Cutting tool

Patent metadata

Field	Value
Publication number	US-12408593-B2
Application number	US-202017795744-A
Country	US
Kind code	B2
Filing date	Nov 26, 2020
Priority date	Jan 29, 2020
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A cutting tool ( 100 ) includes a top blade ( 102 ) and a bottom blade ( 104 ). The bottom blade ( 104 ) is pivotally coupled to the top blade ( 102 ). The top blade ( 102 ) and the bottom blade ( 104 ) together perform a cutting action on an object place between them. A first handle ( 108 ) is operatively coupled with the top blade ( 102 ). The first handle ( 108 ) defines a front portion ( 109 ) and a back portion ( 111 ). A second handle ( 110 ) is operatively coupled with the bottom blade ( 104 ). The cutting tool ( 100 ) is characterized in that in closed position of the cutting tool ( 100 ), at least a part of the second handle ( 110 ) at least partially encloses the back portion ( 111 ) of the first handle ( 108 ).

First claim

The invention claimed is:

1. A cutting tool comprising:
a top blade;
a bottom blade pivotally coupled to the top blade, wherein the top blade and the bottom blade together perform a cutting action on an object placed therebetween;
a first handle operatively coupled with the top blade, wherein the first handle comprises a front portion, a back portion and a first inner side; and
a second handle operatively coupled with the bottom blade;
wherein, in a closed position of the cutting tool, at least a part of the second handle at least partially encloses the back portion of the first handle, and
wherein the cutting tool further comprises a drive unit and a slider or trigger to activate and deactivate the drive unit,
wherein the drive unit is configured to selectively provide a supplementary motor force to assist pivoting the top blade relative to the bottom blade,
wherein the slider or trigger is disposed at the second handle and operable by a user of the cutting tool to power on and power off the drive unit and to selectively provide the supplementary motor force via the drive unit,
wherein the second handle comprises a recess defined by a second inner side of the second handle,
wherein the first inner side and the second inner side are both arcuate and the first handle is conformal with the second handle in the closed position, and
wherein the second handle comprises the recess in which the first handle is arrangeable or arranged in the closed position of the cutting tool, wherein a wall of the second handle forming the recess has a contour of an arc-shaped or curved contour, corresponding to a contour of an arc-shaped or curved contour, of the first handle such that the corresponding contours of first and second handle are arrangeable or arranged closely adjacent to each other in the closed position of the cutting tool.

2. The cutting tool of claim 1 , wherein a battery of the drive unit is housed within the second handle.

3. The cutting tool of claim 2 , wherein the drive unit comprising a motor, a gearbox, a drum, Printed Circuit Board Assembly (PCBA) and the battery to selectively provide the supplementary motor force, wherein the drive unit is enclosed within the second handle.

4. The cutting tool of claim 2 , wherein the drive unit is operatively coupled to at least one of the top blade and the bottom blade.

5. The cutting tool of claim 1 , wherein at least the second handle comprises two half-shells forming a cavity in an assembled state of the second handle, wherein the drive unit is arrangeable or arranged in the cavity, wherein at least one of the half-shells comprises one or two or more reinforcement structures in a form of reinforcement and support ribs or reinforcement and support walls, which are configured to support components of the drive unit arrangeable or arranged in the cavity and to reinforce the outer handle wall of the second handle against deformation caused during cutting action.

6. The cutting tool of claim 5 , wherein a first half-shell comprises a plurality of connection domes including thread domes, which structurally reinforce the outer wall of the second handle, wherein four connection domes are arranged to define a quadrilateral plane in which at least one component of the drive unit comprising a sub-unit including a gear box or a drum or a sub-unit including a motor or a battery or a printed circuit board assembly (PCBA), is arranged.

7. The cutting tool of claim 1 , wherein the second handle comprises at least one end portion and at least one central portion, wherein the at least one end portion defines a first width and the at least one central portion defines a second width being different from the first width, wherein the first width is at least 1.4 times the second width.

8. The cutting tool of claim 7 , wherein the first handle defines a third width, wherein a difference of the first width minus the second width substantially equals the third width.

9. The cutting tool of claim 8 , wherein the first width, the second width or the third width lie within the same plane, wherein the same plane corresponds to a plane in which a closing movement of the first and second handle or of the top and bottom blade occurs.

10. The cutting tool of claim 1 , wherein a length of the first handle extending from the front portion to the back portion is between 30% and 70% of a length of the second handle.

11. The cutting tool of claim 1 , wherein the first handle is operably coupled to the second handle via an adapter disposed within the first handle, and
wherein the adapter is operably coupled to the top blade such that the top blade extends through the adapter within the first handle.

12. A cutting tool comprising:
a top blade;
a bottom blade pivotally coupled to the top blade, wherein the top blade and the bottom blade together perform a cutting action on an object placed therebetween;
a first handle operatively coupled with the top blade, wherein the first handle defines a front portion and a back portion; and
a second handle operatively coupled with the bottom blade;
wherein, in a closed position of the cutting tool, at least a part of the second handle at least partially encloses the back portion of the first handle,
wherein a drive unit disposed within the second handle comprises a motor, a gearbox, a drum, Printed Circuit Board Assembly (PCBA) and a battery to selectively provide supplemental motor force, wherein the drive unit is enclosed within the second handle,
wherein the second handle defines a longitudinal axis corresponding to an axis of a drive shaft of the drive unit, wherein the motor, the gear box, the drum, and a bearing for supporting the drive shaft are all disposed coaxially along the longitudinal axis,
wherein the battery or the printed circuit board assembly is arranged laterally offset to the motor or the gear box or the drum or the bearing for supporting the drive shaft relative to the longitudinal axis, and
wherein the cutting tool further comprises a slider or trigger to activate and deactivate the drive unit,
wherein the drive unit is configured to selectively provide a supplementary motor force to assist a movement of at least one of the top blade and the bottom blade, and
wherein the slider or trigger is disposed at the second handle and operable by a user of the cutting tool to power on and power off the drive unit and to selectively provide the supplementary motor force via the drive unit.

13. The cutting tool of claim 12 , wherein the first handle is operably coupled to the second handle via an adapter disposed within the first handle, and
wherein the adapter is operably coupled to the top blade such that the top blade extends through the adapter within the first handle.

Assignees

• Husqvarna Ab

Inventors

• Rudolf Peter
• Rauch Martin

Classifications

• B26B15/00

  Hand-held shears with motor-driven blades · CPC title

• A01G3/037 Primary

  the driving means being an electric motor · CPC title

• B26B13/285

  with means for applying pressure on the blades; with means for producing "drawing-cut" effect · CPC title

• B26B13/16 Primary

  spring loaded, e.g. with provision for locking the blades or the handles · CPC title