US4970870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commands system for electronic refrigerator control
Assignee: Maytag Corp
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Filing: 1989-11-06
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Granted: 1990-11-20
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Expires: 2009-11-06
Abstract
Abstract An input command system for an electronic refrigerator control wherein dedicated function keys are provided for inputting commands to the processor. The processor will not accept inputs from the dedicated function keys unless an enable key is pressed first. The enable key is hidden on the control panel so as to avoid unauthorized inputting of commands. Once enabled, the processor receives commands for a predetermined time period that is extended when commands are input.
Inventors
- 👤 Brian M. Midlang
- 👤 David M. Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:27
CPC Classifications
F; F25; F25D; F25D29/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; G05B19/106; G05B19/108; F25B; F25B2600/00; F25B2600/02; F25B2600/025; F25B2600/0251; F25D2400/00; F25D2400/06; F25D2400/28; F25D2400/30; F25D2400/36; F25D2700/00; F25D2700/02; F25D2700/12; F25D2700/122; G05B2219/00; G05B2219/20; G05B2219/23; G05B2219/23314; G05B2219/24; G05B2219/24158; G05B2219/26; G05B2219/2654
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
60 words
An electronic control for a refrigerator, comprising: an electronic processor; a control panel comprising operator actuable means for inputting commands to said electronic processor, said inputting means normally being disabled; and said control panel further comprising means for enabling said inputting means for a predetermined time interval wherein said time interval is extended by operator actuation of said inputting means.
Claim 2
Dependent Claim
60 words
An electronic control for a refrigerator, comprising: an electronic processor; a control panel comprising operator actuable means for inputting commands to said electronic processor, said inputting means normally being disabled; and said control panel further comprising means for enabling said inputting means for a predetermined time interval wherein said time interval is extended by operator actuation of said inputting means.
Claim 3
Dependent Claim
21 words
The control recited in claim 1 wherein said inputting means comprises a plurality of switches each corresponding to a dedicated function.
Claim 4
Dependent Claim
20 words
The control recited in claim 2 wherein one of said dedicated functions is raising the set temperature for said refrigerator.
Claim 5
Dependent Claim
20 words
The control recited in claim 2 wherein one of said dedicated functions is lowering the set temperature for said refrigerator.
Claim 6
Dependent Claim
33 words
The control recited in claim 2 wherein one of said dedicated functions is a mode wherein the set temperature for said refrigerator is lowered to a predetermined temperature for a predetermined time interval.
Claim 7
Dependent Claim
72 words
An electronic control for a refrigerator, comprising: an electronic processor; a control panel having at least one switch for inputting a command to said electronic processor; and means for enabling, for a predetermined time interval, the input of said command to said processor by operator actuation of said at least one switch wherein the enabled time interval is extended by actuation of said at least one switch during the enabled time interval.
Claim 8
Dependent Claim
72 words
An electronic control for a refrigerator, comprising: an electronic processor; a control panel having at least one switch for inputting a command to said electronic processor; and means for enabling, for a predetermined time interval, the input of said command to said processor by operator actuation of said at least one switch wherein the enabled time interval is extended by actuation of said at least one switch during the enabled time interval.
Claim 9
Dependent Claim
15 words
The control recited in claim 6 wherein said predetermined time interval is approximately 10 minutes.
Claim 10
Dependent Claim
39 words
The control recited in claim 6 wherein the enabled time interval for entering said command by operator actuation of said at least one switch is extended until said at least one switch is inactive for a predetermined time interval.
Claim 11
Dependent Claim
72 words
The control recited in claim 6 wherein said control panel includes a switch board including said at least one switch and also a second switch, said control panel further comprising a flexible face plate covering said switch board, said face plate comprising indicia means for identifying the location of said one switch behind said face plate and for hiding the location of said second switch, said enabling means comprising said second switch.
Claim 12
Dependent Claim
26 words
The control recited in claim 9 wherein said indicia means comprises a key pad corresponding to the position of said one switch behind said face plate.
Claim 13
Dependent Claim
29 words
The control recited in claim 10 wherein said switch board comprises a plurality of other switches having corresponding key pads on said face plate for indentifying their respective locations.
Claim 14
Independent Claim
67 words
The method of inputting commands to an electronic processor of a refrigerator, comprising the steps of: enabling the input of operator commands through at least one input command switch for a predetermined time period in response to operator actuation of enable switch; and extending the predetermined period of enablement in response to operator actuation of said at least one input command switch during the predetermined time period.
Claim 15
Independent Claim
67 words
The method of inputting commands to an electronic processor of a refrigerator, comprising the steps of: enabling the input of operator commands through at least one input command switch for a predetermined time period in response to operator actuation of enable switch; and extending the predetermined period of enablement in response to operator actuation of said at least one input command switch during the predetermined time period.
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) | 1993-11-19 | 1994-05-21 | 1994-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-19 | 1998-05-21 | 1998-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-19 | 2002-05-21 | 2002-11-20 | $7700.00 | Window Closed / Lapsed |