Replaceable wear member

Details Replaceable wear member Replaceable wear member

1998-12-16

2001-02-27

Jones, Deborah (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Having aperture or cut

C428S600000, C037S455000, C296S039200, C296S041000, C172S772000

Reexamination Certificate

active

06194080

ABSTRACT:

TECHNICAL FIELD
This invention relates generally to a wear protection systems for protecting parent members of earthworking machines from abrasive wear and, more particularly, to a replaceable wear member having a skeletal body for weight reduction purposes.
BACKGROUND ART
Replaceable wear members for protecting structural members such as the bowl of a bucket or the bed of truck body are well known in the art. These replaceable wear members come in many different shapes and forms and employ a variety of different attachment methods for securing them to the structural or parent members they protect. For instance, some wear members may be simple strips or plates of steel, which are welded to the structural member. Bolts are also commonly used to secure such wear members. More recently, separate “wear tiles” have been employed, such as the one depicted in U.S. Pat. No. 5,564,508, entitled Replaceable Wear Runner issued Oct. 15, 1996 to William J. Renski and assigned to the assignee hereof.
Prior wear members may be 50 to over 100 mm thick and, because they are steel, are quite heavy and add a significant amount of weight to the truck body or bucket. As a result, the carrying capacity of the truck body or bucket if effectively reduced. Also, the truck bodies of off-highway trucks, for instance, are loaded by large loaders or shovels capable of picking up and then dropping boulder size rocks into the truck body. As such large rocks are dropped from great heights, large impact loads are exerted on the truck bed, creating dents and unevenness in the bed. As a result, the corners or other portions of the wear members become spaced from and unsupported by the bed. When impacted by subsequent rocks, these wear members may themselves break or have securing method fail, resulting in the loss of the wear member.
Accordingly, it would be highly advantageous to employ a wear member that adds less weight to the truck body or bucket, while maintaining its ability to protect the structural members thereof or overcoming one or more of the problems as set forth above.
DISCLOSURE OF THE INVENTION
In one aspect of the invention, a replaceable wear member is provided that includes a skeletal body portion having a continuous peripheral frame extending about a large window-like opening through the body portion.
In another aspect of the invention, a wear protection system is provided for protecting a parent member of an earthmoving machine. The wear protection system includes a mounting base carried on the parent member and a replaceable wear member. The wear member has a skeletal body portion having a continuous peripheral frame extending about a large window-like opening through the body portion. Cooperating place and slide engagement elements are included on each of the mounting base and the wear member, which are adapted to permit place and slide mounting of the wear member onto the mounting base to a mounted position. The wear protection system also includes a retainer adapted to retain the wear member in its mounted position.


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patent: WO 98/44208 (1998-10-01), None
patent: WO 99/23315 (1999-05-01), None

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