Low profile over-under conveyor

a conveyor and low profile technology, applied in the direction of mechanical conveyors, furnaces, charge manipulation, etc., can solve the problems of requiring precise alignment, requiring vertical height of conveyors, and more difficult to load and unload conveyers
US20100006395A1Inactive Publication Date: 2010-01-14ZETA GRP MFG LLC +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ZETA GRP MFG LLC
Publication Date
2010-01-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention is a low profile, over-under conveyor with two continuously moving chain loops that form upper and lower tracks on which flexible work platforms ride. Each flexible platform includes two or more spaced metal slats joined by a thin flexible band. The slats include shoes that rest on and frictionally engage the moving chain loops. When one of the platforms reaches the end of one track, the flexible platform frictionally engages and compresses a pneumatic drive wheel and flexes to negotiate a low profile inversion and return on the other track. This allows the conveyor to handle long work platforms, while having a relatively low profile. Asynchronous accumulation and release of the freely moving flexible work platforms is accomplished using stop cylinders mounted inside the frame of the conveyor.
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Description

BACKGROUND OF THE INVENTION

[0001] Accumulating over-under conveyors are well known. These conveyors use chain loops that form tracks for supporting pallets that ride along tracks. The pallets have shoes for engaging the chain loops that form upper and lower tracks. The shoes engage the outside of the chain loop when traveling along the upper track, and the inside of the chain loop when traveling along the lower track. Examples of some over / under conveyor designs are disclosed in U.S. Pat. Nos. 5,495,933 and 5,407,058. These conveyor designs use two loops of triple roller strand conveyor chain that pass around sprocket assemblies. The head sprocket assembly includes a drive sprocket wheel. A series of pallets are positioned atop an upper segment of the chain loops. In the '933 design, each drive sprocket assembly includes a pallet drive disc. Each pallet drive disc has a series of spaced radiused pockets recessed into the perimeter of the disc to form a positive drive. The '058 design...

Claims

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