US3222865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic apparatus and method
Assignee: Case LLC
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Filing: 1964-11-20
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Granted: 1965-12-14
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Expires: 1984-11-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:47
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/20; E02F9/22; E02F9/2278; E02F9/2292; F; F15; F15B; F15B21/00; F15B21/04; F15B21/041; F15B21/042; F15B21/0423; Y; Y10; Y10S; Y10S60/00; Y10S60/912; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
IN A METHOD OF SUPPLYING HYDRAULIC LIQUID TO THE SYSTEM PUMP OF A HYDRAULIC SYSTEM, THE STEPS OF (1) REMOVING LIQUID FROM A RESERVOIR SPACE AT ATMOSPHERIC PRESSURE, (2) PRESSURIZING SAID LIQUID, (3) FILTERING SAID LIQUID AND (4) COOLING SAID LIQUID, (5) CONFINING THE PRESSURIZED, FILTERED AND CLEANED LIQUID IN A SECOND RESERVOIR SPACE, (6) SUPPLY LIQUID UNDER PRESSURE FROM SAID SECOND RESERVOIR SPACE TO SAID SYSTEM PUMP, AND RECIRCULAT-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |