US3280711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extruding curbing over anchoring pins
Assignee: Renner Co
•
Filing: 1963-12-26
•
Granted: 1966-10-25
•
Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:19
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4886; E01C19/4893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN A CURB FORMING APPARATUS HAVING A SUPPORTING FRAME, GROUND ENGAGING WHEELS ON SAID FRAME, ROTARY DRIVE MEANS ON SAID FRAME, A HOPPER HAVING A DISCHARGE OPENING AT THE BOTTOM THEREOF DISPOSED IN SAID FRAME, AND A SCREW HOUSING MOUNTED ON SAID FRAME; A COMPACTION SCREW IN SAID SCREW HOUSING, AND MECHANICAL DRIVING MEANS FOR CONNECTING SAID COMPACTING SCREW WITH SAID ROTARY DRIVE MEANS, A COMPACTION CHAMBER ATTACHED TO AND COMMUNICATING WITH SAID SCREW HOUSING, A CURB FORM ATTACHED TO AND COMMUNICATING WITH SAID COMPACTION CHAMBER, SAID COMPACTION CHAMBER HAVING A FIRST PORTION POSITIONED HORIZONTALLY WITH ITS AXIAL CENTER LINE LYING ON THE AXIS OF SAID COMPACTION SCREW AND A SECOND ANGULARLY DISPOSED PORTION JOINED THERETO AT AN ANGLE OF APPROXIMATELY 62* THEREFROM FOR DELIVERING MATERIAL BEING COMPACTED THEREINTO A LOCATION OFF CENTER WITH RESPECT TO THE AXIAL LINE OF SAID SCREW HOUSING AND COMPACTION SCREW, SAID COMPACTION CHAMBER HAVING ON OPENING IN THE ANGULARLY DISPOSED POSITION THEREOF AND A MOVABLE CLOSURE NORMALLY CLOSING SAID OPENING.
Claim 2
Dependent Claim
166 words
IN A CURB FORMING APPARATUS HAVING A SUPPORTING FRAME, GROUND ENGAGING WHEELS ON SAID FRAME, ROTARY DRIVE MEANS ON SAID FRAME, A HOPPER HAVING A DISCHARGE OPENING AT THE BOTTOM THEREOF DISPOSED IN SAID FRAME, AND A SCREW HOUSING MOUNTED ON SAID FRAME; A COMPACTION SCREW IN SAID SCREW HOUSING, AND MECHANICAL DRIVING MEANS FOR CONNECTING SAID COMPACTING SCREW WITH SAID ROTARY DRIVE MEANS, A COMPACTION CHAMBER ATTACHED TO AND COMMUNICATING WITH SAID SCREW HOUSING, A CURB FORM ATTACHED TO AND COMMUNICATING WITH SAID COMPACTION CHAMBER, SAID COMPACTION CHAMBER HAVING A FIRST PORTION POSITIONED HORIZONTALLY WITH ITS AXIAL CENTER LINE LYING ON THE AXIS OF SAID COMPACTION SCREW AND A SECOND ANGULARLY DISPOSED PORTION JOINED THERETO AT AN ANGLE OF APPROXIMATELY 62* THEREFROM FOR DELIVERING MATERIAL BEING COMPACTED THEREINTO A LOCATION OFF CENTER WITH RESPECT TO THE AXIAL LINE OF SAID SCREW HOUSING AND COMPACTION SCREW, SAID COMPACTION CHAMBER HAVING ON OPENING IN THE ANGULARLY DISPOSED POSITION THEREOF AND A MOVABLE CLOSURE NORMALLY CLOSING SAID OPENING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |