US3258792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for dispensing an additive to a washing machine
Assignee: Whirlpool Corp
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Filing: 1963-11-12
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Granted: 1966-07-05
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 William R Rickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:30
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/02; Y; Y10; Y10T; Y10T137/00; Y10T137/4891; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
THE METHOD OF ADMIXING LAUNDRY ADDITIVE WITH A LAUNDRY LIQUID IN AN AUTOMATIC WASHING MACHINE WHICH COMPRISES THE STEPS OF, CONFINING THE LAUNDRY LIQUID IN A HYDRAULIC CIRCUIT, CIRCULATING THE LAUNDRY LIQUID IN ONE DIRECTION THROUGH SAID HYDRAULIC CIRCUIT, AT ONE POINT IN THE CIRCUIT DIRECTING THE LAUNDRY LIQUID IN THE FORM OF A STREAM UNDER POSITIVE HYDRAULIC PRESSURE INTO AN ADDITIVE DISPENSER RESERVOIR CONTAINING A SUPPLY OF ADDITIVE, ADMIXING THE ADDITIVE AND THE PRESSURIZED STREAM OF LAUNDRY LIQUID IN THE RESERVOIR, AT A SECOND POINT IN THE CIRCUIT SITUATED DOWNSTREAM OF SAID ADDITIVE DISPENSER RESERVOIR CREATING TURBULANCE AND REVERSE FLOW OF THE ADMIXTURE OF ADDITIVE AND LAUNDRY LIQUID TO ENSURE THROUGH MIXING THEREOF, AND AT A THIRD POINT IN THE CIRCUIT DIRECTING THE ADMIXTURE INTO A TREATMENT ZONE FOR SUBJECTING A BATCH OF MATERIAL TO A LAUNDRY TREATMENT.
Claim 2
Independent Claim
139 words
THE METHOD OF ADMIXING LAUNDRY ADDITIVE WITH A LAUNDRY LIQUID IN AN AUTOMATIC WASHING MACHINE WHICH COMPRISES THE STEPS OF, CONFINING THE LAUNDRY LIQUID IN A HYDRAULIC CIRCUIT, CIRCULATING THE LAUNDRY LIQUID IN ONE DIRECTION THROUGH SAID HYDRAULIC CIRCUIT, AT ONE POINT IN THE CIRCUIT DIRECTING THE LAUNDRY LIQUID IN THE FORM OF A STREAM UNDER POSITIVE HYDRAULIC PRESSURE INTO AN ADDITIVE DISPENSER RESERVOIR CONTAINING A SUPPLY OF ADDITIVE, ADMIXING THE ADDITIVE AND THE PRESSURIZED STREAM OF LAUNDRY LIQUID IN THE RESERVOIR, AT A SECOND POINT IN THE CIRCUIT SITUATED DOWNSTREAM OF SAID ADDITIVE DISPENSER RESERVOIR CREATING TURBULANCE AND REVERSE FLOW OF THE ADMIXTURE OF ADDITIVE AND LAUNDRY LIQUID TO ENSURE THROUGH MIXING THEREOF, AND AT A THIRD POINT IN THE CIRCUIT DIRECTING THE ADMIXTURE INTO A TREATMENT ZONE FOR SUBJECTING A BATCH OF MATERIAL TO A LAUNDRY TREATMENT.
Claim 3
Dependent Claim
34 words
IN AN AUTOMATIC WASHING MACHINE, MEANS FORMING A HYDRAULIC CIRCUIT INCLUDING A TREATMENT ZONE AND A PUMP FOR CIRCULATING LAUNDRY LIQUID FROM THE TREATMENT ZONE THROUGH THE CIRCUIT AND BACK TO THE TREATMENT ZONE,
Claim 4
Dependent Claim
34 words
IN AN AUTOMATIC WASHING MACHINE, MEANS FORMING A HYDRAULIC CIRCUIT INCLUDING A TREATMENT ZONE AND A PUMP FOR CIRCULATING LAUNDRY LIQUID FROM THE TREATMENT ZONE THROUGH THE CIRCUIT AND BACK TO THE TREATMENT ZONE,
References Cited (Backward Citations)
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Cited
US2431040A
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US2540431A
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US3035431A
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US3019629A
Cited
US3066520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |