초록 ▼

A chainsaw guidebar comprises an elongate guidebar body replaceably secured to a nose part. The guidebar body is provided with a central extension, the shape of which matches a corresponding forwardly tapering recess in the nose part. Portions of the nose part longitudinally overlap portions of the

A chainsaw guidebar comprises an elongate guidebar body replaceably secured to a nose part. The guidebar body is provided with a central extension, the shape of which matches a corresponding forwardly tapering recess in the nose part. Portions of the nose part longitudinally overlap portions of the guidebar body.

대표청구항 ▼

A chainsaw guidebar comprising a body and a nose part replaceably connected together to define a front-to-rear extending longitudinal axis, a forward end of said body being defined by a forwardly facing connecting edge of said body, a rearward end of said nose part being defined by a rearwardly faci

A chainsaw guidebar comprising a body and a nose part replaceably connected together to define a front-to-rear extending longitudinal axis, a forward end of said body being defined by a forwardly facing connecting edge of said body, a rearward end of said nose part being defined by a rearwardly facing connecting edge which mates with said forwardly facing connecting edge, said body including two longitudinally extending outer edges spaced from one another in a lateral direction relative to said axis, forward ends of said outer edges being interconnected by said forwardly facing connecting edge, said nose part including two longitudinally extending outer edges spaced from one another in a lateral direction relative to said axis, rear ends of said outer edges of said nose part being interconnected by said rearwardly facing connecting edge, said outer edges of said body being aligned with respective outer edges of said nose part when said nose part is connected to said body so as to define first and second outer peripheral edges of said guidebar which are adapted to guide a movable sawchain, said rearwardly facing connecting edge including a front-to-rear extending recess which opens rearwardly toward said body, said forwardly facing connecting edge including a front-to-rear extending tongue received in said recess to define therewith a tongue-and-recess connection, said recess being defined by forwardly convergent linear first surface portions and said tongue including forwardly convergent linear second surface portions which engage said first surface portions, each of said first and second surface portions forming an acute angle with said axis in the range of 10 to 40 degrees, said forwardly facing connecting edge being in longitudinally overlapping relationship relative to said rearwardly facing connecting edge at two locations disposed on opposite lateral sides of said axis and separated by said tongue-and-recess connection, said rearwardly facing connecting edge including first and second sections situated at respective ones of said locations, each of said first and second sections including first and second edge portions spaced apart in a direction perpendicular to a plane of said guidebar, one of said first and second edge portions of each said section being inclined forwardly and laterally outwardly, and the other of said first and second edge portions of each said section being inclined rearwardly and laterally outwardly, said rearwardly and laterally outwardly inclined edge portion of each of said first and second sections being coplanar with said forwardly and laterally outwardly inclined edge portion of the other of said first and second sections, said forwardly facing connecting edge including laterally spaced third and fourth sections mating with said first and second sections, respectively, each of said third and fourth sections including third and fourth edge portions engaging said first and second edge portions, respectively, of an associated one of said first and second sections.