Food processor with a pulse button motor control arrangement

• US 5,845,991 A
• Filed: 06/11/1997
• Issued: 12/08/1998
• Est. Priority Date: 06/12/1996
• Status: Expired due to Fees

• Current Assignee: Ab Hallde Maskiner
• Original Assignee: Ab Hallde Maskiner
• Inventors: Sundquist, Jarl
• Primary Examiner(s): Cooley, Charles E.
• Application Number:
  US08/872,968
• Time in Patent Office: 545 Days
• Field of Search: 366/96-98, 366/100, 366/197, 366/205, 366/206, 366/314, 366/601, 241/36
• US Class Current: 366/206
• CPC Class Codes: A47J 43/085 for machines with tools driven from the lower side A47J43/087, A47J43/09 take precedence
• CPC Class Codes: Y10S 366/601 Motor control

Abstract

A food processor of the blender or mixer type that includes a machine stand (1), a basin (2) for receiving the foodstuff or foodstuffs to be prepared, a basin lid (3), and one or more knives located on the bottom of the basin and driven by a drive shaft that projects up vertically through the bottom of the basin. The processor is adapted to operate at a speed set by a setting device (5) by virtue of a control circuit (6) or like device that is adapted to cause the motor (7) of the processor to rotate at a speed set by the setting device.

The control circuit (6) functions to control the motor (7) to its full speed from a selected, set speed in response to an electric signal (9) from a pulse button (8) for the duration of the signal from the pulse button (8); and in that the control circuit (6) is adapted to control the motor (7) back to the set selected speed when the signal (9) from the pulse button (8) ceases.

Claims

1. A food processor comprising:

a machine stand, a basin for receiving a foodstuff to be prepared, a basin lid, and at least one knife located within the basin and driven by a drive shaft that projects up vertically into the basin, a drive motor coupled to the drive shaft, a manually operable motor speed setting device, a control circuit connected with the speed setting device and with the motor to control the motor to rotate at a speed set by the speed setting device, a pulse button coupled to the control circuit for providing an electrical signal to the control circuit, wherein the control circuit controls the motor to operate at full speed from a selected, set speed in response to the electrical signal from the pulse button and for the time duration of the electrical signal from said pulse button; and

wherein the control circuit controls the motor to rotate at a speed set by the speed setting device when the signal from the pulse button ceases.

2. A food processor according to claim 1, wherein the time duration of the pulse button electrical signal is the time period during which the pulse button is operated.