Patent US3077314A successfully refreshed from Google Patents.
Patent US3771333A successfully refreshed from Google Patents.
US3771333A
Expired / Lapsed
US
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Programmable control of the injection of additives in a laundering operation
Assignee: JETRONICS IND Inc
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Filing: 1972-07-25
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Granted: 1973-11-13
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Expires: 1992-07-25
Abstract
Abstract Additives used in a laundering operation are automatically injected into the wash load by the use of a programmed electropneumatic system. An electrical oscillator means operated by a program timer is used to control the cyclical opening and closing of a solenoid valve. The solenoid valve functions to control the application and relief of pneumatic pressure to a plurality of additive pneumatic metering pumps, and additional solenoid valves also operated by the program timer determine which of the metering pumps are actuated by the cyclical pneumatic pressure pulses obtained from said cyclically operating valve.
Inventors
- 👤 O Jurjans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/02; D06F39/022; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
165 words
A system for injecting additive materials into the wash load of an automatic washing machine, comprising a program timer operating in relation to the several stages of operation in the wash program of the machine, said timer including a plurality of electrical contacts means and means for closing said electrical contact means selectively and for predetermined periods of time, a plurality of containers for additives, a metering pump associated with each of said containers and related to a respective one of said contact means, cycling means for driving said pumps, means for selectively coupling said cycling means to one or more of said pumps, means for coupling all of said contact means to said cycling means for activating said cycling means upon the closure of any one of said contact means, means for coupling each of said contact means to said selective coupling means to selectively control the coupling of said cycling means to said pumps in accordance with the closure of respective contact means.
Claim 2
Independent Claim
165 words
A system for injecting additive materials into the wash load of an automatic washing machine, comprising a program timer operating in relation to the several stages of operation in the wash program of the machine, said timer including a plurality of electrical contacts means and means for closing said electrical contact means selectively and for predetermined periods of time, a plurality of containers for additives, a metering pump associated with each of said containers and related to a respective one of said contact means, cycling means for driving said pumps, means for selectively coupling said cycling means to one or more of said pumps, means for coupling all of said contact means to said cycling means for activating said cycling means upon the closure of any one of said contact means, means for coupling each of said contact means to said selective coupling means to selectively control the coupling of said cycling means to said pumps in accordance with the closure of respective contact means.
Claim 3
Dependent Claim
21 words
A system as set forth in claim 1, wherein said program timer also controls the operational program of the washing machine.
Claim 4
Dependent Claim
17 words
A system as set forth in claim 1, wherein said cycling means comprises an electrical oscillator means.
Claim 5
Dependent Claim
24 words
A system as set forth in claim 3, wherein said oscillator means includes an oscillator and a binary frequency divider driven by said oscillator.
Claim 6
Dependent Claim
29 words
A system as set forth in claim 3, wherein said cycling means includes a valve that is opened and closed in response to the output of said oscillator means.
Claim 7
Dependent Claim
31 words
A system as set forth in claim 5, wherein said selective coupling means comprises a valve for each of said metering pumps controlled by a respective one of said contact means.
Claim 8
Dependent Claim
37 words
A system as set forth in claim 6, and further including a source of fluid under pressure, means coupling said source to the first-mentioned valve, and means coupling said first-mentioned valve to all of the second-mentioned valves.
Claim 9
Dependent Claim
15 words
A system as set forth in claim 7, wherein all said valves are solenoid valves.
Claim 10
Dependent Claim
24 words
A system as set forth in claim 8, wherein said oscillator means includes an oscillator and a binary frequency divider driven by said oscillator.
Claim 11
Dependent Claim
22 words
A system as set forth in claim 1, wherein said cycling means includes a valve that opens and closes cyclically when activated.
Claim 12
Dependent Claim
31 words
A system as set forth in claim 10, wherein said selective coupling means comprises a valve for each of said metering pumps controlled by a respective one of said contact means.
Claim 13
Dependent Claim
37 words
A system as set forth in claiM 11, and further including a source of fluid under pressure, means coupling said source to the first-mentioned valve, and means coupling said first-mentioned valve to all of the second-mentioned valves.
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |