US3100423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield wiper
Assignee: Trico Products Corp
•
Filing: 1961-03-23
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Granted: 1963-08-13
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Expires: 1981-03-23
Abstract
No abstract record available.
Inventors
- 👤 Alba Anthony R D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:32
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/04; B60S1/06; B60S1/12; B60S1/125; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2617; Y10T137/7722; Y10T137/7781; Y10T137/7837; Y10T137/7876; Y10T74/00; Y10T74/18; Y10T74/18856
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
AN HYDRAULIC WINDSHIELD WIPER MOTOR COMPRISING A HOUSING, A PISTON MOUNTED FOR REVERSIBLE MOVEMENT IN SAID HOUSING, SAID PISTON DIVIDING A PORTION OF SAID HOUSING INTO FIRST AND SECOND CHAMBERS, FIRST CONDUCTOR MEANS IN COMMUNICATION WITH SAID FIRST CHAMBER AND SECOND CONDUIT MEANS IN COMMUNICATION WITH SAID SECOND CHAMBER, A FLUID INLET CONDUIT IN SAID HOUSING, A SHUTTLE VALVE FOR ALTERNATELY PLACING SAID FIRST AND SECOND CHAMBERS IN COMMUNICATION WITH SAID FLUID INLET CONDUIT THROUGH SAID FIRST AND SECOND CONDUIT MEANS, RESPECTIVELY, WHILE PERMITTING THE FLUID IN THE OTHER OF SAID CHAMBERS TO BE EXHAUSTED, PILOT VALVE MEANS OPERABLE IN SYNCHRONISM WITH MOVEMENT OF SAID PISTON FOR CAUSING SAID SHUTTLE VALVE TO MOVE BACK AND FORTH TO EFFECT SAID ALTERNATE COMMUNICATION OF SAID FLUID INLET CONDUIT WITH SAID FIRST AND SECOND CHAMBERS, CONTROL MEANS FOR SETTING THE SPEED OF SAID MOTOR, AND VARIABLE PRESSURE REGULATING MEANS RESPONSIVE TO SAID CONTROL MEANS AND TO EXCESSIVE MOTOR PRESSURE FOR CAUSING THE MAGNITUDE OF THE HYDRAULIC PRESSURE IN SAID FLUID INLET CONDUIT TO VARY DIRECTLY WITH THE SPEED SETTING OF SAID MOTOR.
Claim 2
Dependent Claim
179 words
AN HYDRAULIC WINDSHIELD WIPER MOTOR COMPRISING A HOUSING, A PISTON MOUNTED FOR REVERSIBLE MOVEMENT IN SAID HOUSING, SAID PISTON DIVIDING A PORTION OF SAID HOUSING INTO FIRST AND SECOND CHAMBERS, FIRST CONDUCTOR MEANS IN COMMUNICATION WITH SAID FIRST CHAMBER AND SECOND CONDUIT MEANS IN COMMUNICATION WITH SAID SECOND CHAMBER, A FLUID INLET CONDUIT IN SAID HOUSING, A SHUTTLE VALVE FOR ALTERNATELY PLACING SAID FIRST AND SECOND CHAMBERS IN COMMUNICATION WITH SAID FLUID INLET CONDUIT THROUGH SAID FIRST AND SECOND CONDUIT MEANS, RESPECTIVELY, WHILE PERMITTING THE FLUID IN THE OTHER OF SAID CHAMBERS TO BE EXHAUSTED, PILOT VALVE MEANS OPERABLE IN SYNCHRONISM WITH MOVEMENT OF SAID PISTON FOR CAUSING SAID SHUTTLE VALVE TO MOVE BACK AND FORTH TO EFFECT SAID ALTERNATE COMMUNICATION OF SAID FLUID INLET CONDUIT WITH SAID FIRST AND SECOND CHAMBERS, CONTROL MEANS FOR SETTING THE SPEED OF SAID MOTOR, AND VARIABLE PRESSURE REGULATING MEANS RESPONSIVE TO SAID CONTROL MEANS AND TO EXCESSIVE MOTOR PRESSURE FOR CAUSING THE MAGNITUDE OF THE HYDRAULIC PRESSURE IN SAID FLUID INLET CONDUIT TO VARY DIRECTLY WITH THE SPEED SETTING OF SAID MOTOR.
References Cited (Backward Citations)
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Cited
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US2890715A
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US2942585A
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US2970336A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |