US3403609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material spreading device
Assignee: CALIFORNIA FRESNO ASPHALT CO
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Filing: 1966-03-01
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Granted: 1968-10-01
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Expires: 1986-03-01
Abstract
No abstract record available.
Inventors
- 👤 Wilbert C Bradshaw
- 👤 Dolph W Ruschhaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:28
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/46; E01C19/002; E01C19/48; E01C19/4866; E01C19/4873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A MATERIAL SPREADING DEVICE, ADAPTED FOR MOVEMENT UPON A SUPPORT SURFACE IN A PREDETERMINED FORWARD DIRECTION OF TRAVEL, COMPRISING AN ELONGATED SPREADER BOX PROVIDING SPACED FORWARD, REARWARD AND OPPOSITE END WALLS DEFINING A MATERIAL COMPARTMENT HAVING AN ELONGATED DISCHARGE OPENING EXTENDED TRANSVERSELY OF SAID DIRECTION OF TRAVEL IN MATERIAL DEPOSITING RELATION TO SAID SUPPORT SURFACE; AN ELONGATED FLEXIBLE STRIKE-OFF BLADE DOWNWARDLY EXTENDED FROM THE SPREADER BOX LONGITUDINALLY IN COEXTENSIVE RELATION WITH SAID OPENING AND TRANSVERSELY IN ARCUATELY REARWARDLY FLEXED WIPING RELATION AGAINST MATERIAL DEPOSITED UPON SUPPORT SURFACE; AND ADJUSTABLE FORCE APPLYING MEANS INCLUDING A PLURALITY OF PIVOTALLY INTERCONNECTED ELONGATED MEMBERS, VERTICAL GUIDE MEANS INDIVIDUALLY MOUNTING SAID ELONGATED MEMBERS IN SUCCESSIVELY LONGITUDINALLY SUBSTANTIALLY ALIGNED RELATION ALONG THE SPREADER BOX FOR ENGAGEMENT WITH SAID STRIKE-OFF BLADE, SAID MEMBERS HAVING TRANSVERSELY ARCUATE SURFACES ENGATED AGAINST THE ARCUATE REARWARDLY FLEXED BLADE; AND FORCE EXERTING MEANS CONNECTED TO SAID ELONGATED MEMBERS COMPRESSIBLY TO URGE THE BLADE TOWARD THE SUPPORT SURFACE TO CONTROL THE DEPTH OF SAID MIXTURE DEPOSITED ON THE SUPPORT SURFACE AND TO MAINTAIN SUCH DEPTH UNIFORMLY COMPLETELY LONGITUDINALLY OF THE SPREADER BOX IN COMFORMING RELATION TO ELEVATIONS AND DEPRESSIONS ENCOUNTERED IN THE SUPPORT SURFACE.
Claim 2
Dependent Claim
191 words
A MATERIAL SPREADING DEVICE, ADAPTED FOR MOVEMENT UPON A SUPPORT SURFACE IN A PREDETERMINED FORWARD DIRECTION OF TRAVEL, COMPRISING AN ELONGATED SPREADER BOX PROVIDING SPACED FORWARD, REARWARD AND OPPOSITE END WALLS DEFINING A MATERIAL COMPARTMENT HAVING AN ELONGATED DISCHARGE OPENING EXTENDED TRANSVERSELY OF SAID DIRECTION OF TRAVEL IN MATERIAL DEPOSITING RELATION TO SAID SUPPORT SURFACE; AN ELONGATED FLEXIBLE STRIKE-OFF BLADE DOWNWARDLY EXTENDED FROM THE SPREADER BOX LONGITUDINALLY IN COEXTENSIVE RELATION WITH SAID OPENING AND TRANSVERSELY IN ARCUATELY REARWARDLY FLEXED WIPING RELATION AGAINST MATERIAL DEPOSITED UPON SUPPORT SURFACE; AND ADJUSTABLE FORCE APPLYING MEANS INCLUDING A PLURALITY OF PIVOTALLY INTERCONNECTED ELONGATED MEMBERS, VERTICAL GUIDE MEANS INDIVIDUALLY MOUNTING SAID ELONGATED MEMBERS IN SUCCESSIVELY LONGITUDINALLY SUBSTANTIALLY ALIGNED RELATION ALONG THE SPREADER BOX FOR ENGAGEMENT WITH SAID STRIKE-OFF BLADE, SAID MEMBERS HAVING TRANSVERSELY ARCUATE SURFACES ENGATED AGAINST THE ARCUATE REARWARDLY FLEXED BLADE; AND FORCE EXERTING MEANS CONNECTED TO SAID ELONGATED MEMBERS COMPRESSIBLY TO URGE THE BLADE TOWARD THE SUPPORT SURFACE TO CONTROL THE DEPTH OF SAID MIXTURE DEPOSITED ON THE SUPPORT SURFACE AND TO MAINTAIN SUCH DEPTH UNIFORMLY COMPLETELY LONGITUDINALLY OF THE SPREADER BOX IN COMFORMING RELATION TO ELEVATIONS AND DEPRESSIONS ENCOUNTERED IN THE SUPPORT SURFACE.
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) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |