Donald J Jaeger

US Patent:

6325459, Dec 4, 2001

Filed:

Dec 16, 1999

Appl. No.:

9/464752

Inventors:

Donald J. Jaeger - Dubuque IA
Kenneth W. Jaeger - Dubuque IA

International Classification:

E01C 2312

US Classification:

299 373

Abstract:

An improved concrete breaker head for attachment to skid loaders via releasable latches having a counterbalanced hammer member, an impact support member and an attachment face-plate for attaching a skid loader and for subsequent articulation. The counterbalance hammer member has a tubular support housing with a first and a second end. A counter-weighting metal element is used for stabilizing and balancing the moment of inertia of the hammer about a pivoting axis of rotation. An impact head portion is disposed on the first end of the tubular housing, and includes the attachment of a tubular support arm structure integrally disposed near the second end of the housing in orthogonal arrangement with the housing. This particular configuration serves to uniformly distribute occurrences of localized impact stresses therethrough which extends the life or cyclical use of the hammer over time. The tubular supporting arm structure is pivotally and integrally attached to the face-plate and the impact support member which allows for raising and lowering the hammer member via free-fall or the force of gravity.