Cutting head for a string trimmer

  • US 10,034,422 B2
  • Filed: 06/14/2016
  • Issued: 07/31/2018
  • Est. Priority Date: 06/14/2016
  • Status: Active Grant
First Claim
Patent Images

1. A method of releasing cutting line from a string trimmer comprising the steps:

  • providing a string trimmer having a working head including a spool assembly and a motor operatively connected to the spool assembly to rotate the spool assembly, the spool assembly having a spool housing and a spool cap that are coupled together to define an interior space, a spool having cutting line thereon and a lever housed in said interior space;

    wherein the lever slides transversely between a retracted and an extended position, and in both positions, locking the spool to prevent rotation;

    wherein when the motor is not energized, a spring biases the lever in one of the retracted or the extended position;

    energizing the motor to rotate the spool assembly and move the lever into the other of the retracted or extended position, the lever having a peg that engages a slot in one of the spool cap or spool housing to lock the lever in the retracted or extended position, wherein the transition of the lever between the lever'"'"'s retracted and extended positions unlocks the spool allowing the spool to rotate and feed out cutting line.

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