Patent US3976092A successfully refreshed from Google Patents.
US3976092A
Expired / Lapsed
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Apparatus for the distribution of concrete
Assignee: Friedrich Wilhelm Schwing GmbH
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Filing: 1975-03-19
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Granted: 1976-08-24
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Expires: 1995-03-19
Abstract
Abstract Apparatus for distributing concrete comprises a jib rotatably mounted on a tower, with a conveyor pipe line mounted on the end thereof so as to be movable about horizontal and vertical axes. The pipe line is formed in several sections which are connected one below the other by pivotal joints with horizontal axes.
Inventors
- 👤 Joachim Coja
- 👤 Karl-Ernest VON Eckardstein
- 👤 Bernhard Meinken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:04
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/02; E04G21/04; E04G21/0418; E04G21/0427; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/8593; Y10T137/8807
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
Concrete distributing apparatus comprising a. a crane tower, b. a rotation track ring on the upper end of said tower, c. an upwardly extending mast on said track ring for rotation about a vertical axis, d. a joint having a horizontal axis on the lower end of said mast, e. a jib attached at its inner end to said joint, f. a mounting at the outer end of said jib, g. an upright support on said mounting for angular movements about a vertical axis, h. a pivotal joint having a horizontal axis on the upper end of said support, i. an articulated sectional pipe line for conveying concrete connected at one end to said pivotal joint, and j. power means for effecting pivotal movement of said pipe sections respectively.
Claim 2
Dependent Claim
129 words
Concrete distributing apparatus comprising a. a crane tower, b. a rotation track ring on the upper end of said tower, c. an upwardly extending mast on said track ring for rotation about a vertical axis, d. a joint having a horizontal axis on the lower end of said mast, e. a jib attached at its inner end to said joint, f. a mounting at the outer end of said jib, g. an upright support on said mounting for angular movements about a vertical axis, h. a pivotal joint having a horizontal axis on the upper end of said support, i. an articulated sectional pipe line for conveying concrete connected at one end to said pivotal joint, and j. power means for effecting pivotal movement of said pipe sections respectively.
Claim 3
Dependent Claim
23 words
Apparatus as claimed in claim 1, comprising a climbing device for raising said track ring thereby to elevate said jib and associated parts.
Claim 4
Dependent Claim
36 words
Apparatus as claimed in claim 1, comprising a second jib on the opposite side of said crane tower to counter-balance said first jib, said second jib being similar in structure and equipment as said first jib.
References Cited (Backward Citations)
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US3114392A
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US3459222A
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US3572380A
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US3685543A
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US3707990A
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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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |