US3878699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous washing machine
Assignee: Senkingwerk GmbH KG
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Filing: 1973-02-07
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Granted: 1975-04-22
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Expires: 1993-02-07
Abstract
Abstract A continuous washing machine comprises a drum divided axially into a plurality of washing chambers. A helical feed passage is arranged on one side of the chambers and is arranged to feed batches of washing from one chamber to an adjacent chamber during rotation of the drum in one direction. Rotation of the drum in the reverse direction causes the batches to remain in the respective chambers.
Inventors
- 👤 Hans Steinort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:27
CPC Classifications
D; D06; D06F; D06F31/00; D06F31/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
145 words
In a continuous washing machine, a rotatable washing drum, means dividing the interior of the drum into a plurality of separate washing chambers, means for moving washing within the respective washing chambers during rotation of the washing drum in one sense, and means for feeding batches of washing from one chamber to an adjacent chamber during rotation of the drum in the reverse sense, said feed means comprising means defining a separate helical feed passage for each of the plurality of separate chambers arranged on one side of each chamber, said passage-defining means comprising means defining helically inclined feed surfaces, and means defining surfaces partially surrounding the helical surface-defining means, said dividing means being in the form of partitions, and the helical surface-defining means comprising portions of the said partitions, said portions being bent to extend across about half of the width of each chamber.
Claim 2
Dependent Claim
145 words
In a continuous washing machine, a rotatable washing drum, means dividing the interior of the drum into a plurality of separate washing chambers, means for moving washing within the respective washing chambers during rotation of the washing drum in one sense, and means for feeding batches of washing from one chamber to an adjacent chamber during rotation of the drum in the reverse sense, said feed means comprising means defining a separate helical feed passage for each of the plurality of separate chambers arranged on one side of each chamber, said passage-defining means comprising means defining helically inclined feed surfaces, and means defining surfaces partially surrounding the helical surface-defining means, said dividing means being in the form of partitions, and the helical surface-defining means comprising portions of the said partitions, said portions being bent to extend across about half of the width of each chamber.
Claim 3
Dependent Claim
145 words
In a continuous washing machine, a rotatable washing drum, means dividing the interior of the drum into a plurality of separate washing chambers, means for moving washing within the respective washing chambers during rotation of the washing drum in one sense, and means for feeding batches of washing from one chamber to an adjacent chamber during rotation of the drum in the reverse sense, said feed means comprising means defining a separate helical feed passage for each of the plurality of separate chambers arranged on one side of each chamber, said passage-defining means comprising means defining helically inclined feed surfaces, and means defining surfaces partially surrounding the helical surface-defining means, said dividing means being in the form of partitions, and the helical surface-defining means comprising portions of the said partitions, said portions being bent to extend across about half of the width of each chamber.
Claim 4
Dependent Claim
145 words
In a continuous washing machine, a rotatable washing drum, means dividing the interior of the drum into a plurality of separate washing chambers, means for moving washing within the respective washing chambers during rotation of the washing drum in one sense, and means for feeding batches of washing from one chamber to an adjacent chamber during rotation of the drum in the reverse sense, said feed means comprising means defining a separate helical feed passage for each of the plurality of separate chambers arranged on one side of each chamber, said passage-defining means comprising means defining helically inclined feed surfaces, and means defining surfaces partially surrounding the helical surface-defining means, said dividing means being in the form of partitions, and the helical surface-defining means comprising portions of the said partitions, said portions being bent to extend across about half of the width of each chamber.
Claim 5
Dependent Claim
27 words
A washing machine according to claim 1 wherein the helical surface-defining means further comprise inclined surfaces connecting the said portion of a partition to an adjacent partition.
Claim 6
Dependent Claim
48 words
A washing machine according to claim 1 wherein the said surfaces partially surrounding the helical feed surface are formed by the inner surface of the drum which surface externally surrounds the helical feed surface, a lifting surface, and a sliding surface, said lifting surface forming said moving means.
Claim 7
Dependent Claim
33 words
A washing machine according to claim 3 wherein said passage-defining means further comprise guide surface means extending parallel to the axis of the washing drum, said guide surface means connecting adjacent said partitions.
Claim 8
Dependent Claim
24 words
A washing machine according to claim 3 wherein each said lifting surface is inclined at an obtuse angle to a following said sliding surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |