US3071432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for operating a washing machine
Assignee: Maschinenfabrik Peter Pfenningsberg GmbH
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Filing: 1958-09-30
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Granted: 1963-01-01
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Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 Geschka Hugo Werner
- 👤 Heidenreich Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:29
CPC Classifications
D; D06; D06F; D06F35/00; D06F35/005; D06F35/006; D06F37/00; D06F37/02; D06F37/04; D06F37/06; D06F37/065; D06F34/00; D06F34/28; D06F34/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR OPERATING A WASHING MACHINE PROVIDED WITH A ROTATABLE DRUM, COMPRISING THE STEPS OF CHARGING SAID DRUM WITH ARTICLES TO BE WASHED, SETTING SAID DRUM IN ROTATION, CONTINUOUSLY HEATING SAID DRUM TO THE ROTATING DRUM AND REMOVING OVERFLOWING LIQUID FROM SAID DRUM WHILE CONTINUOUSLY HEATING SAID DRUM DURING A FIRST OPERATING STAGE AT A RATE RESULTING IN A SUBSTANTIALLY LINEAR RISE OF THE TEMPERATURE OF SAID WATER, DISCONTINUING THE WATER SUPPLY UPON SAID TEMPERATURE ATTAINING A PREDETERMINED LEVEL SUBSTANTIALLY BELOW THE BOILING POINT OF WATER, MAINTAINING THE SUPPLY OF HEAT DURING A SECOND OPERATING STAGE AT A RATE RESULTING IN A MORE RAPID RISE OF THE WATER TEMPERATURE TOWARD THE BOILING POINT OF WATER, AND CONTINUING THE HEATING OF THE ROTATING DRUM UNTIL THE WATER TEMPERATURE HAS REACHED A VALUE CLOSE TO SAID BOILING POINT.
Claim 2
Dependent Claim
137 words
A PROCESS FOR OPERATING A WASHING MACHINE PROVIDED WITH A ROTATABLE DRUM, COMPRISING THE STEPS OF CHARGING SAID DRUM WITH ARTICLES TO BE WASHED, SETTING SAID DRUM IN ROTATION, CONTINUOUSLY HEATING SAID DRUM TO THE ROTATING DRUM AND REMOVING OVERFLOWING LIQUID FROM SAID DRUM WHILE CONTINUOUSLY HEATING SAID DRUM DURING A FIRST OPERATING STAGE AT A RATE RESULTING IN A SUBSTANTIALLY LINEAR RISE OF THE TEMPERATURE OF SAID WATER, DISCONTINUING THE WATER SUPPLY UPON SAID TEMPERATURE ATTAINING A PREDETERMINED LEVEL SUBSTANTIALLY BELOW THE BOILING POINT OF WATER, MAINTAINING THE SUPPLY OF HEAT DURING A SECOND OPERATING STAGE AT A RATE RESULTING IN A MORE RAPID RISE OF THE WATER TEMPERATURE TOWARD THE BOILING POINT OF WATER, AND CONTINUING THE HEATING OF THE ROTATING DRUM UNTIL THE WATER TEMPERATURE HAS REACHED A VALUE CLOSE TO SAID BOILING POINT.
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |