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US 5,020,224 AGranted
Semi-automatic string trimmer head
AssigneeWhite Consolidated Industries, Inc.
InventorEugene J. Haupt
Life of this patent
Estimating the term…
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AssigneeWhite Consolidated Industries, Inc.
InventorEugene J. Haupt
Estimating the term…
A string trimmer providing an incremental indexing of line when the head is stopped and started. The preferred embodiment of the string trimmer head includes a spool member within the body member, the spool member being coaxially positioned within the body member and being rotatable therewith. The spool member includes a grooved end face with a cam channel having at least one switchback and one arcuate segment. A connecting means attached to the body member includes a connector which runs within the cam channel. Upon starting the rotation, the connector runs along an arcuate segment of the cam channel (permitting relative rotation between the spool member and the body member thereby indexing a length of line) until contacting a switchback stopping point. The connector is biased to move along the switchback and resets along the switchback upon stopping of rotation.
A feed head for a string trimmer or the like, said feed head being rotationally drivable at a high speed about a center axis thereof and comprising:
A feed head for a string trimmer or the like comprising:
For use in conjunction with a string trimmer feed head or the like rotatable at high speed about a center axis thereof to whirl, in a cutting plane transverse to said center axis, an outwardly projecting free end portion of a quantity of flexible cutting line stored within the feed head, a method of periodically lengthening the free line end to compensate for shortening thereof during operation of the feed head, said method comprising the steps of:
Dependencies are inferred from the claim text.