Cutting head for string trimmer
AssigneeKwik Products, Inc.
InventorFernando Iacona
Life of this patent
Estimating the term…
Abstract
A cutting head for a string trimmer is provided which accommodates any string gauge thickness and may be easily and quickly re-threaded upon failure of a string previously disposed therein. The cutting head has spring-biased clamping members which are each mounted within a rotatable clamp housing within the head, such that, as a string encounters a solid object, the clamping member and its associated housing are rotated about a generally vertical axis so as to obviate or minimize the development of a stress concentration in the string in the vicinity at which it is engaged by the clamp housing.
Claims10
A combination of a cutting head and string for cutting and trimming vegetation, said combination being selectively rotationally driven through a drive shaft, said combination comprising:
- at least one generally straight length of string, each said string having two ends and an intermediate portion extending therebetween;
- a cutting head selectively rotationally driven by the drive shaft, said cutting head having generally planar, upper and lower covers which are spaced from one another, at least one clamp housing disposed between the spaced upper and lower covers and being rotatable about an axis extending generally perpendicular to the planar covers;
- each rotatable clamp housing having a through passageway for receiving one end of said string;
- a spring-biased clamping member disposed in said rotatable clamp housing for selectively fixing each said string to said head.
Dependencies are inferred from the claim text.