US 7,603,781 B1Granted

Foliage trimmer with adjustable curvature of the flexible cutting blade assembly

OwnerAnthony A. Szoke, Jr.inventor

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Abstract

Foliage trimmer with adjustable curvature of the flexible cutting blade assembly for the purpose of cutting convex shapes comprising of a trimmer body with pivotally mounted handle mechanism attached to a flexible curvature adjuster band with a uniform curvature maintainer mechanism attached to trimmer body to maintain equidistant spacing between the bolt axis and to prevent the formation of a ununiform curvature. The curvature of the flexible cutting blade assembly is adjusted with the release of the restraining mechanism with the fingers of the hand that also adjusts the pivotal movement of the front handle mechanism. The flexible cutting blades of the flexible cutting blade assembly are linearly reciprocated via resilient flexible cams of the drive mechanism connected to the motor means located in trimmer body.

Claims4

Dependent claims

A foliage trimmer comprising:

a trimmer body made of two clamshells with a rear handle integrally formed onto the trimmer body;
a motor means;
a drive mechanism means;
a handle mechanism means pivotally mounted to said trimmer body;
a restraining mechanism means;
a flexible cutting blade assembly with an adjustable curvature further comprising a flexible mounting plate, a flexible upper cutting blade, a flexible lower cutting blade, a flexible band having longitudinally extending openings, a flexible debris cover means, a curvature maintainer mechanism means consisting of a plurality of rotating connectors and linear links, a plurality of bolts including an outermost bolt situated farthest from said body, a plurality of spacers, and a plurality of nuts;
said flexible band is clamped to said handle mechanism means, projects through said trimmer body, and secured to said outermost bolt;
said flexible mounting plate has a plurality of openings and is attached to said trimmer body;
said flexible upper cutting blade and said flexible lower cutting blade each have a plurality of longitudinally extending openings and a plurality of cutting teeth with cutting edges thereon;
said flexible upper cutting blade and said flexible lower cutting blade are linearly counter reciprocated by said drive mechanism means which is operatively connected to said motor means;
said drive mechanism comprises a rotatable camshaft and two sets of two opposing resilient flexible cams, wherein the two sets of two opposing resilient flexible cams are positioned on a rotatable camshaft;
said flexible cutting blade assembly's curvature is adjustable by movement of said flexible band and said handle mechanism means;
said flexible cutting blade assembly's curvature is secured by said restraining mechanism means;
said flexible cutting blade assembly is connected to said trimmer body by said curvature maintainer mechanism means;
said flexible cutting blade assembly is fastened together by said plurality of bolts, said plurality of spacers, and said plurality of nuts;
and
said flexible debris cover means also serves as a support for said flexible upper cutting blade.

14 more elements

A foliage trimmer comprising:

a trimmer body made of two clamshells with a rear handle integrally formed onto the trimmer body;
a motor means;
a drive mechanism means;
a handle mechanism means pivotally mounted to said trimmer body;
a restraining mechanism means;
a flexible cutting blade assembly with an adjustable curvature further comprising a flexible mounting plate, a flexible cutting blade, a flexible band having longitudinally extending openings, a flexible debris cover means, a curvature maintainer mechanism means consisting of a plurality of rotating connectors and linear links, a plurality of bolts including an outermost bolt situated farthest from said body, a plurality of spacers, and a plurality of nuts;
said flexible band is clamped to said handle mechanism means, projects through said trimmer body, and secured to said outermost bolt;
said flexible mounting plate is attached to said trimmer body and comprises a plurality of longitudinally extending openings and a plurality of cutting teeth with cutting edges such that the flexible mounting plate acts as a stationary cutting blade;
said flexible cutting blade further comprises a plurality of longitudinally extending openings and a plurality of cutting teeth with cutting edges thereon;
said flexible cutting blade is linearly counter reciprocated by said drive mechanism means which is operatively connected to said motor means;
said drive mechanism comprises a rotatable camshaft and two sets of two opposing resilient flexible cams, wherein the two sets of two opposing resilient flexible cams are positioned on a rotatable camshaft;
said flexible cutting blade assembly's curvature is adjustable by movement of said flexible band and said handle mechanism means;
said flexible cutting blade assembly's curvature is secured by said restraining mechanism means;
said flexible cutting blade assembly is connected to said trimmer body by said curvature maintainer mechanism means;
said flexible cutting blade assembly is fastened together by said plurality of bolts, said plurality of spacers, and said plurality of nuts;
and
said flexible debris cover means also serves as a support for said flexible cutting blade.

14 more elements

Dependencies are inferred from the claim text.