Patent US3301150A successfully refreshed from Google Patents.
US3301150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding and distrubuting concrete in slipforms
Assignee: RA Hanson Co Inc
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Filing: 1964-07-13
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Granted: 1967-01-31
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:10
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/18; E01C19/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
AN APPARATUS FOR FEEDING AND DISTRIBUTING CONCRETE ON SLOPES, COMPRISING: A SLIPFORM FRAME EXTENDING TRANSVERSELY ACROSS A SLOPE FACE, SAID FRAME HAVING A FORWARD UPRIGHT WALL AND A REARWARDLY SPACED SCREED JOINED TO SAID UPRIGHT WALL BY LONGITUDINAL BRACING MEMBERS; CONCRETE RECEIVING MEANS ON SAID FRAMEWORK TO DIRECT INCOMING CONCRETE BETWEEN SAID FORWARD UPRIGHT WALL AND SAID SCREED; SPROCKET MEANS ROTATABLY MOUNTED BETWEEN SAID FORWARD UPRIGHT WALL AND SAID SCREED FOR MOTION ABOUT PARALLEL LONGITUDINAL AXES LOCATED RESPECTIVELY AT THE TRANSVERSE ENDS OF SAID FRAME; ENDLESS CHAIN MEANS ENTRAINED ABOUT SAID SPROCKET MEANS AND EXTENDING ALONG THE TRANSVERSE WIDTH OF SAID FRAME IN UPPER AND LOWER FLIGHTS; AND A PLURALITY OF TRANSVERSE OPEN FACED PADDLES CARRIED BY SAID CHAIN MEANS IN PARALLEL LONGITUDINAL POSITIONS FOR PUSHING CONCRETE TRANSVERSELY UPWARD ALONG THE SLOPE RELATIVE TO SAID FRAME.
Claim 2
Independent Claim
136 words
AN APPARATUS FOR FEEDING AND DISTRIBUTING CONCRETE ON SLOPES, COMPRISING: A SLIPFORM FRAME EXTENDING TRANSVERSELY ACROSS A SLOPE FACE, SAID FRAME HAVING A FORWARD UPRIGHT WALL AND A REARWARDLY SPACED SCREED JOINED TO SAID UPRIGHT WALL BY LONGITUDINAL BRACING MEMBERS; CONCRETE RECEIVING MEANS ON SAID FRAMEWORK TO DIRECT INCOMING CONCRETE BETWEEN SAID FORWARD UPRIGHT WALL AND SAID SCREED; SPROCKET MEANS ROTATABLY MOUNTED BETWEEN SAID FORWARD UPRIGHT WALL AND SAID SCREED FOR MOTION ABOUT PARALLEL LONGITUDINAL AXES LOCATED RESPECTIVELY AT THE TRANSVERSE ENDS OF SAID FRAME; ENDLESS CHAIN MEANS ENTRAINED ABOUT SAID SPROCKET MEANS AND EXTENDING ALONG THE TRANSVERSE WIDTH OF SAID FRAME IN UPPER AND LOWER FLIGHTS; AND A PLURALITY OF TRANSVERSE OPEN FACED PADDLES CARRIED BY SAID CHAIN MEANS IN PARALLEL LONGITUDINAL POSITIONS FOR PUSHING CONCRETE TRANSVERSELY UPWARD ALONG THE SLOPE RELATIVE TO SAID FRAME.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |