Kitchen device

Patent metadata

Field	Value
Publication number	US-12268335-B2
Application number	US-202017442348-A
Country	US
Kind code	B2
Filing date	Mar 23, 2020
Priority date	Mar 25, 2019
Publication date	Apr 8, 2025
Grant date	Apr 8, 2025

Abstract

A kitchen device ( 100 ) including: abase ( 102 ) having a mechanism ( 118 ) that is operated using electrical power to cause processing of food; a vessel ( 104 ) removably mounted on the base ( 102 ) and including a bottom wall ( 108 ), a side wall ( 110 ) extending upwardly from the bottom wall ( 108 ) to a rim ( 112 ) so as to provide a space ( 114 ) to receive the food to be processed, with the rim ( 112 ) surrounding an opening ( 116 ) to the space ( 114 ); a lid ( 106 ) removably coupled to the rim ( 112 ) so as to at least partially close the opening ( 116 ); and an interlock system ( 120 ) operatively associated with the mechanism ( 118 ) to permit the delivery of the electric power to the mechanism ( 118 ), the system ( 120 ) including a first interlock circuit ( 122 ) and a second interlock circuit ( 124 ), wherein delivery of the electric power to the mechanism ( 118 ) is permitted by the completion of the first interlock circuit ( 122 ) and activation of the second interlock circuit ( 124 ), wherein the first interlock circuit ( 122 ) includes a first coupling ( 126 ) to complete the first circuit ( 122 ), the first coupling ( 126 ) including a first portion ( 128 ) mounted to the lid ( 106 ) and a second portion ( 130 ) mounted to the vessel ( 104 ) adjacent the rim ( 112 ) so that the first portion ( 128 ) is located adjacent the second portion ( 130 ) when the lid ( 106 ) is coupled to the rim ( 112 ) thereby completing the first circuit ( 122 ), and wherein the second interlock circuit ( 124 ) includes a second coupling ( 136 ) to activate the second interlock circuit ( 124 ), the second coupling ( 136 ) including a first portion ( 138 ) that is part of the second interlock circuit ( 124 ) and mounted to the base ( 102 ), the first portion ( 138 ) being operatively associated with a second portion ( 140 ) that is mounted to the vessel ( 104 ) and part of the first interlock circuit ( 122 ), wherein completion of the first interlock circuit ( 122 ) causes operation of the second portion ( 140 ) of the second coupling ( 136 ), thereby causing operation of the first portion ( 138 ) of the second coupling ( 136 ) to thus activate the second interlock circuit ( 124 ) and permit delivery of the electric power to the mechanism ( 118 ).

First claim

The invention claimed is:

1. A kitchen device including:
a base having a mechanism that is operated using electrical power to cause processing of food;
a vessel removably mounted on the base and including a bottom wall, a side wall extending upwardly from the bottom wall to a rim so as to provide a space to receive the food to be processed, with the rim surrounding an opening to the space;
a lid removably coupled to the rim so as to at least partially close the opening; and
an interlock system operatively associated with the mechanism to permit the delivery of the electric power to the mechanism, the system including a first interlock circuit and a second interlock circuit, wherein delivery of the electric power to the mechanism is permitted by the completion of the first interlock circuit and activation of the second interlock circuit,
wherein the first interlock circuit includes a first coupling to complete the first interlock circuit, the first coupling including a first portion mounted to the lid and a second portion mounted to the vessel adjacent the rim so that the first portion is located adjacent the second portion when the lid is coupled to the rim thereby completing the first interlock circuit,
wherein the second interlock circuit includes a second coupling to activate the second interlock circuit, the second coupling including a first portion that is part of the second interlock circuit and mounted to the base, the first portion is a receiver including a photodiode being operatively associated with a second portion that is mounted to the vessel and part of the first interlock circuit, the second portion is a transmitter including a light emitting diode, wherein completion of the first interlock circuit causes operation of the transmitter thereby causing operation of the receiver to thus activate the second interlock circuit and permit delivery of the electric power to the mechanism,
wherein the first interlock circuit further includes a receiver coil and the base includes a transmitter coil, and
wherein the receiver coil is configured to receive electrical power from the transmitter coil to operate the light emitting diode when the first interlock circuit is completed.

2. The kitchen device of claim 1 , wherein the lid includes a lid base that engages the rim, with the first portion of the first coupling being mounted to the lid base.

3. The kitchen device of claim 1 , wherein the lid includes a lid base to engage the rim,
a feed tube extending from the lid base and communicating with the space to deliver food to the space through the feed tube, and
a pusher member slidably received in the feed tube to move the food along the feed tube to the space,
wherein the first portion and second portion of the first coupling include electrical contacts on the lid base and vessel, respectively, and
wherein the first coupling further includes:
a third portion associated with the feed tube, and
a fourth portion associated with the pusher member, such that the first interlock circuit is completed when the pusher member is in the feed tube and the lid is coupled to the rim.

4. The kitchen device according to claim 1 , wherein
the transmitter is arranged in a watertight manner.

5. The kitchen device according to claim 1 , wherein the transmitter includes an infrared (IR) light emitting diode, and wherein the receiver includes an IR sensitive photodiode.

6. The kitchen device according to claim 1 , wherein the transmitter includes a radio-frequency (RF) transmitter, and wherein the receiver includes a radio-frequency (RF) receiver.

7. The kitchen device according to any one of claim 1 , wherein the second interlock circuit further comprises a plurality of transistors connected in series to operate a relay to permit delivery of the electric power to the mechanism, each transistor having a base line connected to the first portion of the second coupling so that operation of the first portion of the second coupling causes a current to flow through the plurality of transistors, thereby activating the second interlock circuit and operating the relay.

8. The kitchen device according to claim 7 , wherein each base line is connected to a first plurality of resistors connected in series, and wherein the base lines of all transistors commonly connect to a second plurality of resistors connected in series before connecting to a source of electrical power.

9. The kitchen device according to claim 8 , wherein the second plurality of resistors includes a first portion of resistors connected in series and a second portion of resistors connected in parallel.

10. The kitchen device according to any one of claim 1 , further including:
at least one sensor mounted to the base, the at least one sensor includes a vessel sensor configured to determine whether the vessel is received on the base; and
a processor located within the base configured to receive an indication from the vessel sensor that the vessel is received on the base, wherein the processor is configured to prevent delivery of the electric power to the mechanism.

11. The kitchen device according to claim 10 , wherein the at least one sensor comprises at least one of:
a load sensor that determines a load of the vessel:
a temperature sensor that determines a temperature of the vessel; and
a proximity sensor that determines a presence of the vessel.

12. The kitchen device according to any one of claim 1 , wherein the mechanism includes a motor.

13. The kitchen device according to any one of claim 1 , wherein the mechanism includes a heating element.

14. The kitchen device according to any one of claim 1 , wherein the kitchen device includes a plurality of first portions of the second coupling, and a plurality of second portions of the second coupling.

15. The kitchen device according to claim 14 , wherein any second portion of the second coupling is adapted to operate any first portion of the second coupling.

16. A method of permitting delivery of electric power to a mechanism of a kitchen device for processing food, the kitchen device having:
a base, the mechanism mounted in the base and operable using electrical power to cause processing of food;
a vessel removably mounted on the base and including a bottom wall, a side wall extending upwardly from the bottom wall to a rim so as to provide a space to receive the food to be processed, with the rim surrounding an opening to the space;
a lid removably coupled to the rim so as to at least partially close the opening;
a first interlock circuit located in the vessel includes a first coupling to complete the first interlock circuit, the first coupling including a first portion mounted to the lid and a second portion mounted to the vessel adjacent the rim so that the first portion is located adjacent the second portion when the lid is coupled to the rim thereby completing the first interlock circuit; and
a second interlock circuit located in the base includes a second coupling to activate the second interlock circuit, the second coupling including a first portion that is part of the second interlock circuit and mounted to the base, the first portion is a receiver including a photodiode being operatively associated with a second portion that is mounted to the vessel and part of the first interlock circuit, the second portion is a transmitter including a light emitting diode, wherein completion of the first interlock circuit causes operation of the transmitter, thereby causing operation of the receiver to activate the second interlock circuit and permit delivery of the electric power to the mechanism

Assignees

• Breville R & D Pty Ltd

Inventors

• Antkowiak Margaret
• Jones Richard Llewelyn
• Widanagamage Don Lochana Subasekara
• Tiburzio Sebastien

Classifications

• A47J43/0465

  with magnetic drive · CPC title

• A47J43/085

  for machines with tools driven from the lower side (A47J43/087, A47J43/09 take precedence) · CPC title

• A47J43/0766

  activated by the proper positioning of the mixing bowl · CPC title

• H02J50/10 Primary

  using inductive coupling · CPC title

• H02J50/90

  involving detection or optimisation of position, e.g. alignment · CPC title