Shredder hammers including improved engagement between the hammer pin and the hammer
First Claim
1. A shredder hammer, comprising:
- a hammer body including a hammer mounting portion and a hammer blade portion, wherein the hammer mounting portion includes a mount opening defined therein that extends from a first major surface of the hammer body to a second major surface of the hammer body, wherein a pin mounting surface is provided within the mount opening for engaging a hammer pin, wherein at least a portion of the pin mounting surface is convex, and wherein at least some of the portion of the pin mounting surface that is convex is continually curved throughout an overall thickness of the hammer body between the first and second major surfaces at the mount opening and is located at least along a half of the hammer pin receiving opening located farthest away from the hammer blade portion.
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Accused Products
Abstract
Shredder hammers include a hammer pin opening in which at least some portion of the interior surface is curved in a direction moving from one major surface of the shredder hammer to the other. This interior surface may be smoothly formed as an arc of a circle, as a parabola, as a hyperbola, or as another curved surface, with the local extrema within the interior of the hole (e.g., at or near the center). Providing the curved interior surface helps vary and disperse the locations where force is absorbed due to contact between the hammer pin and the walls defining the hammer pin opening when the shredding hammer blade contacts the material to be shredded. Other structures include engagement between the hammer pin and the hammer as part of a bushing member, a spool or sleeve member, or a ball swivel member.
32 Citations
24 Claims
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1. A shredder hammer, comprising:
a hammer body including a hammer mounting portion and a hammer blade portion, wherein the hammer mounting portion includes a mount opening defined therein that extends from a first major surface of the hammer body to a second major surface of the hammer body, wherein a pin mounting surface is provided within the mount opening for engaging a hammer pin, wherein at least a portion of the pin mounting surface is convex, and wherein at least some of the portion of the pin mounting surface that is convex is continually curved throughout an overall thickness of the hammer body between the first and second major surfaces at the mount opening and is located at least along a half of the hammer pin receiving opening located farthest away from the hammer blade portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A shredder hammer, comprising:
a hammer body including a hammer mounting portion and a hammer blade portion, wherein the hammer mounting portion includes a mount opening defined therein that extends from a first major surface of the hammer body to a second major surface of the hammer body, wherein a pin mounting surface is provided within the mount opening for engaging a hammer pin, wherein at least a portion of the pin mounting surface is convex, wherein at least some of the portion of the pin mounting surface that is convex is located within a central 90% of an overall thickness of the hammer body between the first and second major surfaces at the mount opening, and wherein the convex portion of the pin mounting surface includes a plurality of flat, non-parallel surfaces, wherein each flat surface within a central 50% of the overall thickness of the hammer body at the mount opening is joined to its adjacent flat surface at an obtuse angle. - View Dependent Claims (22, 24)
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23. A shredder hammer, comprising:
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a hammer body including a hammer mounting portion and a hammer blade portion, wherein the hammer mounting portion includes a mount opening defined therein that extends from a first major surface of the hammer body to a second major surface of the hammer body; and a pin engaging member received in the mount opening, wherein the pin engaging member includes an exterior surface that engages the mount opening, and wherein the pin engaging member defines a hammer pin receiving opening including an interior surface for receiving a pin, wherein the pin engaging member includes a ball swivel, wherein the ball swivel is rotatable within the mount opening of the hammer body.
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Specification