US3224341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control apparatus
Assignee: Individual
•
Filing: 1962-11-09
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Granted: 1965-12-21
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Expires: 1982-11-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Bean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:16
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; B23Q5/266; B23Q5/268; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
131 words
HYDRAULIC APPARATUS FOR DRIVING A MOVABLE MEMBER BY APPLYING FLUID UNDER PRESSURE SELECTIVELY IN EITHER ONE OF A PAIR OF FLUID DELIVERY AND RETURN CONDUITS, WHILE DELIVERING FLUID FROM THE OTHER OF SAID CONDUITS TO A DISCHARGE RECEIVER, AT A REGULATED RATE, TO DETERMINE THE RATE OF SPEED AT WHICH THE MEMBER IS DRIVEN, COMPRISING AN AXIALLY SHIFTABLE VALVE STEM DISPOSABLE SELECTIVELY IN POSITION TO BLOCK FLUID FLOW, FROM A SUPPLY SOURCE OF FLUID UNDER PRESSURE, TO BOTH OF SAID CONDUITS, AND IN POSITION TO DELIVER FLUID UNDER PRESSURE TO EITHER OF SAID CONDUITS, WHILE THE OTHER IS CONNECTED WITH SAID RECEIVER, MEANS TO YIELDINGLY SUPPORT SAID VALVE IN ANY SELECTED ONE OF ITS SEVERAL RELATIVELY SHIFTED POSITIONS INCLUDING A MOUNTING MEMBER SHIFTABLE ON AN AXIS PARALLEL TO AND SPACED FROM
References Cited (Backward Citations)
US2200396A
Cited
US2331108A
Cited
US2320905A
Cited
US2573761A
Cited
US2552848A
Cited
US2610614A
Cited
US2745385A
Cited
US2893354A
Cited
US3015309A
Cited
US2971535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |