US3267824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pavement laying apparatus
Assignee: Rex Chainbelt Inc
•
Filing: 1963-05-22
•
Granted: 1966-08-23
•
Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Michael I Hudis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C23/00; E01C23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN APPARATUS FOR DISTRIBUTING AND PLACING NEWLY MIXED CONCRETE IN PLASTIC CONDITION TO FORM A SLAB OF PAVEMENT, A FRAME WORK ADAPTED TO EXTEND OVER AND TO BE ADVANCED ALONG THE SITE OF A PAVEMENT SLAB BEING LAID, A DISTRIBUTNG TROUGH FOR CONCRETE CARRIED BY SAID FRAMEWORK IN POSITION TO EXTEND TRANSVERSELY OF THE SLAB SITE AND PROVIDED ALONG THE BOTTOM THEREOF WITH AN ADJUSTABLE CONCRETE DISCHARGING OPENING, TWO CONVEYOR SCREWS ARRANGED IN END-TO-END ALIGNMENT WITHIN SAID DISTRIBUTING TROUGH FOR MOVING CONCRETE THEREALONG, DRIVING MEANS OPERATIVELY CONNECTED TO EACH OF SAID CONVEYOR SCREWS IN MANNER TO DRIVE EACH SCREW INDEPENDENTLY IN EITHER DIRECTION SELECTIVELY, A FEEDING TROUGH CONNECTED TO AND EXTENDING FORWARDLY FROM EACH END OF SAID DISTRIBUTING TROUGH, A FEEDING SCREW ARRANGED WITHIN EACH OF SAID FEEDING TROUGHS FOR MOVING CONCRETE DEPOSITED THEREIN INTO SAID DISTRIBUTING TROUGH, DRIVING MEANS OPERATIVELY CON-
Claim 2
Dependent Claim
142 words
IN APPARATUS FOR DISTRIBUTING AND PLACING NEWLY MIXED CONCRETE IN PLASTIC CONDITION TO FORM A SLAB OF PAVEMENT, A FRAME WORK ADAPTED TO EXTEND OVER AND TO BE ADVANCED ALONG THE SITE OF A PAVEMENT SLAB BEING LAID, A DISTRIBUTNG TROUGH FOR CONCRETE CARRIED BY SAID FRAMEWORK IN POSITION TO EXTEND TRANSVERSELY OF THE SLAB SITE AND PROVIDED ALONG THE BOTTOM THEREOF WITH AN ADJUSTABLE CONCRETE DISCHARGING OPENING, TWO CONVEYOR SCREWS ARRANGED IN END-TO-END ALIGNMENT WITHIN SAID DISTRIBUTING TROUGH FOR MOVING CONCRETE THEREALONG, DRIVING MEANS OPERATIVELY CONNECTED TO EACH OF SAID CONVEYOR SCREWS IN MANNER TO DRIVE EACH SCREW INDEPENDENTLY IN EITHER DIRECTION SELECTIVELY, A FEEDING TROUGH CONNECTED TO AND EXTENDING FORWARDLY FROM EACH END OF SAID DISTRIBUTING TROUGH, A FEEDING SCREW ARRANGED WITHIN EACH OF SAID FEEDING TROUGHS FOR MOVING CONCRETE DEPOSITED THEREIN INTO SAID DISTRIBUTING TROUGH, DRIVING MEANS OPERATIVELY CON-
References Cited (Backward Citations)
US2011417A
Cited
US2063400A
Cited
US1993656A
Cited
US2106117A
Cited
US2393954A
Cited
US2479800A
Cited
US2663231A
Cited
US2591502A
Cited
US2999432A
Cited
US2953977A
Cited
US2951426A
Cited
US3088383A
Cited
US3043410A
Cited
US3029714A
Cited
US3135178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |