Patent EP0093557A2 successfully refreshed from Google Patents.
EP0661908A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Operating switch for a microwave oven and control circuit therefor
Assignee: Samsung Electronics Co Ltd
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Filing: 1994-12-30
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Granted: —
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Expires: 2014-12-30
Abstract
Abstract An operating switch (10)for an oven, comprises first (66) and second (62) switching means individually rotatable about a common axis (X-X') by means of first and second knobs (67,63) for selecting a cooking time and a menu option respectively, the first switching means including a shaft (36,38) movable longitudinally of said axis by pressing the knob (67) for activating a push switch (14) that starts the cooking operation. The first and second switching means include rotary digital encoders that produce digital signals according to the rotation angle of the knobs. The signals, together with signals from the push switch, are input to a microprocessor (120) that controls the cooking operation according to the selected menu and cooking time. <IMAGE>
Inventors
- 👤 Sung-Ho Lee
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 16:35
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/08; H; H01; H01H; H01H19/00; H01H19/54; H01H19/56; H01H19/58; H01H19/585; G; G01; G01D; G01D5/00; G01D5/12; G01D5/25; H05; H05B; H05B6/00; H05B6/64; H05B6/6435; H01H19/02; H01H19/10; H01H19/14; H01H2019/143; H01H25/00; H01H25/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
45 words
An operating switch for an oven, comprising first (66) and second (62) switching means individually rotatable about a common axis (X-X') for selecting different parameters of a cooking process, one of said switching means being movable longitudinally of said axis for activating the cooking process.
Claim 2
Dependent Claim
36 words
An operating switch according to claim 1 wherein the first switching means (66) is operative for selecting the time of the cooking process and the second switching means (62) is operative for selecting a cooking menu.
Claim 3
Dependent Claim
33 words
An operating switch according to any preceding claim wherein the first or the second switching means (66;62) includes means (16,18,34;40,50,54) for producing a digital signal according to the angular position of rotation thereof.
Claim 4
Dependent Claim
63 words
An operating switch according to claim 3 wherein the first or the second switching means (66;62) includes a plurality of concentric electrically conductive tracks (18b-c;54b-e) formed with radially extending lands (18'b-c;54'b-e) at predetermined angular positions, and a plurality of resiliently deformable wiper contacts (34a,b;50b-e) to be rotated with the switching means to make selective connection to the lands to define said digital signal.
Claim 5
Dependent Claim
30 words
An operating switch according to any preceding claim including a push switch (14) operable upon longitudinal movement of the first switching means (66) so as to initiate the cooking process.
Claim 6
Dependent Claim
33 words
An operating switch according to claim 5 wherein the first switching means (66) includes a shaft (36,38)rotatable about said common axis (X-X') and reciprocable along said axis to operate the push switch (14).
Claim 7
Dependent Claim
46 words
An operating switch according to claim 6 including a first knob (67) at one end of the shaft to permit user rotation and reciprocation thereof, and spring means (32,42) for resiliently holding the shaft in a given axial position to permit operation of the push switch.
Claim 8
Dependent Claim
31 words
An operating switch according to claim 7 wherein the first switching means (66) includes a fixed support member (16) and a first rotary switching disc (30) rotated by the shaft (36,38).
Claim 9
Dependent Claim
43 words
An operating switch according to claim 7 or 8 wherein the second switching means (63) includes a second knob (64) coaxial with and surrounding the first knob (67), a fixed member (52), and a second switching disc (40) driven by the second knob.
Claim 10
Dependent Claim
36 words
An operating switch according to claim 9 wherein the shaft (36) extends through a holes (24,46,60) in the member (52), the second switching disc (40) and the first switching disc (30) to said push switch (14).
Claim 11
Dependent Claim
13 words
An oven provided with an operating switch (10) according to any preceding claim.
Claim 12
Dependent Claim
11 words
An oven according to claim 11 and comprising a microwave oven.
Claim 13
Dependent Claim
25 words
A microwave oven according to claim 12 including control means (120) responsive to said longitudinal movement of the switching means for starting a cooking process.
Claim 14
Dependent Claim
34 words
A microwave oven according to claim 13 wherein the control means (120) is responsive to rotation of the first and second switching means (66,62) for respectively selecting a cooking time and a menu option.
Claim 15
Dependent Claim
25 words
A microwave oven according to claim 14 including display means (140) responsive to the control means for displaying the set cooking time and menu option.
Claim 16
Dependent Claim
28 words
A microwave oven according to any one of claims 12 to 15 including driving means (130) for generating microwave radiation under the control of the control means (120).
Claim 17
Dependent Claim
91 words
A control circuit for a microwave oven, the control circuit comprising: a cooking input means (110) for inputtng a cooking time and a cooking menu; a control means (120) for controlling an overall cooking operation according to the cooking time and cooking menu input by the cooking input means; a drive means (130) for driving a magnetron in order to perform a cooking operation according to the control of the control means; and a display means (140) for displaying the cooking time and cooking menu input by the cooking input means.
Claim 18
Dependent Claim
78 words
A control circuit as defined in claim 17 wherein the cooking input means comprises: a time setting unit (111) for setting a cooking time; a menu selecting unit (113) for selecting the cooking menu during the cooking time setting according to the time setting unit; and operation start unit (115) for starting the cooking operation according to the cooking time set by the time setting unit and according to the cooking menu selected by the menu selecting unit.
Claim 19
Dependent Claim
50 words
A control circuit as defined in claim 18, wherein the time setting unit comprises: first encoder (112) for outputting the established cooking time as a digital signal; and a plurality of resistors (R1-R4) connected to said encoder for inputting to said control means (120) the signals output by the encoder.
Claim 20
Dependent Claim
53 words
A control circuit defined in claim 19 or 19 wherein the menu selecting unit comprises: a second encoder for outputting the selected cooking menu as a digital signal; and a plurality of resistors (R5-R12) connected to said second encoder for inputting to the control means (120) the signals output by the second encoder.
Claim 21
Dependent Claim
89 words
A control circuit defined in claim 18, 19 or 20 wherein the operation start unit comprises: an operation start switch (14) for being turned on or turned off in order to perform the cooking operation according to the cooking menu selected by the menu selecting unit and according to the cooking time established by the time setting unit; and a plurality of resistors (R13-R14) connected to the operation start switch for inputting to said control means a voltage in accordance with activation and/or deactivation of the operation start switch.
References Cited (Backward Citations)
No citation records indexed.
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