File for filing the cutting tooth of a saw chain

Patent metadata

Field	Value
Publication number	US-11007589-B2
Application number	US-201916588636-A
Country	US
Kind code	B2
Filing date	Sep 30, 2019
Priority date	Apr 20, 2017
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

The disclosure relates to a file for filing a saw tooth of a saw chain. The file includes a file body defining a circumferential direction and a circumference. The file body, in a cross section, has an unhewn guide surface and a file surface adjoining the unhewn guide surface in the circumferential direction. The unhewn guide surface extends over at least ⅙ of the circumference in the cross section.

First claim

What is claimed is:

1. A file for filing a saw tooth of a saw chain, the file comprising:
a file body defining a circumferential direction and a circumference;
said file body, in a cross section, having an unhewn guide surface and a file surface adjoining said unhewn guide surface in the circumferential direction;
said unhewn guide surface extending over at least ⅙ of said circumference in said cross section, wherein: said file surface is a first file surface; said file body has a second file surface adjoining said first file surface in the circumferential direction; and, said first file surface, said second file surface, and said unhewn guide surface are realized in a straight manner in cross section;
said file body further defining a longitudinal center axis;
said first file surface defining a length ( 1 ); and,
said file body having, along at least 30% of said length ( 1 ) of said first file surface, an indicator which indicates a rotational position of said file body about said longitudinal center axis.

2. The file of claim 1 , wherein:
said file body has a width (w) measured parallel to said unhewn guide surface; and,
said width (w), in at least one region of said cross section, increases with increasing distance from said unhewn guide surface.

3. The file of claim 1 , wherein:
said unhewn guide surface and said first file surface conjointly enclose a first angle (α′) of greater than 90°; and,
said unhewn guide surface and said second file surface conjointly enclose a second angle (β′) of less than 90°.

4. The file of claim 1 , wherein:
said file body has a first side disposed opposite to said unhewn guide surface;
said unhewn guide surface has a first edge dimension; and,
said first side has a second edge dimension which differs from said first edge dimension.

5. The file of claim 4 , wherein said second edge dimension is less than said first edge dimension.

6. The file of claim 1 , wherein:
said file body has a first side disposed opposite to said unhewn guide surface; and,
said first side defines a shape which differs in at least one cross section from a profile parallel to said unhewn guide surface.

7. The file as claimed in claim 6 , wherein said first side of said file body has at least one elevation.

8. The file of claim 6 , wherein said first side has at least one recess.

9. The file of claim 1 , wherein said unhewn guide surface is interrupted by at least one recess.

10. The file of claim 1 , wherein:
said file surface is a first file surface;
said file body has a second file surface adjoining said first file surface in the circumferential direction;
said file body has a first longitudinal section which includes said first file surface, said second file surface and said unhewn guide surface;
said first longitudinal section defines a first cross section; and,
said file body has a second longitudinal section defining a second cross section which differs from said first cross section.

11. The file of claim 10 , wherein:
said file body has a free end; and,
said second longitudinal section is arranged between said first longitudinal section and said free end of said file body.

12. The file of claim 10 , wherein the file body has, in said second longitudinal section, a flattened cross section on at least one side compared to said first cross section.

13. The file of claim 12 , wherein the file is realized in a flattened manner on at least one guide surface in said second longitudinal section.

14. The file of claim 10 , wherein the file has, in said second longitudinal section, at least one surface that is inclined with respect to the longitudinal direction.

15. The file of claim 10 , wherein the file body defines a longitudinal slot in said second longitudinal section.

16. The file of claim 1 , wherein said indicator extends over the entirety of said unhewn guide surface along at least 30% of the length ( 1 ) of the first file surface.

17. The file of claim 1 , wherein:
said file body has a first side disposed opposite to said unhewn guide surface; and,
said indicator extends over the entirety of said first side along at least 30% of the length ( 1 ) of the first file surface.

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Lux Thomas
• Hollmeier Friedrich
• Maier Georg
• Stapel Bertil
• Grams Tobias
• Althoff Norbert

Classifications

• B23D63/162 Primary

  by a reciprocating or rotating rod-like sharpening tool, e.g. file, grinding cylinder · CPC title

• B23D71/04

  Hand files or hand rasps (carrying or attaching means for tools which are connected to a carrier at both ends B23D51/12; guiding arrangements B23D69/02) · CPC title