US2718481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of washing dishes
Assignee: Individual
•
Filing: 1949-12-12
•
Granted: 1955-09-20
•
Expires: 1969-12-12
Abstract
No abstract record available.
Inventors
- 👤 John B Tuthill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:00
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/46; A47L15/0002; A47L15/0015; A47L15/4236; A47L2601/00; A47L2601/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
309 words
A METHOD OF CLEANING AND STERILIZING SOILED DISHES WHICH COMPRISES INTERPOSING AND DISHES TO BE CLEANED WHICH COMPRISES INTERPOSING SAID DISHES TO BE CLEANED AND STERILIZED WITHIN THE NORMALLY CLOSED CIRCUIT OF A CONTINUOUSLY OPERATING, LIQUID RECIRCULATION SYSTEM; THEN, INTRODUCING SOAP AND WASH WATER INTO SAID SYSTEM FOR RECIRCULATION THEREOF WITHIN SAID SYSTEM BEGINNING AS SOON AS THEY ARE INTRODUCED, WHEREBY SAID SOAP AND WASH WATER ARE ADMIXED TO PRESENT A CLEANING SOLUTION TO WHOSE ACTION SAID DISHES ARE SUBJECTED DURING RECIRCULATION; THEN, AFTER A PREDETERMINED PERIOD OF TIME DURING WHICH RECIRCULATION OF SAID CLEANING SOLUTION IS CONTINUED, OPENING THE NORMALY CLOSED CIRCUIT OF SAID SYSTEM TO PERMIT DRINAGE FOR CLEARING THE SYSTEM OF SAID CLEANING SOLUTION; THEN, AFTER A PREDETERMINED FURTHER PERIOD OF TIME, AND WHILE SAID SYSTEM CONTINUES TO OPERATE IN OPENCIRCUITED CONDITION, COMMENCING THE INTRODUCTION RINSE WATER INTO SAID SYSTEM CONTINUES TO OPERATED IN OPENTEM AND OVER SAID DISHES, WHEREBY ANY CLEANING SOLUTION REMAINING ON SAID DISHES AND IN THE SYSTEM WILL BE FLUSHED THEREFROM; THEN, AFTER A PREDETERMINED FURTHER PERIOD OF TIME, AND WHILE SAID RINSE WATER CONTINUES TO BE INTRODUCED, RECLOSING THE CIRCUIT OF SAID SYSTEM FOR RECIRCULATION OF SAID RINSE WATER THROUGH SAID SYSTEM BEGINNING AS SOON AS IT IS INTRODUCED, WHEREBY TO FURTHER RINSE SAID DISHES; THEN, AS SOON AS SAID SYSTEM IS RECLOSED, AND WHILE SAID RINSE WATER CONTINUES TO BE INTRODUCED, INTRODUCING A STERLIZATION AGENT INTO SAID SYSTEM FOR RECIRCULATION THEREOF THROUGH SAID SYSTEM BEGINNING AS SOON AS IT IS INTRODUCED, WHEREBY SAID STERILIZING SOLUTION RINSE WATER ARE ADMIXED TO PRESENT A STERILIZING SOLUTION TO WHOSE ACTION SAID DISHES ARE SUBJECTED DURING RECIRCULATION; AND THEN, AFTER A PREDETERMINED FURTHER PERIOD OF TIME DURING WHICH RECIRCULATION OF SAID STERLIZING SOLUTION IS CONTINUED, OPENING THE NORMALLY CLOSED CIRCUIT OF SAID SYSTEM TO PERMIT DRAINAGE FOR CLEARING THE SYSTEM OF SAID STEILIZING SOLUTION.
Claim 2
Independent Claim
309 words
A METHOD OF CLEANING AND STERILIZING SOILED DISHES WHICH COMPRISES INTERPOSING AND DISHES TO BE CLEANED WHICH COMPRISES INTERPOSING SAID DISHES TO BE CLEANED AND STERILIZED WITHIN THE NORMALLY CLOSED CIRCUIT OF A CONTINUOUSLY OPERATING, LIQUID RECIRCULATION SYSTEM; THEN, INTRODUCING SOAP AND WASH WATER INTO SAID SYSTEM FOR RECIRCULATION THEREOF WITHIN SAID SYSTEM BEGINNING AS SOON AS THEY ARE INTRODUCED, WHEREBY SAID SOAP AND WASH WATER ARE ADMIXED TO PRESENT A CLEANING SOLUTION TO WHOSE ACTION SAID DISHES ARE SUBJECTED DURING RECIRCULATION; THEN, AFTER A PREDETERMINED PERIOD OF TIME DURING WHICH RECIRCULATION OF SAID CLEANING SOLUTION IS CONTINUED, OPENING THE NORMALY CLOSED CIRCUIT OF SAID SYSTEM TO PERMIT DRINAGE FOR CLEARING THE SYSTEM OF SAID CLEANING SOLUTION; THEN, AFTER A PREDETERMINED FURTHER PERIOD OF TIME, AND WHILE SAID SYSTEM CONTINUES TO OPERATE IN OPENCIRCUITED CONDITION, COMMENCING THE INTRODUCTION RINSE WATER INTO SAID SYSTEM CONTINUES TO OPERATED IN OPENTEM AND OVER SAID DISHES, WHEREBY ANY CLEANING SOLUTION REMAINING ON SAID DISHES AND IN THE SYSTEM WILL BE FLUSHED THEREFROM; THEN, AFTER A PREDETERMINED FURTHER PERIOD OF TIME, AND WHILE SAID RINSE WATER CONTINUES TO BE INTRODUCED, RECLOSING THE CIRCUIT OF SAID SYSTEM FOR RECIRCULATION OF SAID RINSE WATER THROUGH SAID SYSTEM BEGINNING AS SOON AS IT IS INTRODUCED, WHEREBY TO FURTHER RINSE SAID DISHES; THEN, AS SOON AS SAID SYSTEM IS RECLOSED, AND WHILE SAID RINSE WATER CONTINUES TO BE INTRODUCED, INTRODUCING A STERLIZATION AGENT INTO SAID SYSTEM FOR RECIRCULATION THEREOF THROUGH SAID SYSTEM BEGINNING AS SOON AS IT IS INTRODUCED, WHEREBY SAID STERILIZING SOLUTION RINSE WATER ARE ADMIXED TO PRESENT A STERILIZING SOLUTION TO WHOSE ACTION SAID DISHES ARE SUBJECTED DURING RECIRCULATION; AND THEN, AFTER A PREDETERMINED FURTHER PERIOD OF TIME DURING WHICH RECIRCULATION OF SAID STERLIZING SOLUTION IS CONTINUED, OPENING THE NORMALLY CLOSED CIRCUIT OF SAID SYSTEM TO PERMIT DRAINAGE FOR CLEARING THE SYSTEM OF SAID STEILIZING SOLUTION.
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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) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |