Handle for kitchen devices

Patent metadata

Field	Value
Publication number	US-9885394-B2
Application number	US-201514703460-A
Country	US
Kind code	B2
Filing date	May 4, 2015
Priority date	May 5, 2014
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

A knob/handle for kitchen devices having a rotary motion is provided. The knob/handle includes a handle body and a modified sprag clutch mechanism integrated into the handle body to enable rotation of the handle in one pre-designated direction for application of torque to a connected shaft. A hub is secured to the handle body and has one end in communication with the modified sprag clutch mechanism and an opposing end configured for connection to a shaft of a kitchen device.

First claim

What is claimed is:

1. A knob/handle for a kitchen device having a shaft capable of rotating in a predetermined rotation direction, the knob/handle comprising:
a handle body;
a sprag clutch mechanism disposed in the handle body; and
a hub disposed in the handle body and having one end in communication with the sprag clutch mechanism and an opposing end configured for connection to the shaft of the kitchen device; and
a locking mechanism configured to lock the handle body and enable rotation of the connected shaft in a direction opposite that of the predetermined rotation direction.

2. The knob/handle according to claim 1 , wherein the handle body comprises a receiving cavity integrated therein having inner walls, the sprag clutch mechanism further comprising:
an outer cage positioned within the receiving cavity;
an inner cage positioned within the outer cage; and
at least two sprag teeth positioned within the receiving cavity such that said teeth contact inner wall surfaces of said receiving cavity, said sprag teeth having a geometric configuration enabling rotation of the connected shaft in a single predetermined rotation direction of clockwise or counterclockwise.

3. The knob/handle according to claim 1 , further comprising a pin configured to secure said hub to the handle body and thereby retain said sprag clutch mechanism within said handle body.

4. The knob/handle according to claim 2 , wherein said outer cage further comprises a base having a plurality of spaced upward extending cage walls each having a bulbous end.

5. The knob/handle according to claim 2 , wherein said inner cage further comprises a base having at least one protruding leg and a plurality of spaced upwardly extending walls, each having a bulbous end.

6. The knob/handle according to claim 2 , further comprising a runner connecting the at least two sprag teeth are initially connected to each other, said runner being configured to break after an initial use of the knob/handle.

7. The knob/handle according to claim 2 , wherein
said outer cage further comprises a base having a plurality of spaced upward extending cage wails each having a bulbous end;
said inner cage further comprises a base having at least one protruding leg and a plurality of spaced upwardly extending walls, each having a bulbous end; and
wherein said at least two sprag teeth pass through said walls in said inner and outer cage to contact inner wall surfaces of said receiving cavity.

8. The knob/handle according to claim 1 , wherein the locking mechanism comprises:
a lock having a pawl, said lock being slidably positioned in the handle body; and
a plurality of teeth positioned around the hub, said pawl engaging at least one of said plurality of teeth when the lock is in slid into the locked position.

9. A device for a assisting in the rotation of a kitchen device having a rotary motion, the device comprising:
a body;
a sprag clutch mechanism disposed within the body; and
a means for disposing the sprag clutch mechanism into communication with rotary parts of the kitchen device, such that said sprag clutch mechanism enables one way rotation of the rotary parts of the kitchen device in a pre-determined rotation direction; and
a locking mechanism configured to lock the body and enable rotation of the connected rotary parts of the kitchen device in an opposite direction than that of the predetermined rotation direction.

10. The device according to claim 9 , wherein said body comprises a handle.

11. The device according to claim 9 , wherein said sprag clutch mechanism comprises:
an outer cage positioned within a receiving cavity of the handle;
an inner cage positioned within the outer cage; and
at least two sprag teeth positioned within the receiving cavity such that said teeth contact inner wall surfaces of said receiving cavity, said sprag teeth having a geometric configuration enabling rotation of the rotary parts of the kitchen device in a single predetermined rotation direction of clockwise or counterclockwise.

12. The device according to claim 11 , wherein said outer cage further comprises a base having a plurality of spaced upward extending cage walls each having a bulbous end.

13. The device according to claim 11 , wherein said inner cage further comprises a base having at least one protruding leg and a plurality of spaced upwardly extending walls, each having a bulbous end.

14. The device according to claim 11 , further comprising a runner connecting the at least two sprag teeth, said runner being configured to break after an initial use of the knob handle.

15. The device according to claim 11 , wherein,
said outer cage further comprises a base having a plurality of spaced upward extending cage walls each having a bulbous end;
said inner cage further comprises a base having at least one protruding leg and a plurality of spaced upwardly extending walls, each having a bulbous end; and
wherein said at least two sprag teeth pass through said walls in said inner and outer cage to contact inner wall surfaces of said receiving cavity.

16. The device of according to claim 11 , wherein said means for disposing the sprag clutch mechanism into communication with rotary parts of the kitchen device comprises a hub disposed within the body and having one end in communication with the sprag clutch mechanism and an opposing end configured for connection to the rotary parts of the kitchen device.

17. The device according to claim 9 , wherein the locking mechanism comprises:
a lock having a pawl, said lock being slidably positioned in the handle body; and
a plurality of teeth positioned around the hub, said pawl engaging at least one of said plurality of teeth when the lock is in slid into the locked position.

Assignees

• Lifetime Brands Inc

Inventors

• Drinkwater William Edwin

Classifications

• Y10T74/1526

  Oscillation or reciprocation to intermittent unidirectional motion · CPC title

• F16D41/073

  each member comprising at least two elements at different radii · CPC title

• F16D41/084

  the intermediate coupling members wedging by pivoting or rocking · CPC title

• F16D41/076 Primary

  the wedging coupling members being non-releasably joined to form a single annular piece, e.g. either the members being integral projections from the piece, or the piece being an elastic ring cast round the radial centres of the members · CPC title

• F16D41/069

  the intermediate members wedging by pivoting or rocking, e.g. sprags (F16D41/061 takes precedence) · CPC title