Triple-purpose attachment
AssigneeWausau Machine and Technology, Inc.
InventorAllan J. Albrecht
Life of this patent
Estimating the term…
Abstract
A triple-purpose attachment for articulated back-hoes and the like comprises an earth-working bucket having a clamping/scarifying arm mounted to pivot in an arc about the same axis as the bucket, or about another axis passing through the bucket normal to the longitudinal axis of the dipper stick. The arc is fixed relative to the bucket. The lower end of the arm includes forward and rear teeth, and the arm is pivotably moved by hydraulic motive means to be useful by itself or in combination with the bucket in excavation, ripping, lifting, moving and turning objects.
Claims14
A unitary triple-purpose attachment for an articulated excavation machine, comprising:
- an earthworking bucket having two sides joined by a generally concave pan with a leading excavating edge;
- bucket mounting members fixedly attached to said bucket for pivotably mounting said bucket to said articulated excavation machine for moving and pivoting said bucket;
- a clamping/scarifying arm having a toothed lower end and mounted at its upper end to said bucket or bucket mounting members to pivot in a fixed arc in a vertical plane bisecting said concave bucket pan from top to bottom, said arm pivotable between an upper position away from said bucket and a lower position wherein said toothed lower end is adjacent said leading excavating edge, wherein said toothed lower end comprises a forward facing sharp tooth and a rearward facing sharp tooth;
- and
- hydraulic motive means having one end pivotally attached to said clamping/scarifying arm and having the opposite end thereof pivotably mounted to move said clamping/scarifying arm in said fixed arc.
Dependencies are inferred from the claim text.