Cutlery – Cutting tools – With blade moving means
Patent
1988-12-20
1990-02-06
Watts, Douglas D.
Cutlery
Cutting tools
With blade moving means
2989807, 30347, 384292, B26B 700
Patent
active
048979236
ABSTRACT:
A flexible line trimmer is provided with an automatic line feeding cutting head portion which utilizes a generally U-shaped, centrifugally actuated balancing arm member to maintain the free end cutting length of the line at a predetermined length during trimmer operation. The balancing arm is rotatably mounted within the head by means of a coil spring element which is installed on one of the leg portions of the balancing arm and press-fitted into a plastic pocket portion of the head to serve as a bearing for the balancing arm. The outer end of the spring-carrying leg has a transverse pigtail portion which may be selectively sized to predeterminably vary the controlled cutting length of the line. The opposite leg of the balancing arm, which is engaged by the line during trimmer operation, is received within spool flange notches when the arm is in its line locking position to prevent undesirable bending of the arm due to cutting line forces thereon.
REFERENCES:
patent: 425569 (1890-04-01), Gare
patent: 1454682 (1923-05-01), Layne
patent: 4236312 (1980-12-01), Foster et al.
patent: 4366622 (1983-01-01), Lombard
patent: 4607431 (1986-08-01), Gay
Watts Douglas D.
White Consolidated Industries, Inc.
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