Cutting chain for a hand-operated implement and hand-operated implement

A cutting chain for a hand-operated implement for cutting metal and mineral materials, the cutting chain comprising:

• central connecting links;
• lateral connecting links connecting the central connecting links to each other;
• the central connecting links include first central connecting links configured as drive links each having a first drive tooth;
• the central connecting links including second central connecting links, wherein the second central connecting links differ from the first central connecting links in that:
• the second central connecting links each have a second drive tooth, wherein the second drive tooth is shaped differently than the first drive tooth;
• or
• the second central connecting links each have a second drive tooth, wherein the first drive tooth is positioned at a first distance to the second drive tooth leading in a direction of travel of the cutting chain and the second drive tooth is positioned at a second distance relative to the first drive tooth leading in a direction of travel of the cutting chain, wherein the first distance is different from the second distance;
• wherein the first drive tooth has a first width and the second drive tooth has a second width, wherein the second width is no more than approximately 75% of the first width.

A cutting chain for a hand-operated implement for cutting metal and mineral materials, the cutting chain comprising:

• central connecting links;
• lateral connecting links connecting the central connecting links to each other;
• the central connecting links include first central connecting links configured as drive links each having a first drive tooth;
• the central connecting links including second central connecting links, wherein the second central connecting links differ from the first central connecting links in that:
• the second central connecting links each have a second drive tooth, wherein the second drive tooth is shaped differently than the first drive tooth;
• or
• the second central connecting links each have a second drive tooth, wherein the first drive tooth is positioned at a first distance to the second drive tooth leading in a direction of travel of the cutting chain and the second drive tooth is positioned at a second distance relative to the first drive tooth leading in a direction of travel of the cutting chain, wherein the first distance is different from the second distance;
• or
• the second central connecting links have no drive tooth;
• cutting segments fixed to the lateral connecting links and adapted to engage a workpiece;
• wherein at least one of the central connecting links has a projection extending into the area positioned along a length of the cutting chain between two of the cutting segments arranged successively.

A hand-operated implement for cutting metal and mineral materials, the implement comprising:

• a drive motor;
• a drive sprocket connected to the drive motor and driven by the drive motor;
• a guide bar having a nose sprocket mounted on a nose of the guide bar;
• a cutting chain disposed on the guide bar and driven by the drive motor via the drive sprocket around the circumference of the guide bar;
• the cutting chain being guided round a part of the circumference of the nose sprocket;
• the cutting chain having central connecting links and lateral connecting links connecting the central connecting links to each other;
• the central connecting links including first central connecting links configured as drive links each having a drive tooth;
• the first central connecting links being positioned adjacent to a first area of the circumference of the nose sprocket as the first central connecting links run around the nose sprocket;
• the first area having a first recess in which the drive tooth engages as the first central connecting links run round the nose sprocket;
• the central connecting links including second central connecting links positioned adjacent to a second area of the circumference of the nose sprocket as the second central connecting links run around the nose sprocket;
• the second area having a blocking contour which prevents the drive tooth from engaging fully in the second area.

A hand-operated implement for cutting metal and mineral materials, the implement comprising:

• a drive motor;
• a drive sprocket connected to the drive motor and driven by the drive motor;
• a guide bar;
• a cutting chain disposed on the guide bar and driven by the drive motor via the drive sprocket around the circumference of the guide bar;
• the cutting chain being guided round a part of the circumference of the drive sprocket;
• the cutting chain comprising central connecting links and lateral connecting links that connect the central connecting links to one another;
• the central connecting links including first central connecting links configured as drive links each having a drive tooth;
• the first central connecting links each positioned adjacent to a first area of the circumference of the drive sprocket as the first connecting links run around the drive sprocket;
• the first area having a first recess in which the drive tooth engages as the first central connecting links run round the drive sprocket;
• the central connecting links including second central connecting links positioned adjacent to a second area of the circumference of the drive sprocket as the second central connecting links run around the drive sprocket;
• the second area having a blocking contour preventing the drive tooth from engaging fully in the second area.