US3798465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control arrangement for a washing machine
Assignee: General Electric Co
•
Filing: 1972-09-28
•
Granted: 1974-03-19
•
Expires: 1992-09-28
Abstract
Abstract In an automatic dishwasher, apparatus is provided for improving the cleaning efficiency thereof. The dishwasher is of the type having a plurality of electrical components sequentially operable in an operational cycle controlled by an electrical sequence control timer device adapted for automatic advancement and includes rinsing, washing, drain and fill cycle portions. An electro-mechanical device combines the selection of the operational cycle and the selection of the time duration thereof into a single control and operation. This device includes a cam actuated switch having a plurality of contact points in a package with and operatively linked with an adjustable thermallyresponsive switch. A cam associated with the sequence control timer automatically cancels the time extension of the drain and fill portions, effectively limiting the time extension effect to the washing and drying cycle portions of an operational cycle.
Inventors
- 👤 L Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:25
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4293
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
157 words
In an automatic dishwasher of the type having a plurality of electrical components sequentially operable in at least one operational cycle controlled by an electrical sequence control means, the cycle including at least water fill, drain, and washing action portions, a control arrangement comprising: a. a manuaLly operable device adapted to provide simultaneous visual selection of an operational cycle and the duration thereof, the device including; 1. cycle extender means coupled to the sequence control means for periodically interrupting operation of said sequence control means to extend the operation thereof for desired durations as a function of the setting of the manual device; 2. selector means coupled to the sequence control means to permit operation of said sequence control means only when said sequence control means and the manual device are set for the same cycle; and b. means responsive to the sequence control means for disabling operation of the cycle extender means during predetermined cycle portions.
Claim 2
Dependent Claim
157 words
In an automatic dishwasher of the type having a plurality of electrical components sequentially operable in at least one operational cycle controlled by an electrical sequence control means, the cycle including at least water fill, drain, and washing action portions, a control arrangement comprising: a. a manuaLly operable device adapted to provide simultaneous visual selection of an operational cycle and the duration thereof, the device including; 1. cycle extender means coupled to the sequence control means for periodically interrupting operation of said sequence control means to extend the operation thereof for desired durations as a function of the setting of the manual device; 2. selector means coupled to the sequence control means to permit operation of said sequence control means only when said sequence control means and the manual device are set for the same cycle; and b. means responsive to the sequence control means for disabling operation of the cycle extender means during predetermined cycle portions.
Claim 3
Dependent Claim
53 words
selector means coupled to the sequence control means to permit operation of said sequence control means only when said sequence control means and the manual device are set for the same cycle; and b. means responsive to the sequence control means for disabling operation of the cycle extender means during predetermined cycle portions.
Claim 4
Dependent Claim
53 words
selector means coupled to the sequence control means to permit operation of said sequence control means only when said sequence control means and the manual device are set for the same cycle; and b. means responsive to the sequence control means for disabling operation of the cycle extender means during predetermined cycle portions.
Claim 5
Dependent Claim
88 words
The invention of claim 1 wherein said manually operable device comprises a movable shaft having a plurality of cam surfaces thereon, the cycle extender means includes a thermally-responsive switch and control means coupling said thermal switch with one of said cam surfaces for selectively varying the response time of said thermal switch, and the selector means includes a switch having a plurality of contact positions coupled with the sequence control means and being operative with a second of said cam surfaces for selection of a particular operational cycle.
Claim 6
Dependent Claim
34 words
a first switch having a plurality of contact points and responsive to one of the cams to supply power to the timer only when the selected cycle corresponds to the cycle on the timer;
Claim 7
Dependent Claim
34 words
a first switch having a plurality of contact points and responsive to one of the cams to supply power to the timer only when the selected cycle corresponds to the cycle on the timer;
Claim 8
Dependent Claim
26 words
a second, thermally-responsive switch operative only during predetermined portions of a dishwashing cycle for periodically interrupting power to the timer thereby extending the normal time duration;
Claim 9
Dependent Claim
26 words
a second, thermally-responsive switch operative only during predetermined portions of a dishwashing cycle for periodically interrupting power to the timer thereby extending the normal time duration;
Claim 10
Dependent Claim
81 words
In an automatic dishwasher of the type having a plurality of electrical components sequentially operable in a plurality of operational cycles controlled by an electrical sequence control timer, and including at least washing action cycle portions for rinsing and washing, drain and fill cycle portions and a drying cycle portion, a control arrangement comprising: a. a manually operable, electromechanical device for simultaneously selecting particular operational cycles and the time duration of at least one of the cycles, the electromechanical device comprising:
Claim 11
Dependent Claim
81 words
In an automatic dishwasher of the type having a plurality of electrical components sequentially operable in a plurality of operational cycles controlled by an electrical sequence control timer, and including at least washing action cycle portions for rinsing and washing, drain and fill cycle portions and a drying cycle portion, a control arrangement comprising: a. a manually operable, electromechanical device for simultaneously selecting particular operational cycles and the time duration of at least one of the cycles, the electromechanical device comprising:
Claim 12
Dependent Claim
59 words
biasing means coupled to the thermally-responsive switch and responsive to a second cam on the shaft for variably adjusting the off-time of the timer; b. a cam means associated with the timer for disabling the time extension of the drain and fill cycle portions whereby the time extension effect is restricted to the washing action and drying cycle portions.
Claim 13
Dependent Claim
59 words
biasing means coupled to the thermally-responsive switch and responsive to a second cam on the shaft for variably adjusting the off-time of the timer; b. a cam means associated with the timer for disabling the time extension of the drain and fill cycle portions whereby the time extension effect is restricted to the washing action and drying cycle portions.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |