutting means and at least one thread inspecting means.
Claim 3
Dependent Claim
32 words
A steel pipe conditioning line as recited in claim 1, wherein: said reprocessing means of each said closed loop includes at least one reprocessing means and at least one high-speed transfer means.
Claim 4
Dependent Claim
29 words
A steel pipe conditioning line as recited in claim 7, wherein: said high-speed transfer means includes at least one high-speed movable carriage and at least one pair of rails.
Claim 5
Dependent Claim
39 words
A steel pipe conditioning line as recited in claim 1, wherein: said one or more of said closed loops consists of at least one kickout means and at least one kickin means connecting main line and said reprocessing line.
Claim 6
Dependent Claim
118 words
A steel pipe conditioning line comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other, means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; and said main line of each said closed loop including at least one pair of end facing means and at least one testing means.
Claim 7
Dependent Claim
118 words
A steel pipe conditioning line comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other, means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; and said main line of each said closed loop including at least one pair of end facing means and at least one testing means.
Claim 8
Dependent Claim
40 words
A steel pipe conditioning line as recited in claim 5, wherein: said one or more of said closed loops consists of at least one kickout means and at least one kickin means connecting said main line and said reprocessing line.
Claim 9
Dependent Claim
32 words
A steel pipe conditioning line as recited in claim 5, wherein: said reprocessing means of each said closed loop includes at least one reprocessing means and at least one high-speed transfer means.
Claim 10
Dependent Claim
29 words
A steel pipe conditioning line as recited in claim 7, wherein: said high-speed transfer means includes at least one high-speed movable carriage and at least one pair of rails.
Claim 11
Dependent Claim
144 words
A steel pipe conditioning line, comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other; means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; said main line of said closed loop consists of at least one pair of processing means and at least one pair of testing means; and said main line of each of said closed loop includes at least one pair of thread cutting means and at least one thread inspecting means.
Claim 12
Dependent Claim
144 words
A steel pipe conditioning line, comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other; means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; said main line of said closed loop consists of at least one pair of processing means and at least one pair of testing means; and said main line of each of said closed loop includes at least one pair of thread cutting means and at least one thread inspecting means.
Claim 13
Dependent Claim
142 words
A steel pipe conditioning line, comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other; means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; said main line of said closed loop consists of at least one pair of processing means and at least one pair of testing means; and said main line of each said closed loop including at least one pair of end facing means and at least one testing means.
Claim 14
Dependent Claim
142 words
A steel pipe conditioning line, comprising: at least one main line; at least one reprocessing line for rejected steel pipe; said main line and said reprocessing line being arranged parallel to each other; means to automatically transfer said rejected steel pipe from said main line to said reprocessing line; means for reprocessing said rejected steel pipe on said reprocessing line; means for automatically transferring said reprocessed steel pipe back to said main line; one or more closed loops comprised of at least one main line and at least one reprocessing line arranged in series; said main line of said closed loop consists of at least one pair of processing means and at least one pair of testing means; and said main line of each said closed loop including at least one pair of end facing means and at least one testing means.
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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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |