Food processing control apparatus

• US 3,943,421 A
• Filed: 07/11/1973
• Issued: 03/09/1976
• Est. Priority Date: 07/12/1972
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Funatsu, Kunio, Shibata, Morio, Sawamura, Fujio
• Primary Examiner(s): Scott, James R.
• Application Number:
  US05/378,133
• Time in Patent Office: 972 Days
• Field of Search: 200/33-38, 99/324, 99/325, 99/327, 99/331, 99/332, 99/334, 99/335, 99/337, 99/342, 99/343, 99/348, 99/378, 259/DIG. 17, 259/DIG. 18, 259/DIG. 19, 259/DIG. 35, 219/435, 219/441, 219/442, 219/448-452, 219/482, 219/487, 219/506, 219/489, 318/268-272, 318/305, 318/445, 318/446, 318/452, 318/456, 318/458, 318/461, 318/466, 318/484, 235/61 A, 310/68 R-68 B
• US Class Current: 318/484
• CPC Class Codes: H02P 25/14 Universal motors H02P25/12 takes precedence
• CPC Class Codes: Y10S 388/921 Timer or time delay means
• CPC Class Codes: Y10S 388/936 Food preparation equipment

Abstract

A cooking utensil provided with a device for selecting a rotational speed of the cooking utensil such as a mixer, a device for selecting a processing time thereof and an indicating device therefor in which when one of the names of food marked upon the indicating device is selected, a rotational speed or processing time for optimum processing of ingredients of a selected food may be automatically set.

Claims

1. In a food processing apparatus having means rotatably acting on foodstuffs for processing the foodstuffs;

and a motor for driving said rotatable processing means, apparatus for controlling the operation of said processing means, comprising;

a selection switch for selecting one of n-step speeds of said motor;

a rotatable indicator in the form of a prism having n side surfaces in parallel with the axis thereof, each of said n side surfaces having names of food marked thereupon which are intended to be processed at each of said n-step speeds of the motor;

means for rotating said indicator to bring one of said side surfaces to an indication position; and

means for operatively coupling said selection switch to said indicator to switch said selection switch to select the speed of the motor corresponding to the names of food marked upon the side surface of said indicator brought to said indication position.

2. A food processing control apparatus according to claim 1, further comprising:

a timer for setting a time interval during which said motor is driven; and

a pointer operatively coupled to said timer and being slidable in a direction parallel with the axis of rotation of said indicator over the side surface of said indicator located in the indication position for indicating a time interval set by said timer on said side surface, each of the names of food marked upon each of said side surfaces of the indicator being arranged in a corresponding relationship with a time interval to be set by said timer which is predetermined to be an optimum processing time for the associated food.

3. A food processing control apparatus according to claim 2, wherein:

said selection switch is of the rotary type including a rotatable shaft; and

said means for operatively coupling said selection switch to said indicator comprises an actuating disk securely fixed to the shaft of said selection switch and provided with a number of n actuating pins projecting therefrom in parallel with the axis of said selector switch shaft and in circumferentially equi-spaced relation with each other, said indicator being disposed with its axis in parallel with the axis of the selector switch shaft and provided with a number of n actuating pins projected therefrom in parallel with the axis of the indicator and in circumferentially equi-spaced relation with each other, a slider extending between said selection switch and said indicator, means for sliding said slider between two positions, two levers pivoted to the opposite end portions of said slider, stopper means provided on said slider for preventing each lever from rotating in one direction, said levers engaging with one of actuating pins of said actuating disk and one of actuating pins of said indicator respectively to rotate said selection switch and said indicator through an angle equivalent to 360°

/n when said slider is moved from one of said positions to the other position.

4. A food processing control apparatus according to claim 2, wherein:

said selection switch is of the rotary type and disposed with its axis in parallel with the axis of said indicator; and

said means for operatively coupling said selection switch to said indicator comprises a slider extending between said selection switch and said indicator, means for sliding said slider between two positions, means for operatively connecting said slider to said selection switch and said indicator only when said slider slides from one of said positions to the other position so as to rotate said selection switch and said indicator through an angle equivalent to 360°

/n, an engaging portion comprising teeth formed along one edge of said slider, the length of said engaging portion being less than the sliding distance of said slider, an engaging pawl pivoted to a stationary member adjacent to the mid point of said sliding distance and having a pointed end portion which engages said engaging portion of said slider, and means for biasing said engaging pawl toward a position substantially perpendicular to the direction of sliding movement of said slider, the length between the stationary pivot member and the pointed end of said engaging pawl being longer than that of the perpendicular from the stationary pivot member to the trough level of said teeth of said slider.

5. In a food processing apparatus having means rotatably acting on foodstuffs for processing the foodstuffs;

and a motor for driving said rotatable processing means, apparatus for controlling the operation of said food processing means, comprising;

a rotary type selection switch for selecting one of n-step speeds of said motor;

a rotatable indicator in the form of a prism fixed to a rotatable shaft and having n side surfaces in parallel with the axis thereof corresponding to said n-step speeds of the motor respectively and being disposed in coaxial relation with said selection switch so as to rotate in unison with the movable contact of said selection switch;

operating means for rotating said indicator through an angle equivalent to 360°

/n upon every operation so as to bring one of said side surfaces to an indication position;

a timer for setting a time interval during which said motor is driven;

a pointer operatively coupled to said timer and being slidable in a direction parallel with the axis of rotation of said indicator over the side surface of said indicator to an indication position for indicating a time interval set by said timer on said side surface, each of said n side surfaces having names of food marked thereupon which are intended to be processed at the speed of the motor corresponding to the associated side surface, each of the names of food marked upon each of said side surfaces being arranged in a corresponding relationship with a time interval to be set by said timer which is predetermined to be an optimum processing time for the associated food.

6. A food processing control apparatus according to claim 5, wherein said operating means for rotating said indicator comprises:

a clutch gear rotatably fitted over the shaft of said indicator and biased to move toward said indicator along the shaft thereof, said clutch gear engaging said indicator only in one direction of rotation thereof, and a pushbutton lever having a rack which engages teeth formed on the periphery of said clutch gear for rotating said clutch gear.

7. A food processing control apparatus according to claim 5, wherein said operating means for rotating said indicator comprises a pushbutton lever extending near the shaft of said indicator and being reciprocatively slidable between two positions in a direction perpendicular to the shaft of said indicator, a cam securely fixed to the shaft of said indicator and provided with n lobes, an actuating rod slidably mounted on said pushbutton lever and biased to move toward said cam in a direction substantially perpendicular to the direction of movement of said pushbutton lever for engagement with one of said lobes, each of said lobes being formed in such a configuration that when said pushbutton lever is moved toward one of said positions said cam is rotated through an angle equivalent to 360°

/n by said actuating rod in engagement with the associated lobe and when said pushbutton lever is moved toward the other position said actuating rod is retracted without imparting rotational movement to said cam.

8. A food processing control apparatus according to claim 7, wherein said shaft of the indicator is provided with n side surfaces in parallel with the axis thereof at one end portion thereof and a pair of leaf springs are disposed in opposite axial relation with each other and resiliently interposing said end portion of the shaft therebetween.

9. In a food processing apparatus having means rotatably acting on food for processing the food, a motor for driving said rotatable processing means, and a casing for housing therein said motor, apparatus for controlling the operation of said food processing means, comprising:

a control panel detachably attached to said casing, said control panel having mounted thereupon a selection switch for selecting one of n-step speeds of said motor;

means for actuating said selection switch;

a rotatable indicator having a number of n indicating surfaces in parallel with the axis thereof and operatively coupled to said selection switch to bring to an indication position one of said n indicating surfaces corresponding to the speed of said motor selected by said selection switch;

a timer for setting a time interval during which said motor is driven;

means for actuating said timer; and

a pointer operatively coupled to said timer and slidable in a direction parallel with the axis of rotation of said indicator for indicating a time interval set by said timer over the side surface of said indicator located in the indication position.