Drive link for a sawchain, and an arrangement of a plurality of drive links for a sawchain

Patent metadata

Field	Value
Publication number	US-12370715-B2
Application number	US-202217898083-A
Country	US
Kind code	B2
Filing date	Aug 29, 2022
Priority date	Aug 27, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A drive link for a sawchain is disclosed wherein the drive link has a top side which faces away from an opening plane defined by the respective axes of the rivet openings and extends at least partially at the drive link apex. A functional surface and a contact surface spaced apart from the functional surface are provided on the top side of the drive link. The functional surface is formed on the drive link apex and includes a section of the top side in which the top side is at a maximum spacing from the opening plane. The functional surface of the top side of the drive link is point-symmetric to a symmetry point with respect to the contact surface in the viewing direction toward the drive link plane.

First claim

What is claimed is:

1. A drive link for a sawchain, the drive link comprising:
a drive link body defining two openings for joint elements and having a drive link apex and a drive appendage defining a bottom side configured to engage in a groove of a guide bar;
said drive link body being planar and extending in a drive link plane;
said two openings each defining a center axis;
said drive link body defining an opening plane containing said center axes of said two openings and extending perpendicularly to said drive link plane;
said drive link body defining a transverse plane extending perpendicular to said opening plane and centrally between said center axes of said two openings;
said drive link body defining a longitudinal axis extending in said drive link plane and intersecting said center axes of said two openings;
said drive link apex being asymmetrical with respect to said transverse plane;
said drive link body having a top side facing away from said bottom side and said opening plane and extending at least partially at said drive link apex;
said drive link body having a functional surface and a contact surface spaced apart from said functional surface at said top side by a linear connecting surface;
said functional surface and said contact surface defining respective first and second planes parallel to each other;
said functional surface being formed on said drive link apex and including a section of said top side in which said top side has a maximum spacing from said opening plane; and,
said functional surface, with respect to said contact surface in a viewing direction toward said drive link plane, being configured point-symmetric to a symmetry point lying between said first and second planes and in spaced relationship to said functional surface and said contact surface.

2. The drive link of claim 1 , wherein the top side of the drive link has a first middle section and a second middle section; and, said first middle section extends from said functional surface to said symmetry point and said second middle section extends from said symmetry point to said contact surface.

Assignees

• Stihl Ag & Co Kg Andreas

Inventors

• Grams Tobias
• Maerz Juergen
• Kienzle Wolfgang
• Wittig Maureen
• Freitag Marius
• Kewes Marco

Classifications

• B27B33/14 Primary

  Saw chains {(saw chains for slotting or mortising devices B27F5/08)} · CPC title

• B27B33/141 Primary

  with means to control the depth of cut · CPC title

• B23D65/00

  Making tools for sawing machines or sawing devices for use in cutting any kind of material · CPC title