Patent ID: 9686910
Date: 2017-06-27
CPC Classifications: A01D

Claim:
1. A trimmer head comprises: a stem attachment point; a lift; a base; a pull and twist member; a plurality of blade posts; a plurality of resting cavities; the lift and the base being positioned adjacent to each other; the lift being retractably and rotatably connected to the base by the pull and twist member; the plurality of blade posts being peripherally distributed about the lift; the plurality of blade posts being oriented towards the base; each of the plurality of blade posts being connected normal to the lift; each of the plurality of resting cavities traversing into the base; the plurality of resting cavities being perimetrically distributed about the base; each of the plurality of blade posts being selectively engaged to a corresponding cavity from the plurality of resting cavities; the stem attachment point being positioned in between the lift and the base; a continuous hollow path traversing through the lift towards the base and intersecting with the stem attachment point; a trimmer interface; the trimmer interface comprises a stem sleeve and a cap; the cap being mounted onto the lift, opposite to the base; the stem sleeve concentrically traversing into an inner tube of the pull and twist member; a first end of the stem sleeve being laterally connected to the cap; the stem attachment point being internally connected to a second end of the stem sleeve; the pull and twist member comprises the inner tube, an outer tube, an annular rim, an annular stopper, and a spring; the inner tube being centrally connected onto the base; the outer tube being centrally integrated through the lift; the annular rim being perimetrically connected within the outer tube; the inner tube being slidably engaged through the annular rim; the annular stopper being laterally connected to the inner tube, offset from the annular rim; the spring being located within the outer tube and around the inner tube; the spring being pressed against the annular rim by the annular stopper; the stem sleeve, the outer tube, the annular rim, and the inner tube are concentrically positioned with each other in order to form the continuous hollow path, wherein the continuous hollow path is used to receive a trimmer stem; a top surface of the base and a bottom surface of the lift are offset from each other; the base comprises a bottom and an opening formed on the bottom; and the stem attachment point being internally connected to the second end of the stem sleeve via the opening of the base.