US3833845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch button control system
Assignee: Iona Appliances Inc
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Filing: 1973-07-18
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Granted: 1974-09-03
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Expires: 1993-07-18
Abstract
Abstract An electronic control system especially adapted to control a universal motor with respect to pre-determined speeds, in order to provide a variety of desired functions, and with respect to its energization time.
Inventors
- 👤 C Smallbone
- 👤 L Beaudoin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:47
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/10; H02P25/14; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/935; Y10S388/936
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A touch button control memory system comprising: a. a potentiometer having a plurality of movable switch contacts, including individual switching means for selectively actuating each of said contacts only for a moment so as to establish contact to respective points of predetermined voltage values on said potentiometer; b. a memory device in the form of a long-term storage capacitor including means for selectively storing any one of said predetermined voltage values in response to the momentary actuation of a particular one of said movable switch contacts, and further including means for isolating said capacitor so that it continues to store said one value after deactuation of the respective individual switching means; and c. a translating device connected to said memory device for translating the voltage values stored therein to coRresponding stored impedance values.
Claim 2
Dependent Claim
133 words
A touch button control memory system comprising: a. a potentiometer having a plurality of movable switch contacts, including individual switching means for selectively actuating each of said contacts only for a moment so as to establish contact to respective points of predetermined voltage values on said potentiometer; b. a memory device in the form of a long-term storage capacitor including means for selectively storing any one of said predetermined voltage values in response to the momentary actuation of a particular one of said movable switch contacts, and further including means for isolating said capacitor so that it continues to store said one value after deactuation of the respective individual switching means; and c. a translating device connected to said memory device for translating the voltage values stored therein to coRresponding stored impedance values.
Claim 3
Dependent Claim
27 words
A system as defined in claim 1, in which a charging circuit is provided, said impedance values of said translating device constituting part of said charging circuit.
Claim 4
Dependent Claim
72 words
A system as defined in claim 2, further comprising a motor and a control device in series with said motor; another capacitor, forming part of said charging circuit and connected to a gate electrode of said control device, the charging rate of said other capacitor being effective to determined the firing angle of said control device, thereby to control the period during a predetermined power supply cycle when said motor is conducting.
Claim 5
Dependent Claim
29 words
A system as defined in claim 3, further comprising a Zener diode connected between said other capacitor in said charging circuit and the gate electrode of said control device.
Claim 6
Dependent Claim
38 words
A system as defined in claim 4, in which a timer control is included, comprising an RC network connected to the input of another transistor, the output circuit of said other transistor being connected across said memory capacitor.
Claim 7
Dependent Claim
36 words
A system as defined in claim 1 in which said translating device is a transistor and said memory capacitor is connected to the base of said transistor, the other capacitor being connected to the emitter thereof.
Claim 8
Dependent Claim
26 words
A system as defined in claim 6, in which another resistor is connected between the emitter of said transistor and the anode of said control device.
Claim 9
Dependent Claim
31 words
A system as defined in claim 1, further comprising a master control switch means for switching the memory device into its appropriate circuit and for connecting AC power to said system.
Claim 10
Dependent Claim
30 words
A system as defined in claim 8, in which said master control switch includes means for shorting out said memory capacitor when said control switch is in its OFF position.
Claim 11
Dependent Claim
45 words
A system as defined in claim 1, further including means providing a DC supply across said potentiometer, said movable switch contacts having one side thereof connected in common to said memory capacitor and the other side respectively connected to said selected points on said potentiometer.
Claim 12
Dependent Claim
33 words
A system as defined in claim 1, in which said potentiometer is formed by a network of resistors in series, the individual resistors between selected points on the potentiometer being of unequal value.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |