Kitchen appliance arrangement with portable unit

• US 4,575,255 A
• Filed: 09/07/1982
• Issued: 03/11/1986
• Est. Priority Date: 09/07/1982
• Status: Expired due to Fees

• Current Assignee: Barbara Kafka
• Original Assignee: Barbara Kafka
• Inventors: Kafka, Barbara
• Primary Examiner(s): Simone, Timothy F.
• Application Number:
  US06/415,272
• Time in Patent Office: 1,281 Days
• Field of Search: 366/129, 366/130, 366/108, 366/297, 366/300, 366/278, 366/601, 366/199, 366/261, 366/288, 366/342-344, 15/22 R, 15/23, 15/26, 320/2
• US Class Current: 366/129
• CPC Class Codes: A47J 2043/04427 with housing extending vertically in line with the tool axis
• CPC Class Codes: A47J 2043/0738 Means for storing accessories
• CPC Class Codes: A47J 43/044 with tools driven from the top side
• CPC Class Codes: A47J 43/08 Driving mechanisms
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: Y10S 366/601 Motor control

Abstract

A base is provided for holding a detachable and portable casing to which may be attached a kitchen appliance unit, such as whisk, a spatula, a mixer or the like. These kitchen appliance units fit into receptacles whereat they are accommodated for storage, these units and the portable casing extending vertically upwards from the base. For an operation a unit may be detachably inserted into the portable case which houses a gear train, as well as a motor for driving the same. The portable case, moreover, accommodates a rechargeable battery arrangement for driving the motor. In the portable case, is accommodated one half of a recharging unit consisting of a secondary winding of a transformer and a coil which is encircled thereby. The primary winding and associated core is accommodated in the base. When the portable casing is accommodated in the base, the cores are juxtaposed in coaxial alignment, whereby an alternating current source coupled to the primary winding charges the rechargeable battery arrangement.

Claims

1. Apparatus comprising a portable casing adapted for being grasped in and manipulated by the hand of a user, a motor in said casing, a battery in said casing and coupled to said motor for driving the latter, a first kitchen appliance unit supported by and extending from said casing and coupled to and driven by said motor, reduction gear means coupling said motor to said kitchen appliance unit, a plurality of different kitchen appliance units wherein the appliance units, including the first said appliance unit, are detachably and selectively insertable in part into said casing for being driven by said motor, and a base provided with a receptacle for holding said portable casing and a plurality of receptacles for holding said appliance units, wherein said first kitchen applicance unit includes a first shaft coaxial with said motor, and a mixing means on said shaft and having an axis parallel with, but concentrically related to, said shaft.

2. Apparatus as claimed in claim 1, wherein said mixing means includes a block on said shaft and is provided with a circular arrangement of holes concentric with said axis, said holes being arranged in diametrally opposed pairs, and U-shaped wires having a span greater than the distance between the holes of said pairs and including free ends accommodated in said holes, said wires cooperatively creating a bulbous shape.

3. Apparatus as claimed in claim 2, wherein said wires are of stainless steel.

4. Apparatus as claimed in claim 1, wherein said kitchen appliance unit includes a shaft and a mixing means, which includes a coil of wire on said shaft, said coil including a first section of generally constant diameter and a second section in axial extension of said first section and of varying diameter.

5. Apparatus as claimed in claim 4, wherein said first section includes a plurality of turns in mutually contacting relation.

6. Apparatus as claimed in claim 5, wherein said second section includes spaced turns.

7. Apparatus as claimed in claim 6, wherein the turns of the second section differ in diameter increasing in progression away from the first section to a maximum and thereafter decreasing.

8. Apparatus as claimed in claim 1, wherein the reduction gear means has a reduction ratio in the order of magnitude of 7:

27.

9. Apparatus as claimed in claim 8, wherein the motor has a speed in the order of magnitude of about 10,800 R.P.M.

10. Apparatus as claimed in claim 1, wherein the reduction gear means has a reduction ratio in the order of magnitude of 7:

27.

11. Apparatus as claimed in claim 10, wherein the motor has a speed in the order of magnitude of about 10,800 R.P.M.

12. Apparatus as claimed in claim 9, wherein said motor is a D.C. permanent magnet motor having an operating range of about 2.0-3.6 volts and no load current of about 0.54 amperes.

13. Apparatus as claimed in claim 1 comprising a base provided with a receptacle for holding said portable casing and a receptacle for holding said kitchen appliance unit.

14. Apparatus as claimed in claim 1, wherein said battery is of rechargeable construction and wherein said base includes means for recharging said battery.

15. Apparatus as claimed in claim 13, wherein said battery is of rechargeable construction, comprising recharging means to recharge said battery.

16. Apparatus as claimed in claim 15, wherein said recharging means includes a transformer including a primary winding in said base and a magnetic case operatively associated therewith, and a secondary winding in said portable casing and a magnetic core operatively associated therewith, said cores being juxtaposed with said portable casing in the first said receptacle in said base.

17. Apparatus as claimed in claim 16, wherein said battery is electrically connected across said secondary winding, comprising a rectifying means between said secondary winding and battery.

18. Apparatus as claimed in claim 1, wherein said portable casing and appliance units extend vertically upwards from said base.

19. Apparatus as claimed in claim 1 comprising a holder coupling the gear means to said unit and driving at about 726 R.P.M at no load.