US3709236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dishwasher
Assignee: Jenn Air Corp
•
Filing: 1969-12-08
•
Granted: 1973-01-09
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Expires: 1989-12-08
Abstract
Abstract A side-by-side top loading dishwasher in combination with a sink wherein the wall therebetween in conjunction with a specific closure for the dishwasher is adapted to direct accidental water overflow into the sink. A disk-shaped spray head overlies the heating element to protect dishes from direct radiation. Its spinning action directs waste particles centrifugally to the outer periphery of the machine.
Inventors
- 👤 T Field
- 👤 C Beckwith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:31
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/14; A47L15/18; A47L15/22; A47L15/23; A47L15/0086
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
In a dishwasher including a tub having a sump in the bottom thereof with heating means, power driven pump means for drawing washing liquid from the sump and discharging it through a rotatable spray head into an upper washing area of the tub, the imprevement comprising: a hollow disk-shaped spray head adapted for rotation in a horizontal plane above the sump, said disk-shaped spray head covering a substantial portion of the horizontal area of the tub and having outlet openings in the top thereof with at least some being so directed for causing rotation of said head as washing liquid is discharged therethrough, screen means covering the horizontal area radially outwardly from the outer periphery of the disk-shaped spray head to the tub walls for defining means for straining washing liquid passing back to the sump for restraining food particles of over a pre-determined size, said screen means having an inner periphery underlying the outer perimeter of the rotatable disk-shaped spray head whereby washing liquid and food particles after having fallen onto the head are propelled radially outwardly by centrifugal force onto the screen means.
Claim 2
Dependent Claim
185 words
In a dishwasher including a tub having a sump in the bottom thereof with heating means, power driven pump means for drawing washing liquid from the sump and discharging it through a rotatable spray head into an upper washing area of the tub, the imprevement comprising: a hollow disk-shaped spray head adapted for rotation in a horizontal plane above the sump, said disk-shaped spray head covering a substantial portion of the horizontal area of the tub and having outlet openings in the top thereof with at least some being so directed for causing rotation of said head as washing liquid is discharged therethrough, screen means covering the horizontal area radially outwardly from the outer periphery of the disk-shaped spray head to the tub walls for defining means for straining washing liquid passing back to the sump for restraining food particles of over a pre-determined size, said screen means having an inner periphery underlying the outer perimeter of the rotatable disk-shaped spray head whereby washing liquid and food particles after having fallen onto the head are propelled radially outwardly by centrifugal force onto the screen means.
Claim 3
Dependent Claim
28 words
The claimed subject matter of claim 1 further defined by said disk-shaped spray head overlying the heating means thereby preventing direct radiation on dishes from the heating means.
Claim 4
Dependent Claim
125 words
In a dishwasher including a tub having a sump in the bottom thereof with heating means, power driven pump means for drawing washing liquid from the sump and discharging it through a rotatable spray head into an upper washing area of the tub, the improvement comprising: a hollow disk-shaped spray head adapted for rotation in a horizontal plane above the sump and below dishes to be washed, said spray head having spray openings therein at least part of which so directed for causing rotation of said head upon washing liquid being supplied thereto by the pump, said disk-shaped spray head being larger than and overlying the heating means thereby preventing substantially all direct radiation from the heating means on the dishes during a drying cycle.
Claim 5
Dependent Claim
125 words
In a dishwasher including a tub having a sump in the bottom thereof with heating means, power driven pump means for drawing washing liquid from the sump and discharging it through a rotatable spray head into an upper washing area of the tub, the improvement comprising: a hollow disk-shaped spray head adapted for rotation in a horizontal plane above the sump and below dishes to be washed, said spray head having spray openings therein at least part of which so directed for causing rotation of said head upon washing liquid being supplied thereto by the pump, said disk-shaped spray head being larger than and overlying the heating means thereby preventing substantially all direct radiation from the heating means on the dishes during a drying cycle.
Claim 6
Dependent Claim
23 words
The invention according to claim 3 wherein the outer periphery of the disk-shaped spray head overlies the heating element in close proximity thereto.
Claim 7
Dependent Claim
29 words
The invention according to claim 5 wherein the heating element is disposed in a general loop configuration having a diameter generally less than that of the disk-shaped spray head.
Claim 8
Dependent Claim
150 words
In a dishwasher including a tub having a sump in the bottom thereof with heating means, power driven pump means for drawing washing liquid from the sump and discharging it through a rotatable spray head into an upper washing area of the tub, the improvement comprising: a hollow disk-shaped spray head adapted for rotation in a horizontal plane above the sump, said spray head hAving spray openings therein at least part of which so directed for causing rotation of said head upon washing liquid being supplied thereto by the pump, said disk-shaped spray head overlying the heating means thereby preventing direct radiation on dishes from the heating means, said disk-shaped spray head additionally overlying a central portion of screen means which extends across the tub whereby washing liquid falling on the disk-shaped spray head is thrown centrifugally therefrom onto the screen for restraining food particles from passing to the sump.
Claim 9
Dependent Claim
150 words
In a dishwasher including a tub having a sump in the bottom thereof with heating means, power driven pump means for drawing washing liquid from the sump and discharging it through a rotatable spray head into an upper washing area of the tub, the improvement comprising: a hollow disk-shaped spray head adapted for rotation in a horizontal plane above the sump, said spray head hAving spray openings therein at least part of which so directed for causing rotation of said head upon washing liquid being supplied thereto by the pump, said disk-shaped spray head overlying the heating means thereby preventing direct radiation on dishes from the heating means, said disk-shaped spray head additionally overlying a central portion of screen means which extends across the tub whereby washing liquid falling on the disk-shaped spray head is thrown centrifugally therefrom onto the screen for restraining food particles from passing to the sump.
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |