US3181441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Sundstrand Corp
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Filing: 1961-10-12
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Granted: 1965-05-04
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Expires: 1981-10-12
Abstract
No abstract record available.
Inventors
- 👤 Richard C Flom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:07
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4866; E01C19/4873; E01C19/004; E01C19/008
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
175 words
CONTROL APPARATUS FOR USE WITH A FLOATING SCREED PAVING MACHINE, IN WHICH THE SCREED IS TOWED BEHIND A PROPULSION UNIT AND THE HEIGHT AND SLOPE PROFILE OF A RESULTING ROAD SURFACE IS CONTROLLED BY INDEPENDENTLY CONTROLLING THE ANGLE OF ATTACK OF THE OPPOSITE ENDS OF THE SCREED, THE APPARATUS COMPRISING; HEIGHT SENSING MEANS VERTICALLY MOVABLY MOUNTED IN RELATION TO THE PAVING MACHINE AND CARRIED THEREBY, CONTROL MEANS HAVING AN INPUT CONNECTED TO BE CONTROLLED BY SAID HEIGHT SENSING MEANS AND HAVING AN OUTPUT CONNECTED TO CONTROL THE ANGLE AT ATTACK OF ONE END OF THE SCREED AND TO CONCURRENTLY MOVE SAID HEIGHT SENSING MEANS VERTICALLY RELATIVE TO THE PAVING MACHINE; SLOPE SENSING MEANS MOUNTED IN RELATION TO THE SCREED TO BE RESPONSIVE TO THE TRANSVERSE SLOPE OF THE SCREED AND TO THE ANGLE OF ATTACK OF THE OPPOSITE ENDS OF THE SCREED, AND CONTROL MEANS HAVING AN INPUT CONNECTED TO BE CONTROLLED BY SAID SLOPE SENSING MEANS AND HAVING AN OUTPUT CONNECTED TO CONTROL THE ANGLE OF ATTACK OF THE OTHER END OF THE SCREED.
References Cited (Backward Citations)
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US2491275A
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US2922345A
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US3029716A
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US3111070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |