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CHAIN BAR APPARATUS AND METHODS AND TOOL COMBINATIONS AND METHODS OF MAKING AND USING MOVING TOOL COMBINATIONS

IP.com Disclosure Number: IPCOM000197781D
Publication Date: 2010-Jul-22

Publishing Venue

The IP.com Prior Art Database

Abstract

This relates to chain bars and other support structures for chain cutting instruments and also supports for conveyors or moving tools, for example chain bars for cutting chains. Chain bar apparatus and methods are disclosed that may be formed from plastic, metal or other materials. Laser cutting of a chain bar core can provide improved structural characteristics, for example when adhesive is used to assemble the chain bar. Flow diversion elements can be used to optimize flow throughout the chain bar.

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Page 1 of 53

Ref: 57701-019WO

         CHAIN BAR APPARATUS AND METHODS AND
TOOL COMBINATIONS AND METHODS OF MAKING AND USING MOVING TOOL COMBINATIONS

BACKGROUND

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Field

    These inventions relate to chain bars and other support structures for chain cutting instruments and also supports for conveyors or moving tools, for example chain bars for cutting chains.

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SUMMARY

    Methods and apparatus are disclosed that can be used for chain bars or other support structures (sometimes hereafter referred to as "chain bars") for chain cutting instruments. One or more aspects of the methods and

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apparatus can be used to improve the manufacture of such structures, as well as to improve the structures themselves. In at least one aspect, the manufacturing cost for a chain bar can be reduced. In at least one aspect, the manufacturing of a chain bar is simplified.

In one example described herein, a chain bar is formed as a laminate

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of at least two structures, namely an outer plate and a core. The core is configured to extend substantially in the same manner as the outer plate, so that for example the outer plate is formed to be substantially planar, and a substantial portion of the core is also formed to be substantially planar. The core is also formed to include at least one passageway extending through the

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thickness of the core, such as from one side of the core adjacent the outer plate to the other side of the core opposite the outer plate. In one example, the at least one passageway is formed as a closed circuit not extending to any outer perimeter of the core. An example of a closed circuit includes a nonlinear opening, for example but not by way of limitation an opening having

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opposing walls spaced apart from each other substantially a constant distance. Another example is a non-circular opening extending in a given direction without intersecting a perimeter portion of the core. A further example includes an opening that is asymmetric, and one example of an

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Ref: 57701-019WO

asymmetric opening includes a serpentine opening. Other configurations of openings may also be used, in addition to or as a substitute for the openings described. In one example, at least one opening is formed in a core of a chain bar and the chain bar is assembled with adhesive extending into the at least one opening. In a further example, adhesive used in constructing a

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chain bar extends entirely through an opening in the chain bar from one side of the chain bar to another side of the chain bar.

    In another example of a laminated chain bar having at least an outer plate and a core, at least one opening extending completely through the core is a laser cut opening. In a method of forming a core for a chain bar, the

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chain bar includes a core having an opening formed through a laser cutting operation. In one example, the opening is formed so as to be completely internal to a perimeter of the core. In another example, an opening is formed through the core by laser cuttin...