US2825666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of and apparatus for washing dishes
Assignee: General Electric Co
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Filing: 1955-05-12
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Granted: 1958-03-04
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Expires: 1975-05-12
Abstract
No abstract record available.
Inventors
- 👤 Edgar S Stoddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/469; A; A47; A47L; A47L15/00; A47L15/0002; A47L15/02; A47L15/06; A47L15/42; A47L15/4229; C02F1/42; C02F1/461; C02F1/46104; C02F1/4618; A47L2601/00; A47L2601/18; C02F1/4602; C02F1/4604; C02F1/4693; C02F2001/427; C02F1/46109; C02F2001/46152; C02F2001/46185; C02F2201/00; C02F2201/002; C02F2201/003; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611; C02F2201/46115; C02F2201/4612; C02F2201/46145; C02F2201/4615
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
THE METHOD OF WASHING DISHES COMPRISING PROVIDING RAW WATER HAVING DISSOLVED THEREIN SMALL AMOUNTS OF METAL SALTS, PRODUCING A WASH SOLUTION FROM A FIRST PORTION OF SAID RAW WATER BY DISSOLVING THEREIN A QUANTITY OF DETERGENT, SUBJECTING THE DISHES TO A WASHING ACTION WITH SAID WASH SOLUTION, PRODUCING A RINSE SOLUTION FROM A SECOND PORTION OF SAID RAW WATER BY PREFERENTIALLY EXTRACTING THEREFROM THE CATIONS WITH RESPECT TO THE ANIONS OF SAID DISSOLVED METAL SALTS WITH THE CONSEQUENT SIMULTANEOUS REDUCTION OF THE CONCENTRATION OF SAID CATIONS THEREIN AND OF THE PH THEREOF, AND THEN SUBJECTING THE DISHES TO A RINSING ACTION WITH SAID RINSE SOLUTION.
Claim 2
Independent Claim
105 words
THE METHOD OF WASHING DISHES COMPRISING PROVIDING RAW WATER HAVING DISSOLVED THEREIN SMALL AMOUNTS OF METAL SALTS, PRODUCING A WASH SOLUTION FROM A FIRST PORTION OF SAID RAW WATER BY DISSOLVING THEREIN A QUANTITY OF DETERGENT, SUBJECTING THE DISHES TO A WASHING ACTION WITH SAID WASH SOLUTION, PRODUCING A RINSE SOLUTION FROM A SECOND PORTION OF SAID RAW WATER BY PREFERENTIALLY EXTRACTING THEREFROM THE CATIONS WITH RESPECT TO THE ANIONS OF SAID DISSOLVED METAL SALTS WITH THE CONSEQUENT SIMULTANEOUS REDUCTION OF THE CONCENTRATION OF SAID CATIONS THEREIN AND OF THE PH THEREOF, AND THEN SUBJECTING THE DISHES TO A RINSING ACTION WITH SAID RINSE SOLUTION.
Claim 3
Dependent Claim
214 words
DISHWASHING APPARATUS COMPRISING A VAT ADAPTED TO RECEIVE DISHES TO BE WASHED, A SUPPLY CONDUIT ADAPTED TO BE CONNECTED TO A SOURCE OF WATER UNDER PRESSURE AND HAVING DISSOLVED THEREIN SMALL AMOUNTS OF MINERAL SALTS, STRUCTURE PROVIDED WITH A CHANNEL THERETHROUGH, A DRAIN CONDUIT, A FIRST CONNECTION FROM SAID SUPPLY CONDUIT DIRECTLY TO SAID VAT, A SECOND CONNDCTION FROM SAID SUPPLY CONDUIT VIA SAID CHANNEL TO SAID VAT, A THIRD CONNECTION FROM SAID VAT TO SAID DRAIN CONDUIT, FIRST INLET MECHANISM SELECTIVELY OPERATIVE TO CONTROL THE INTRODUCTION OF WATER INTO SAID VAT VIA SAID FIRST CONNECTION, SECOND INLET MECHANISM SELECTIVELY OPERATIVE TO CONTROL THE INTRODUCTION OF WATER INTO SAID VAT VIA SAID SECOND CONNECTION, MEANS FOR PREFERENTIALLY EXTRACTING FROM THE WATER PASSING THROUGH SAID CHANNEL AND CATIONS WITH RESPECT TO THE ANIONS OF THE MINERAL SALTS DISSOLVED THEREIN SO AS SIMULTANEOUSLY TO DEMINERALIZE AND TO ACIDIFY THE SAME, DRAIN MECHANISM SELECTIVELY OPERATIVE TO CONTROL THE DRAINING OF WATER FROM SAID VAT VIA SAID THIRD CONNECTION, A MOTOR OPERATIVE TO CIRCULATE THE WATER IN SAID VAT INTO CONTACT WITH THE DISHES THEREIN, AND MEANS FOR SELECTIVELY OPERATING SAID FIRST AND SECOND INLET MECHANISMS AN SAID DRAIN MECHANISM AND SAID MOTOR IN A PREDETERMINED SEQUENCE IN ORDER TO PRODUCE A GIVEN WASHING CYCLE IN SAID VAT.
Claim 4
Dependent Claim
214 words
DISHWASHING APPARATUS COMPRISING A VAT ADAPTED TO RECEIVE DISHES TO BE WASHED, A SUPPLY CONDUIT ADAPTED TO BE CONNECTED TO A SOURCE OF WATER UNDER PRESSURE AND HAVING DISSOLVED THEREIN SMALL AMOUNTS OF MINERAL SALTS, STRUCTURE PROVIDED WITH A CHANNEL THERETHROUGH, A DRAIN CONDUIT, A FIRST CONNECTION FROM SAID SUPPLY CONDUIT DIRECTLY TO SAID VAT, A SECOND CONNDCTION FROM SAID SUPPLY CONDUIT VIA SAID CHANNEL TO SAID VAT, A THIRD CONNECTION FROM SAID VAT TO SAID DRAIN CONDUIT, FIRST INLET MECHANISM SELECTIVELY OPERATIVE TO CONTROL THE INTRODUCTION OF WATER INTO SAID VAT VIA SAID FIRST CONNECTION, SECOND INLET MECHANISM SELECTIVELY OPERATIVE TO CONTROL THE INTRODUCTION OF WATER INTO SAID VAT VIA SAID SECOND CONNECTION, MEANS FOR PREFERENTIALLY EXTRACTING FROM THE WATER PASSING THROUGH SAID CHANNEL AND CATIONS WITH RESPECT TO THE ANIONS OF THE MINERAL SALTS DISSOLVED THEREIN SO AS SIMULTANEOUSLY TO DEMINERALIZE AND TO ACIDIFY THE SAME, DRAIN MECHANISM SELECTIVELY OPERATIVE TO CONTROL THE DRAINING OF WATER FROM SAID VAT VIA SAID THIRD CONNECTION, A MOTOR OPERATIVE TO CIRCULATE THE WATER IN SAID VAT INTO CONTACT WITH THE DISHES THEREIN, AND MEANS FOR SELECTIVELY OPERATING SAID FIRST AND SECOND INLET MECHANISMS AN SAID DRAIN MECHANISM AND SAID MOTOR IN A PREDETERMINED SEQUENCE IN ORDER TO PRODUCE A GIVEN WASHING CYCLE IN SAID VAT.
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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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |