Line feed configuration for line trimmers

Details Line feed configuration for line trimmers Line feed configuration for line trimmers

1996-09-25

1998-09-15

Watts, Douglas D.

Cutlery

Cutting tools

With blade moving means

30347, H01G 306

Patent

active

058061924

ABSTRACT:
A line trimmer head is provided including a rotatable drive shaft and a housing mounted to the drive shaft for rotation therewith. The housing has an open end and at least one peripheral aperture formed through the housing. A spool subassembly is positioned at least partially within the housing adjacent the open end of the housing. The subassembly includes a spool having at least one flange extending radially outwardly from the periphery thereof, a cog ring secured to the spool, and a ratchet and pawl assembly formed between the cog ring and spool. The ratchet and pawl assembly allows rotation of the spool in a first direction with respect to the cog ring for winding line around the spool while preventing spool rotation in a second direction opposite the first direction to facilitate line feed bumping and line trimming operations. In an alternative embodiment, the pawl is integrally molded with the spool to eliminate the separate spring-pawl assembly.

REFERENCES:
patent: 4035912 (1977-07-01), Ballas et al.
patent: 4052789 (1977-10-01), Ballas, Sr.
patent: 4067108 (1978-01-01), Ballas
patent: 4151646 (1979-05-01), Lane
patent: 4177561 (1979-12-01), Ballas
patent: 4271595 (1981-06-01), Rahe
patent: 4335510 (1982-06-01), Close et al.
patent: 4475287 (1984-10-01), Beihoffer
patent: 4483069 (1984-11-01), Moore
patent: 4805306 (1989-02-01), Baba
patent: 4852258 (1989-08-01), Foster
patent: 5293692 (1994-03-01), Sugihara et al.
patent: 5295306 (1994-03-01), Sugihara et al.

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