Patent US4221534A successfully refreshed from Google Patents.
US4221534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for feeding tubes for heat exchangers
Assignee: Kraftwerk Union AG
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Filing: 1979-04-30
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Granted: 1980-09-09
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Expires: 1999-04-30
Abstract
Abstract Device for feeding tubes into a tube-insertion machine for heat exchangers such as steam condensers, especially, includes vertically disposed flexible belt means formed with respective holders for the tubes, the flexible belt means and the holders connecting the tubes to one another in mutually parallel disposition.
Inventors
- 👤 Alexander Rethy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:53
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/12; B65G1/127; B23; B23P; B23P19/00; B23P19/02; B23P19/022; B65G1/0442; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/53; Y10T29/53113
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
Device for feeding elongated tubes into a tube-insertion machine for heat exchangers such as steam condensers, especially, comprising a pair of lifting and wind-up devices mutually spaced horizontally and in horizontal alignment with the tube-insertion machine, a tube receptacle extending between and carried in common by said pair of lifting and wind-up devices, a pair of flexible belts formed, respectively, with a plurality of holders for tubes received in said receptacle for connecting the tubes to one another in mutually parallel disposition, said pair of flexible belts being respectively liftable so as to be vertically disposed and stepwise windable upwardly by said pair of lifting and wind-up devices so as to align the mutually parallel elongated tubes respectively with the tube-insertion machine whereby the tubes may be withdrawn by the tube-insertion machine from the respective holders.
Claim 2
Dependent Claim
136 words
Device for feeding elongated tubes into a tube-insertion machine for heat exchangers such as steam condensers, especially, comprising a pair of lifting and wind-up devices mutually spaced horizontally and in horizontal alignment with the tube-insertion machine, a tube receptacle extending between and carried in common by said pair of lifting and wind-up devices, a pair of flexible belts formed, respectively, with a plurality of holders for tubes received in said receptacle for connecting the tubes to one another in mutually parallel disposition, said pair of flexible belts being respectively liftable so as to be vertically disposed and stepwise windable upwardly by said pair of lifting and wind-up devices so as to align the mutually parallel elongated tubes respectively with the tube-insertion machine whereby the tubes may be withdrawn by the tube-insertion machine from the respective holders.
Claim 3
Dependent Claim
14 words
Device according to claim 1 wherein said holders surround the respective tubes with clearance.
Claim 4
Dependent Claim
24 words
Device according to claim 1 wherein said belts are formed of alternatingly flat sections and ring-shaped sections for lateral insertion of respective tubes therein.
Claim 5
Dependent Claim
44 words
Device according to claim 1 wherein at least one of said belts comprise two belt lengths wave-shaped in sections, said two belt lengths being connected to one another with the wave-shaped sections thereof juxtaposed to form respective circular openings for receiving the tubes therein.
Claim 6
Dependent Claim
46 words
Device according to claim 1 wherein at least one of said belts comprise a flat belt length and a belt length wave-shaped in sections, said belt lengths being flatly disposed on one another so as to close said wave-shaped sections, wherein the tubes are, respectively, receivable.
Claim 7
Dependent Claim
47 words
Device according to claim 1 wherein at least one of said belts comprise a flat belt length and substantially U-shaped brackets fastened at spaced intervals from one another to said flat belt length, said brackets having outwardly extending, free legs between which the tubes are, respectively, clamped.
Claim 8
Dependent Claim
24 words
Device according to claim 6 wherein the free legs between which each of the respective tubes are clamped are, respectively, from mutually adjacent brackets.
References Cited (Backward Citations)
DE298428C
Cited
US616441A
Cited
DE957717C
Cited
US1925502A
Cited
US2186302A
Cited
US2503518A
Cited
US2864938A
Cited
US3574917A
Cited
US3611656A
Cited
US3807675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |