Patent ID: 8713803

Claim:
A blade assembly of a hedge trimmer, the blade assembly defining a blade axis and comprising: at least one cutting blade having a base body and extending along said blade axis and having a plurality of cutting teeth; a first portion of said cutting teeth extending along respective first tooth axes starting from said base body and lying transversely to said blade axis and a second portion of said cutting teeth extending along respective second tooth axes lying transversely to said blade axis; said first portion of cutting teeth being configured as protective teeth and each protective tooth of said protective teeth having an inner cutting region extending from said blade axis; said inner cutting region defining a cutting edge having an outer end; said inner cutting region extending from said base body outwardly up to said outer end of said cutting edge whereat said inner cutting region ends; said protective tooth having a protective finger extending from said inner cutting region; said protective tooth being unsymmetrical in said cutting region with respect to the first tooth axis corresponding thereto and having a cutting side and a holding side lying opposite to said cutting side; said protective tooth having the cutting edge on said cutting side in said cutting region and having a blunt holding edge on the opposite-lying holding side in said cutting region; said protective finger having a forward edge on said cutting side and a rearward edge on said holding side; said cutting edge having a cutting angle (δ) in said cutting region lying in a range of 25° to 45′ (25′≦δ≦45°); said holding edge having an edge angle (ε) in said cutting region lying in a range of 80° to 100° (80°≦ε≦100°); and, said forward edge of said protective finger extending from said outer end of said cutting edge and being rearwardly inclined at a first angle (α) of inclination with respect to said first tooth axis and said rearward edge of said protective finger extending rearwardly from said holding edge at a second angle (β) of inclination with respect to said first tooth axis.