US3308765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump construction
Assignee: Individual
•
Filing: 1965-05-21
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Granted: 1967-03-14
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Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Mutschler Erich
- 👤 Reibl Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:20
CPC Classifications
F; F04; F04B; F04B53/00; B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/481; F04B43/00; F04B43/02; F04B43/025; F04B43/026; F04B43/04; F04B49/00; F04B49/22; F04B49/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A DIAPHRAGM PUMP WITH BUILT-IN ELECTRIC MOTOR, ESPECIALLY AS SUPPLY PUMP FOR WINDSHIELD WIPER INSTALLATIONS IN MOTOR VEHICLES, COMPRISING: PUMP MEANS HAVING PUMP CHAMBER MEANS, DIAPHRAGM MEANS IN SAID CHAMBER MEANS, PISTON MEANS OPERATIVELY CONNECTED WITH SAID DIAPHRAGM MEANS, AND ELECTRIC DRIVE MEANS FOR DRIVING SAID PISTON MEANS, SAID PUMP MEANS FURTHER INCLUDING A PLATE-LIKE STRUCTURAL ELEMENT PROVIDED WITH SUCTION AND PRESSURE CHANNELS WHICH ARE OPERATIVELY CONNECTED WITH THE PUMP CHAMBER MEANS, AND A PRESSURE EQUALIZATION CHANNEL PROVIDED IN SAID PLATE-LIKE STRUCTURAL ELEMENT, SAID PRESSURE EQUALIZATION CHANNEL OFFERING EFFECTIVELY A FLOW RESISTANCE WHICH IS A MULTIPLE OF THE FLOW RESISTANCE AT ONE OF THE SUCTION AND PRESSURE CHANNELS, ALL OF SAID CHANNELS BEING CONSTITUTED BY RECESSES IN SAID PLATE-LIKE STRUCTURAL ELEMENT OPEN AT LEAST ON ONE SIDE, AND COMMON COVER PLATE MEANS CLOSING OFF SAID CHANNEL MEANS.
Claim 2
Dependent Claim
137 words
A DIAPHRAGM PUMP WITH BUILT-IN ELECTRIC MOTOR, ESPECIALLY AS SUPPLY PUMP FOR WINDSHIELD WIPER INSTALLATIONS IN MOTOR VEHICLES, COMPRISING: PUMP MEANS HAVING PUMP CHAMBER MEANS, DIAPHRAGM MEANS IN SAID CHAMBER MEANS, PISTON MEANS OPERATIVELY CONNECTED WITH SAID DIAPHRAGM MEANS, AND ELECTRIC DRIVE MEANS FOR DRIVING SAID PISTON MEANS, SAID PUMP MEANS FURTHER INCLUDING A PLATE-LIKE STRUCTURAL ELEMENT PROVIDED WITH SUCTION AND PRESSURE CHANNELS WHICH ARE OPERATIVELY CONNECTED WITH THE PUMP CHAMBER MEANS, AND A PRESSURE EQUALIZATION CHANNEL PROVIDED IN SAID PLATE-LIKE STRUCTURAL ELEMENT, SAID PRESSURE EQUALIZATION CHANNEL OFFERING EFFECTIVELY A FLOW RESISTANCE WHICH IS A MULTIPLE OF THE FLOW RESISTANCE AT ONE OF THE SUCTION AND PRESSURE CHANNELS, ALL OF SAID CHANNELS BEING CONSTITUTED BY RECESSES IN SAID PLATE-LIKE STRUCTURAL ELEMENT OPEN AT LEAST ON ONE SIDE, AND COMMON COVER PLATE MEANS CLOSING OFF SAID CHANNEL MEANS.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |