Trimmer

Patent metadata

Field	Value
Publication number	US-11785887-B2
Application number	US-202117219990-A
Country	US
Kind code	B2
Filing date	Apr 1, 2021
Priority date	Apr 9, 2020
Publication date	Oct 17, 2023
Grant date	Oct 17, 2023

Abstract

A trimmer has a guide tube and a tool unit connected to an end of the guide tube. A handlebar is secured to the guide tube and has handles connected to a respective end of the bar of the handlebar. Each handle has a shaft with a fastening end and a free end. The fastening end is provided to secure the handle on the power tool. The handles each have a front side facing the tool unit of the guide tube end and an oppositely positioned rear side. The handles each have an inner side and an outer side, wherein the inner sides face each other and wherein the outer sides face away from each other. At least one of the handles is provided with a heel of hand support designed as an elevation extending at the inner side and at the rear side of the shaft.

First claim

What is claimed is:

1. A trimmer comprising:
a guide tube;
a tool unit connected to a tool unit end of the guide tube;
a handlebar comprising a bar secured to the guide tube and further comprising handles, wherein each handle is arranged at a respective end of the bar;
wherein the handles each comprise a shaft comprising a fastening end and a free end, the fastening end configured to secure the handle to the end of the bar;
wherein the handles each comprise a front side facing the tool unit end of the guide tube and an oppositely positioned rear side;
wherein the handles each comprise an inner side and an outer side, wherein the inner sides face each other and wherein the outer sides face away from each other;
wherein at least one of the handles comprises a heel of hand support configured as an elevation extending at the inner side and at the rear side of the shaft;
wherein the heel of hand support comprises a heel of hand support surface;
wherein the heel of hand support surface is configured to extend between two parallel planes, wherein the two parallel planes are arranged at a distance of less than 3 mm from each other;
wherein a length of the heel of hand support surface measured in a direction of a longitudinal axis of the at least one handle amounts to at least 2.5 cm and wherein a width of the heel of hand support surface amounts to at least 8 mm.

2. The trimmer according to claim 1 , wherein the rear side at the heel of hand support surface of the heel of hand support in a section plane perpendicular to the longitudinal axis of the at least one handle comprises a radius of at least 10 mm at every location.

3. The trimmer according to claim 1 , wherein the rear side at the heel of hand support surface of the heel of hand support is approximately planar in a section plane perpendicular to the longitudinal axis of the at least one handle.

4. The trimmer according to claim 1 , wherein the heel of hand support is arranged at a half of the handle adjoining the fastening end.

5. The trimmer according to claim 1 , wherein the handles each have a different shape.

6. The trimmer according to claim 1 , wherein the handles include a right handle and a left handle, viewed in a direction toward the tool unit, wherein the right handle is larger than the left handle.

7. The trimmer according to claim 1 , wherein at least one of the handles in at least one section of the shaft is provided with a rubber coating.

8. The trimmer according to claim 1 , wherein the at least one handle comprises an operating element, wherein the operating element is configured to pivot about a pivot axis, and wherein the heel of hand support surface of the heel of hand support, viewed in a section extending perpendicularly to the longitudinal axis of the at least one handle, is inclined at an angle in relation to the pivot axis of the operating element, wherein the angle at every point thereof is less than 45°.

9. The trimmer according to claim 8 , further comprising a drive motor, wherein the operating element is configured to adjust a rotary speed of the drive motor.

10. The trimmer according to claim 1 , wherein:
a first operating element is pivotably supported about a first pivot axis at the shaft of the at least one handle;
a second operating element is pivotably supported about a second pivot axis at the shaft of the at least one handle;
the first operating element is configured to control a drive motor of the trimmer;
the second operating element is configured to prevent, in a non-actuated position of the second operating element, a control action of the drive motor by the first operating element;
the second operating element comprises an actuating section projecting from the shaft in the non-actuated position of the second operating element;
the actuating section comprises a first end and a second end, wherein the first end is positioned closer to the fastening end of the shaft and the second end is positioned closer to the free end of the shaft;
the second pivot axis is positioned closer to the first end of the actuating section than to the second end of the actuating section.

11. A trimmer comprising:
a guide tube;
a tool unit connected to a tool unit end of the guide tube;
a handlebar comprising a bar secured to the guide tube and further comprising handles, wherein each handle is arranged at a respective end of the bar;
wherein the handles each comprise a shaft comprising a fastening end and a free end, the fastening end configured to secure the handle to the end of the bar;
wherein the handles each comprise a front side facing the tool unit end of the guide tube and an oppositely positioned rear side;
wherein the handles each comprise an inner side and an outer side, wherein the inner sides face each other and wherein the outer sides face away from each other;
wherein at least one of the handles comprises a heel of hand support configured as an elevation extending at the inner side and at the rear side of the shaft;
wherein a maximum distance of the heel of hand support in relation to a longitudinal axis of the at least one handle amounts to at least 0.7 times a diameter of the shaft of the at least one handle, wherein the diameter is measured perpendicularly to the maximum distance and perpendicularly to the longitudinal axis of the at least one handle.

12. The trimmer according to claim 11 , wherein the rear side at a heel of hand support surface of the heel of hand support in a section plane perpendicular to the longitudinal axis of the at least one handle comprises a radius of at least 10 mm at every location.

13. The trimmer according to claim 11 , wherein the rear side at a heel of hand support surface of the heel of hand support is approximately planar in a section plane perpendicular to the longitudinal axis of the at least one handle.

14. The trimmer according to claim 11 , wherein the heel of hand support is arranged at a half of the handle adjoining the fastening end.

15. The trimmer according to claim 11 , wherein the handles each have a different shape.

16. The trimmer according to claim 11 , wherein the handles include a right handle and a left handle, viewed in a direction toward the tool unit, wherein the right handle is larger than the left handle.

17. The trimmer according to claim 11 , wherein at least one of the handles in at least one section of the shaft is provided with a rubber coating.

18. The trimmer according to claim 11 , wherein:
a first operating element is pivotably supported about a first pivot axis at the shaft of the at least one handle;
a second operating element is pivotably supported about a second pivot axis at the shaft of the at least one handle;
the first operating element is configured to control a drive motor of the trimmer;
the second operating element is configured to prevent, in a non-actuated position of the second operating element, a control action of the drive motor by the first operating element;
the second operating element comprises an actuating section projecting from the shaft in the non-actuated position of the second operating element;
the actuating section comprises a first end and a second end, wherein the first end is positioned closer to the fastening end of the shaft and the second end is positioned closer to the free end of the shaft;
the second pivot axis is positioned closer to the first end of the actuating section than to the second end of the actuating section.

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Bicheier Liv
• Mandel Roland
• Haug Simon

Classifications

• A01D34/902 Primary

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