Stanley Black Decker, Inc.

Epiroc Industrial Tools and Attachments LLC

Black Decker Inc.

Shane Bubacz

Clayton Sederberg

Karl Johnson

Matthew George Mecklin

Jaret L Wilkins

Robert Laine Blettner

An indexable piercing tip mounts to a nose portion of one of the jaws of a heavy-duty demolition shears so as to enclose and protect top, bottom, front, and two opposing side surfaces of the nose portion during use of the shears. The piercing tip has a first operative position in which a first set of piercing and shearing edges of the piercing tip are presented for use. When the first set gets dull or worn, the piercing tip can be rotated/indexed 180° degrees so as to present a second set of piercing and shearing edges of the piercing tip for use.

Indexable piercing tip for demolition shears

Heavy-duty material processors (e.g., shears, concrete crushers) include a jaw that pivotally connects to another jaw. A hydraulic cylinder extends between the jaws to open and close the jaws in a shearing motion. Cutting/shearing/crushing blade inserts mount to detachable blade holders, which in turn mount to one of the jaws. Wedge blocks securely and detachably attach the blade inserts to the remainder of their associated jaw, and rely on force-amplifying wedge surfaces to ensure a secure attachment. The detachable blade holders may include lateral flanges that extend across an otherwise exposed face of their respective underlying jaw bodies to protect the jaw bodies during use. A blade on one of the jaws is laterally adjustable, which helps to free a jam if one of the jaws gets jammed into the space between blades in the other jaw.

Heavy duty material processor

This invention relates to a demolitions shears, including a body having a fixed jaw and a movable jaw that pivots with respect to the fixed jaw. A main shaft for pivotally mounting the moveable jaw to the body. A hydraulic cylinder for actuating the movable jaw to pivot. The movable jaw includes a first rotation stop and the main shaft including a second rotation stop. When the main shaft is installed in the moveable jaw, the first rotation stop and the second rotation stop are coupled to prevent relative rotation between the main shaft and the movable jaw, without axially fixing the main shaft to the movable jaw. A removable stop assembly is constructed and arranged to limit axial movement between the main shaft and the movable jaw.

Serviceable pivot for shears

Growing community of inventors

Duluth, MN, United States of America

Shane Bubacz