Patent ID: 7628222

Claim:
A breaker mounting bracket for mounting a breaker body on a distal end of an arm of a working machine wherein the breaker body includes: opposing side surfaces each having an engagement groove with opposing engagement groove side surfaces and an engagement groove recessed surface therebetween, a breaker body end surface supported proximate said distal end of said arm; and an operational axis of breaking action of the breaker body defining a longitudinal direction, the breaker mounting bracket comprising: a housing having first and second housing sides opposing each other and between which said breaker body is accepted, and a housing end configured to attach to said distal end of said arm; first and second engaging members each having an L-shaped configuration including: a first plate portion having an engaging portion configured to fit in said engagement groove, the engaging portion having a first engaging member surface configured to contact the engagement groove recessed surface; a second plate portion extending orthogonally from said first plate portion in a direction away from said operational axis and presenting a second engaging member surface oriented orthogonal to said operational axis; and said first plate portion having a third engaging member surface on a side opposite said first engaging member surface; an end resilient body disposed in said housing so as to oppose said breaker body end surface to absorb vibrations of said breaker body in the longitudinal direction; first side resilient bodies respectively disposed engaging said first and second housing sides and supporting said second engaging member surfaces of said first and second engaging members so as to absorb vibrations of said breaker body in the longitudinal direction in cooperation with said end resilient body; second side resilient bodies respectively disposed engaging said first and second housing sides and supporting said third engaging member surfaces of said first and second engaging members in a lateral direction orthogonal to the longitudinal direction so as to absorb vibrations of said breaker body in the lateral direction; and said first and second side resilient bodies being detachably engaged with said second and third engaging member surfaces and disposed such that said second plate portions of said first and second engaging members are interposed in the longitudinal direction between respective ones of said first and second resilient bodies.