POSITIVE DISPLACEMENT SORTER
First Claim
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1. A positive displacement sorter apparatus, comprising:
- a plurality of interconnected slats defining an endless web, an upper run of said web defining a conveying surface;
pusher shoes moving along at least some of said plurality of slats to laterally displace an article on said conveying surface, said pusher shoes having slat engagement portions engaging the slats at shoe engaging portions of the slats;
each of said pusher shoes having a body generally surrounding at least one of said slats, said body substantially made of a first polymeric material, wherein said slat engaging portions substantially made of a second polymeric material that is different from said first polymeric material.
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Abstract
A positive displacement sorter apparatus includes a plurality of interconnected slats defining an endless web. An upper run of the web defines a conveying surface. Pusher shoes move along at least some of the slats to laterally displace an article on the conveying surface. The pusher shoes have slat engagement portions engaging the slats at shoe-engaging portions of the slats. Each of the pusher shoes has a body generally surrounding at least one of the slats. The body is substantially made of a first polymeric material. The slat engaging portions are substantially made of a second polymeric material that is different from the first polymeric material.
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Citations
34 Claims
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1. A positive displacement sorter apparatus, comprising:
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a plurality of interconnected slats defining an endless web, an upper run of said web defining a conveying surface;
pusher shoes moving along at least some of said plurality of slats to laterally displace an article on said conveying surface, said pusher shoes having slat engagement portions engaging the slats at shoe engaging portions of the slats;
each of said pusher shoes having a body generally surrounding at least one of said slats, said body substantially made of a first polymeric material, wherein said slat engaging portions substantially made of a second polymeric material that is different from said first polymeric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A positive displacement sorter apparatus, comprising:
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a plurality of interconnected slats defining an endless web, an upper run of said web defining a conveying surface;
pusher shoes moving along at least some of said plurality of slats to laterally displace an article on said conveying surface, said pusher shoes having slat engagement portions engaging the slats at shoe engaging portions of the slats;
each of said pusher shoes having a body generally surrounding at least one of said slats, said body substantially made of a first polymeric material, wherein said slat engaging portions substantially made of a second polymeric material that is different from said first polymeric material, said second polymeric material being self-lubricating. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A positive displacement sorter apparatus, comprising:
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a plurality of interconnected slats defining an endless web, an upper run of said web defining a conveying surface;
pusher shoes moving along at least some of said plurality of slats to laterally displace an article on said conveying surface, said pusher shoes having slat engagement portions engaging the slats at shoe engaging portions of the slats;
each of said pusher shoes having a body generally surrounding at least one of said slats, said body substantially made of a first polymeric material, projections extend inwardly from said body and strips supported by said projections, said strips substantially made of a second polymeric material that is different from said first polymeric material, said strips defining said slat engagement portions, said second polymeric material being self-lubricating. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A positive displacement sorter pusher shoe for moving along at least one slat of a positive displacement sorter to laterally displace an article positioned on said at least one slat, said pusher shoe comprising:
a generally cylindrical body substantially made of a first polymeric material, projections extending inwardly from said body and strips supported by said projections, said strips substantially made of a second polymeric material that is different from said first polymeric material, said second polymeric material being self-lubricating. - View Dependent Claims (31, 32, 33, 34)
Specification