Patent ID: 11925139
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 9:
10. The device for cutting grass of claim 5, further comprising:
a blade within a blade guard;
a driver and an orbital around the cutting head shaft;
the ascender starting at a first position, disengaged from rotation of the cutting head shaft; with rotation of the ascender caused by a clutch between a transmission gear and the ascender, rotation of the cutting head shaft causing the ascender, orbital, and driver to move up the internal threads;
the ascender moving to a second position, where it interfaces with the cutting head shaft, continued rotation causing continued climbing of the ascender; and
the ascender moving to a third position, where the ascender is again disengaged from the cutting head shaft, but the driver is engaged and rotating, rotation of the driver causing linear motion of the blade with respect to the blade guard;

whereby movement of the ascender with respect to the internal threads allows the cutting head to have an active and extended position and a retracted and waiting position.