Patent ID: 7617619
Filing Date: 2009-11-17
Classification: E02F

Abstract:
1. An attachment for an engineering vehicle having a stick and an engineering vehicle hydraulic system, the attachment comprising: a bucket having a cavity, a lower front edge, a top wall, a bottom wall, a mouth, a top front edge, side edges, and a curved portion, the bucket having teeth at the lower front edge thereof, the teeth having interteeth spaces, the bucket including a pair of spaced apart thumb support members and a pair of thumb retainer pins engaged therewith, the bucket having a pair of spaced apart hydraulic cylinder engaging members located spaced away from the thumb support members on the bucket external walls and toward the curved portion of the bucket, the hydraulic cylinder engaging members including a pair of hydraulic cylinder retainer pins, the bucket including a stick engaging member mounted thereupon, the stick engaging member located inboard of the thumb support members and hydraulic cylinder engaging members; a pair of hydraulic cylinders, each hydraulic cylinder having a first end and a second end; a thumb for pivotal engagement with the bucket and moving between a closed and an open position, the thumb having a multiplicity of tines, the tines trending typically transversely at least partially across the mouth of the bucket, the tines having tine tips at removed ends thereof, the multiplicity of tines including a pair of outboard tines, each tine of the outboard pair with a near end adapted to engage one of the thumb support members of the bucket, and further adapted to engage the first end of one of the hydraulic cylinders, the thumb including at least one spacing member, the tines laterally spaced apart from one another by the at least one spacing member; further including a hydraulic subsystem for fluidly engaging the hydraulic cylinders to the hydraulic system of the engineering vehicle.