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US 4,305,343 AGranted
Polymer coated chain link fencing
AssigneeSonco Wholesale Fence, Inc.
InventorClyde A. Long
Life of this patent
Estimating the term…
Abstract
A method for polymer coating of chain link fence is disclosed. The thermoplastic polymer is applied in a fluidized bed after the fence is woven. The fence is compressed in the fluidized bed to allow coating of all portions of the chain link.
Claims1
A machine for applying heated polymer powder to a chain link fence comprising:
- (a) a means to heat the chain link fencing,
- (b) an initial drive roller to introduce the chain link to the machine,
- (c) selectively disengageable means to drive said initial drive roller,
- (d) a fluidizing bed vessel having a lower air chamber, a porous air plate above said chamber and a portion above the plate for the polymer powder and the chain link,
- (e) a second drive roller to remove the chain link from the machine,
- (f) selectively disengageable means to drive said second drive roller,
- (g) control means interconnecting said first and second drive means to allow the chain link to be compressed within said machine,
- (h) guide means to hold the said chain link below the level of the top of the fluidized bed during the passage through the machine,
- (i) a pair of compression rollers within said machine below said level of the top of said fluidized bed which compress said chain link and separate the links of the chain before they pass between said compression rollers,
- whereby the entire chain link fabric is covered by the polymer powder during the passage through the machine.
7 more elements
Dependencies are inferred from the claim text.