Patent US3335672A successfully refreshed from Google Patents.
US3335672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple cartridge pumping apparatus
Assignee: MILL AND MINE SERVICES Inc A CORP OF
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Filing: 1965-01-22
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Granted: 1967-08-15
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Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:40
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/14; F04B1/16; F04B1/122; F04B1/124; F04B1/126; F04B1/141; F04B1/143; F04B1/145; F04B23/00; F04B23/04; F04B23/06; F04B49/00; F04B49/08; F04B49/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A HYDRAULIC MACHINE THE COMBINATION OF A HOUSING MEANS INCLUDING A HOUSING INLET AND HOUSING OUTLET PORTS AND A MAIN CONTROL INLET PORT; A PLURALITY OF PUMPING CARTRIDGES AXIALLY SLIDEABLY MOUNTED IN SAID HOUSING, EACH OF SAID CARTRIDGES INCLUDING A PLURALITY OF CYLINDERS, PISTONS MOUNTED FOR RECIPROCATION IN SAID CYLINDERS, AND CYLINDER INLET AND OUTLET PORTS; CONTROL CYLINDER AND PISTON MEANS MOUNTED IN SAID HOUSING FOR AXIALLY SHIFTING EACH OF SAID CYLINDER INLET PORTS RELATIVE TO SAID PISTONS; FIRST PASSAGE MEANS CONNECTING SAID CARTRIDGE INLET PORTS WITH SAID HOUSING INLET PORT; SECOND PASSAGE MEANS CONNECTING SAID CARTRIDGE OUTLET PORT WITH SAID HOUSING OUTLET PORT; THIRD PASSAGE MEANS CONNECTING EACH OF SAID CONTROL CYLINDERS TO SAID MAIN CONTROL INLET PORT INCLUDING A CENTRALLY DISPOSED CONTROL DISTRIBUTING CHAMBER IN SAID HOUSING FOR RADIAL DISTRIBUTON OF CONTROL FLUD TO SAID CONTROL CYLINDERS.
Claim 2
Dependent Claim
140 words
IN A HYDRAULIC MACHINE THE COMBINATION OF A HOUSING MEANS INCLUDING A HOUSING INLET AND HOUSING OUTLET PORTS AND A MAIN CONTROL INLET PORT; A PLURALITY OF PUMPING CARTRIDGES AXIALLY SLIDEABLY MOUNTED IN SAID HOUSING, EACH OF SAID CARTRIDGES INCLUDING A PLURALITY OF CYLINDERS, PISTONS MOUNTED FOR RECIPROCATION IN SAID CYLINDERS, AND CYLINDER INLET AND OUTLET PORTS; CONTROL CYLINDER AND PISTON MEANS MOUNTED IN SAID HOUSING FOR AXIALLY SHIFTING EACH OF SAID CYLINDER INLET PORTS RELATIVE TO SAID PISTONS; FIRST PASSAGE MEANS CONNECTING SAID CARTRIDGE INLET PORTS WITH SAID HOUSING INLET PORT; SECOND PASSAGE MEANS CONNECTING SAID CARTRIDGE OUTLET PORT WITH SAID HOUSING OUTLET PORT; THIRD PASSAGE MEANS CONNECTING EACH OF SAID CONTROL CYLINDERS TO SAID MAIN CONTROL INLET PORT INCLUDING A CENTRALLY DISPOSED CONTROL DISTRIBUTING CHAMBER IN SAID HOUSING FOR RADIAL DISTRIBUTON OF CONTROL FLUD TO SAID CONTROL CYLINDERS.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |