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US 5,876,552 AGranted
Method of fabricating screen for vibratory screening machine
AssigneeDerrick Manufacturing Corporation
InventorJohn J. Bakula
Life of this patent
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AssigneeDerrick Manufacturing Corporation
InventorJohn J. Bakula
Estimating the term…
A screening screen assembly for a vibratory screening machine including an apertured plate or frame, and a bonded subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate or frame. A method of fabricating a screening screen assembly for a vibratory screening machine including the steps of providing a support screen, superimposing a plastic grid onto the support screen, superimposing a finer screening screen onto the fine screening screen, applying heat and pressure to the superimposed screens to fuse the plastic grid and thereby form a flat bonded laminate subassembly by causing the fused plastic grid to permeate the fine screen and the finer screen and the support screen, forming the bonded laminate subassembly into an undulating shape, providing an apertured plate or frame, and bonding the undulating bonded subassembly to the apertured plate or frame.
A method of fabricating a screening screen assembly for a vibratory screening machine comprising the steps of providing a support screen and a fine screening screen, placing said support screen and said fine screening screen in superimposed relationship, providing spaced areas of plastic, fusing said spaced areas of plastic into said superimposed support screen and fine screen to form a bonded subassembly with unobstructed areas of said superimposed support screen and fine screen between said spaced areas of plastic, forming said bonded subassembly into an undulating screen configuration, providing an apertured frame, and bonding said undulating screen configuration to said apertured frame.
A method of fabricating a screening screen assembly for a vibratory screening machine comprising the steps of providing a support screen, superimposing a plastic grid onto said support screen, superimposing a fine screening screen onto said plastic grid, applying heat and pressure to said superimposed support screen and first screen and plastic grid to fuse said plastic grid and thereby form a bonded subassembly by causing said fused plastic grid to permeate said fine screen and said support screen, forming said bonded subassembly into an undulating screen configuration, providing an apertured frame, and bonding said undulating screen configuration to said apertured frame.
Dependencies are inferred from the claim text.