Patent US3170579A successfully refreshed from Google Patents.
US3170579A
Expired / Lapsed
US
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Hydraulic control structure
Assignee: Deere and Co
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Filing: 1963-04-05
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Granted: 1965-02-23
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Maurice A Popelier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:23
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/24; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/32; E02F3/36; E02F3/42; E02F3/425; E02F9/20; E02F9/2004; F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/22; Y; Y10; Y10T; Y10T137/00; Y10T137/7069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
IN A POWER IMPLEMENT INCLUDING A BOOM, GROUND-ENGAGING ACCESSORIES ASSOCIATED WITH THE BOOM, HYDRAULIC MEANS FOR RAISING AND LOWERING THE BOOM AND OPERATING THE GROUND-ENGAGING ACCESSORIES, THE COMBINATION THEREWITH OF A HYDRAULIC CONTROL STRUCTURE COMPRISING: A MAIN SUPPORT; VALVE STRUCTURE OPERATIVELY CONNECTED WITH THE HYDRAULIC MEANS CARRIED ON THE SUPPORT AND INCLUDING A MULTIPLE VALVE BANK WITH A SERIES OF ALIGNED RECIPROCAL VALVE CONTROL ELEMENTS, EACH MOVABLE BETWEEN A NEUTRAL ZONE AND AN OPERATING ZONE, EACH ELEMENT HAVING A MEMBER-RECEIVING PORTION THEREON WITH EACH PORTION BEING SUBSTANTIALLY COPLANAR WITH THE PORTIONS OF THE OTHER ELEMENTS WHEN THE ELEMENTS ARE IN THE NEUTRAL ZONE; A LOCKING MEMBER SUPPORTED ON THE SUPPORT FORMOVEMENT TOWARD AND AWAY FROM THE ELEMENTS BETWEEN A LOCKING POSITION IN WHICH THE MEMBER ENGAGES THE MEMBER-RECEIVING PORTIONS OF THE ELEMENTS WHEN THEIR NEUTRAL ZONE AND A REMOTE POSITION IN RESPECT TO THE CONTROL ELEMENTS; MEANS BIASING THE LOCKING MEMBER TO THE REMOTE POSITION; A CAM FIXED TO THE SUPPORT; A KEY-CONTROLLED ROTATABLE FOLLOWER ON THE SUPPORT ENGAGING THE CAM TO EFFECT MOVEMENT OF
Claim 2
Dependent Claim
175 words
IN A POWER IMPLEMENT INCLUDING A BOOM, GROUND-ENGAGING ACCESSORIES ASSOCIATED WITH THE BOOM, HYDRAULIC MEANS FOR RAISING AND LOWERING THE BOOM AND OPERATING THE GROUND-ENGAGING ACCESSORIES, THE COMBINATION THEREWITH OF A HYDRAULIC CONTROL STRUCTURE COMPRISING: A MAIN SUPPORT; VALVE STRUCTURE OPERATIVELY CONNECTED WITH THE HYDRAULIC MEANS CARRIED ON THE SUPPORT AND INCLUDING A MULTIPLE VALVE BANK WITH A SERIES OF ALIGNED RECIPROCAL VALVE CONTROL ELEMENTS, EACH MOVABLE BETWEEN A NEUTRAL ZONE AND AN OPERATING ZONE, EACH ELEMENT HAVING A MEMBER-RECEIVING PORTION THEREON WITH EACH PORTION BEING SUBSTANTIALLY COPLANAR WITH THE PORTIONS OF THE OTHER ELEMENTS WHEN THE ELEMENTS ARE IN THE NEUTRAL ZONE; A LOCKING MEMBER SUPPORTED ON THE SUPPORT FORMOVEMENT TOWARD AND AWAY FROM THE ELEMENTS BETWEEN A LOCKING POSITION IN WHICH THE MEMBER ENGAGES THE MEMBER-RECEIVING PORTIONS OF THE ELEMENTS WHEN THEIR NEUTRAL ZONE AND A REMOTE POSITION IN RESPECT TO THE CONTROL ELEMENTS; MEANS BIASING THE LOCKING MEMBER TO THE REMOTE POSITION; A CAM FIXED TO THE SUPPORT; A KEY-CONTROLLED ROTATABLE FOLLOWER ON THE SUPPORT ENGAGING THE CAM TO EFFECT MOVEMENT OF
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |