US3328902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-lifting surfacing machine for canals
Assignee: R A HANSON Co
•
Filing: 1964-12-18
•
Granted: 1967-07-04
•
Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:40
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/06; E02F5/00; E02F5/28; E02F5/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A SELF-LIFTING SURFACE MACHINE FOR CANALS, COMPRISING: A RIGID SUPPORTING FRAME HAVING AT ITS LOWER END SURFACING EQUIPMENT FOR OPERATIONS AT THE BOTTOM SURFACE OF THE CANAL; SIDE SLOPE SURFACING EQUIPMENT EXTENDING OUTWARD FROM SAID FRAME AND PIVOTED THERETO FOR OPERATIONS AT THE SLOPED SIDE SURFACES OF THE CANAL AT EACH SIDE OF SAID BOTTOM SURFACE; GROUND ENGAGING MEANS AT THE OUTER ENDS OF SAID SIDE SLOPE SURFACE EQUIPMENT PIVOTALLY CONNECTED THERETO; PARALLEL ARM ASSEMBLIES PIVOTALLY CONNECTED BETWEEN SAID FRAME AND SAID GROUND ENGAGING MEANS; AND POWERED EXTENSIBLE MEANS PIVOTALLY CONNECTED TO SAID FRAME AT AN ELEVATED POSITION ABOVE SAID SURFACING EQUIPMENT AND TO SAID GROUNG ENGAGING MEANS.
Claim 2
Dependent Claim
108 words
A SELF-LIFTING SURFACE MACHINE FOR CANALS, COMPRISING: A RIGID SUPPORTING FRAME HAVING AT ITS LOWER END SURFACING EQUIPMENT FOR OPERATIONS AT THE BOTTOM SURFACE OF THE CANAL; SIDE SLOPE SURFACING EQUIPMENT EXTENDING OUTWARD FROM SAID FRAME AND PIVOTED THERETO FOR OPERATIONS AT THE SLOPED SIDE SURFACES OF THE CANAL AT EACH SIDE OF SAID BOTTOM SURFACE; GROUND ENGAGING MEANS AT THE OUTER ENDS OF SAID SIDE SLOPE SURFACE EQUIPMENT PIVOTALLY CONNECTED THERETO; PARALLEL ARM ASSEMBLIES PIVOTALLY CONNECTED BETWEEN SAID FRAME AND SAID GROUND ENGAGING MEANS; AND POWERED EXTENSIBLE MEANS PIVOTALLY CONNECTED TO SAID FRAME AT AN ELEVATED POSITION ABOVE SAID SURFACING EQUIPMENT AND TO SAID GROUNG ENGAGING MEANS.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |