Patent US3355825A successfully refreshed from Google Patents.
US3355825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade position lock and release system for road scrapers
Assignee: Root Spring Scraper Co
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Filing: 1965-05-12
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Granted: 1967-12-05
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Weeks Warren Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:35
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7636; E02F3/765
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
LOCK AND RELEASE MEANS FOR A ROAD SCRAPER HAVING A SUPPORTING SECTOR PLATE, A HORIZONTALLY SWINGABLE BLADE SUPPORT BEAM AND A VERTICALY SWINGABLE BLADE MOUNTED ON THE BEAM COMPRISING, A SPRINGABLE ELEMENT CARRIED BY SA D BEAM, A LOCK PIN CARRIED BY SAID SPRINGABLE ELEMENT WITH PROJECTABLE THEREBY INTO LOCKING ENGAGEMENT WITH SAID SECTOR PLATE, A GUIDE AND KEEPER MEANS FOR SAID LOCKING PIN FIXED RELATIVE TO SAID BEAM, AND SPRING RETRACTING ELEMENT MOVABLY MOUNTED ON SAID BEAM AND ENGAGEABLE BETWEEN SAID BLADE IN THE RAISED POSITION OF SAID BLADE AND SAID SPRINGABLE ELEMENT TO RETRACT THE SPRINGABLE ELEMENT AND SAID PIN FOR ENGAGEMENT WITH SAID SECTOR PLATE.
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |