Blending appliance with paddle blade

Patent metadata

Field	Value
Publication number	US-9968223-B2
Application number	US-201615180933-A
Country	US
Kind code	B2
Filing date	Jun 13, 2016
Priority date	Jun 12, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A blending appliance is provided including a motorized base, a blending container, and a blade assembly fitted into an opening of the blending container and rotatably coupled to the motorized base when the blending container is mounted on the motorized base. The blade assembly includes a lower blade element disposed on a spindle performing blending operations on ingredients at a lower end of the blending container; and an upper working element disposed on a shaft spaced apart from the lower blade element, and including an upper working portion and a lower working portion spaced apart from the upper working portion. The upper working portion acting to reduce cavitation in the lower blades element during the blending process.

First claim

What is claimed is:

1. A blending appliance, comprising:
a motorized base;
a blending container; and
an blade assembly fitted into an opening of the blending container and rotatably coupled to the motorized base when the blending container is mounted on the motorized base, the blade assembly including:
a central shaft having a lower end and a free upper end;
a lower blade element disposed proximal to the lower end of the central shaft for performing blending operations on ingredients at a lower end of the blending container; and
an upper working element disposed proximal to the free upper end of the central shaft, spaced apart from the lower blade element, and including;
an upper working portion having a first and second wing portions extending radially outward from the central shaft in opposite directions, wherein the first and second wing portions are at an acute angle from a longitudinal axis of the central shaft; and
a lower working port spaced apart a distance below the upper working portion, and having a first and second wing portions extending radially outwardly from the central shaft in opposite directions.

2. The blending appliance as set forth in claim 1 , wherein the lower blade element includes a top blade form including opposing wing portions angled upward.

3. The blending appliance as set forth in claim 1 , wherein the lower blade element includes a bottom blade form including opposing wing portions angled downward.

4. The blending appliance as set forth in claim 3 , wherein the lower blade element includes a mid-blade form including opposing wing portions angled upward.

5. The blending appliance as set forth in claim 1 , wherein the first wing portion of the upper working portion is angled upward with respect to the central shaft and the second winged portion of the upper working portion is angled downward with respect to the central shaft.

6. The blending appliance as set forth in claim 5 , wherein the first and second wing portions of the upper working portion are twisted.

7. The blending appliance as set forth in claim 1 , wherein each of the first and second wing portions of the lower working portion are twisted.

8. The blending appliance as set forth in claim 1 , wherein the first and second wing portions of the upper working portion are positioned at an angle between 20°-40° with respect to a horizontal plane perpendicular to the longitudinal axis of the central shaft.

9. The blending appliance as set forth in claim 1 , wherein the first wing portion of the upper working portion is positioned at an upward angle between 20°-40° with respect to a horizontal plane perpendicular to the longitudinal axis of the central shaft, and the second wing portion of the upper working portion is positioned at a downward angle between 20°-40° with respect to the horizontal plane perpendicular to the longitudinal axis of the central shaft.

10. A blender blade assembly, comprising:
a central shaft having a lower end and a free upper end;
a lower blade element disposed proximal to the lower end of the central shaft for performing blending operations on ingredients at a lower end of the blending container; and
an upper working element disposed on the free upper end of the central shaft spaced apart from the lower blade element including:
an upper working portion having a first and second wing portions extending radially outward from the central shaft in opposite directions, wherein the first and second wing portions are at an acute angle from a longitudinal axis of the central shaft; and
a lower working portion spaced apart a distance below the upper working portion, and having a first and second wing portions extending radially outwardly from the central shaft in opposite directions.

11. The blender blade assembly as set forth in claim 10 , wherein the lower blade element includes a top blade form including opposing wing portions angled upward.

12. The blender blade assembly as set forth in claim 11 , wherein the lower blade element includes a bottom blade form including opposing wing portions angled downward.

13. The blender blade assembly as set forth in claim 12 , wherein the lower blade element includes a mid-blade form including opposing wing portions angled upward.

14. The blade assembly for use with a blender appliance of claim 12 , wherein the first wing portion of the upper working portion is angled upward and the second winged portion of the upper working portion is angled downward.

15. The blender blade assembly of claim 10 , wherein the first wing portion of the upper working portion is angled upward with respect to the central shaft and the second winged portion of the upper working portion is angled downward with respect to the central shaft.

16. The blender blade assembly as set forth in claim 15 , wherein the first and second wing portions of the upper working portion are twisted.

17. The blender blade assembly as set forth in claim 10 , wherein each of the first and second wing portions of the lower working portion are twisted.

18. The blender blade assembly as set forth in claim 10 , wherein the first and second wing portions of the upper working portion are positioned at an angle between 20°-40° with respect to a horizontal plane perpendicular to the longitudinal axis of the central shaft.

19. The blender blade assembly as set forth in claim 10 , wherein the first wing portion of the upper working portion is positioned at an upward angle between 20°-40° with respect to a horizontal plane perpendicular to the longitudinal axis of the central shaft, and the second wing portion of the upper working portion is positioned at a downward angle between 20°-40° with respect to the horizontal plane perpendicular to the longitudinal axis of the central shaft.

20. A blade assembly for use with a blending appliance, comprising:
a central shaft having a lower end and a free upper end;
a lower blade element disposed proximal to the lower end of the central shaft for performing blending operations on ingredients at a lower end of the blending container; and
an upper working element positioned proximal to the free upper end of the central shaft, spaced apart from the lower blade element, and including:
an upper working portion having a first and second wing portions extending radially outward from the central shaft in opposite directions, wherein the first and second wing portions of the upper working portion are positioned at an angle between 20°-40° with respect to a horizontal plane perpendicular to the longitudinal axis of the central shaft; and
a lower working portion spaced apart a distance below the upper working portion, and having a first and second wing portions extending radially outwardly from the central shaft in opposite directions, wherein the first and second wing portions of the lower working portion are twisted between 20°-35° with respect to the horizontal plant.

Assignees

• Sunbeam Products Inc

Inventors

• Behar Moises
• Spencer Jr Joseph C

Classifications

• A47J43/085 Primary

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

• A47J43/046 Primary

  with tools driven from the bottom side · CPC title

• A47J43/0722

  Mixing, whipping or cutting tools · CPC title

• A47J31/4403

  Constructional details · CPC title

• B01F13/1044

  Operations & Transport · mapped topic