Patent DE156269C successfully refreshed from Google Patents.
US3134508A
Expired / Lapsed
US
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Fluid metering method and apparatus
Assignee: Individual
•
Filing: 1960-10-20
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Granted: 1964-05-26
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Expires: 1980-10-20
Abstract
No abstract record available.
Inventors
- 👤 Christian L Bayer
- 👤 Enholm Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:46
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/02; F04B7/0266; F04B43/00; F04B43/08; F04B43/10; F04B43/107; F04B49/00; F04B49/12; F04B7/0003; F04B7/0015; F04B7/0076; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/117; G; G01; G01F; G01F11/00; G01F11/02; F04B1/00; F04B1/04; F04B1/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
IN A METERING DEVICE, IN COMBINATION, AN HYDRAULICALLY OPERABLE RECIPROCATING METERING PUMP, FIRST AND SECOND MECHANICAL STOPS ADAPTED TO DEFINE POSITIVELY THE OPERATIVE STROKE OF SAID METERING PUMP, A RECIPROCATING MASTER HYDRAULIC PUMP, MEANS CONNECTING SAID PUMPS IN A CLOSED HYDRAULIC SYSTEM, A VOLUME OF HYDRAULIC FLUID SUBSTANTIALLY FILLING SAID SYSTEM AND ADAPTED TO TRANSMIT ACTUATING DISPLACEMENTS FROM SAID MASTER PUMP TO SAID METERING PUMP, MEANS OPERABLE FROM OUTSIDE SAID CLOSED SYSTEM TO ALTER THE SPACING OF SAID POSITIVE TERMINAL STOPS FOR SELECTIVELY ADJUSTING SAID STROKE OF SAID METERING PUMP, AND MEANS IN DIRECT COMMUNICATION WITH SAID VOLUME OF HYDRAULIC FLUID TO COMPENSATE FOR DIFFERENCES IN OPERATIONAL DISPLACEMENT BETWEEN SAID MASTER PUMP AND SAID STROKE-ADJUSTED METERING PUMP.
References Cited (Backward Citations)
US2957484A
Cited
US2737978A
Cited
US2539615A
Cited
US2778534A
Cited
US2800152A
Cited
US2840274A
Cited
US2965114A
Cited
US2963202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |