Polyurea coated trailer

Abstract

The present invention relates to polyurea composition coated trailers and methods of making the same. In an embodiment, the present invention is directed to a trailer comprising a frame having a front side and a back side, at least one axle coupled to the frame, a plurality of wheels coupled to the at least one axle, and a polyurea coating, wherein the polyurea coating encapsulates at least a portion of the frame. In an embodiment, the present invention is directed to a method for protecting a metal trailer from corrosion comprising cleaning the surfaces of a metal trailer and applying a layer of a polyurea composition to the surfaces of the metal trailer.

1 . A boat trailer comprising:
 a frame having a front end and a back end, the frame including first and second spaced-apart side rails having lengths that extend between the front and back ends of the frame, the first and second side rails having portions that diverge from one another as the portions of the first and second side rails extend from the front end toward the back end of the frame, the frame also including a plurality of transverse frame members that extend across a width of the frame between the first and second side rails;   a boat hull support structure coupled to the frame;   at least one axle coupled to the frame;   a plurality of wheels coupled to the at least one axle;   a winch stand coupled to the frame; and   
       a coating that encapsulates at least portions of the first and second side rails, the transverse frame members, the axle, and the winch stand, the coating including at least isocyanate and a reactive amine. 
     
     
         2 . The boat trailer of  claim 1 , wherein the reactive amine includes an aliphatic or an aromatic amine resin. 
     
     
         3 . The boat trailer of  claim 1 , wherein the coating comprises a polyurea composition. 
     
     
         4 . The boat trailer of  claim 1 , further comprising step member supports on which a step is supported, the step member supports projecting outwardly from at least one of the first and second side rails, and the step member supports being coated by the coating. 
     
     
         5 . The boat trailer of  claim 1 , further comprising fender supports on which fenders are supported, the fender supports projecting outwardly from the first and second side rails, and the fender supports being coated by the coating. 
     
     
         6 . The boat trailer of  claim 3 , further comprising step member supports on which a step is supported, the step member supports projecting outwardly from at least one of the first and second side rails, and the step member supports being coated by the coating. 
     
     
         7 . The boat trailer of  claim 3 , further comprising fender supports on which fenders are supported, the fender supports projecting outwardly from the first and second side rails, and the fender supports being coated by the coating. 
     
     
         8 . The boat trailer of  claim 1 , wherein the first and second side rails encapsulated by the coating have a generally rectangular cross-sectional shape. 
     
     
         9 . The boat trailer of  claim 1 , wherein the first and second side rails encapsulated by the coating have a generally C-shaped cross-sectional shape. 
     
     
         10 . The boat trailer of  claim 1 , wherein the boat trailer defines a central longitudinal axis that extends between the front and back ends of the frame at a location between the first and second side rails, wherein the first and second side rails have generally C-shaped transverse cross-sections encapsulated by the coating, the C-shaped cross-sections having open sides that face toward the central longitudinal axis. 
     
     
         11 . The boat trailer of  claim 1 , further comprising step member supports positioned adjacent to the front end of the frame on which a step is supported, the step member supports projecting outwardly from at least one of the first and second rails, and the step member supports being coated by the coating, and also further comprising fender supports on which fenders are supported, the fender supports projecting outwardly from the first and second rails, and the fender supports being coated by the coating. 
     
     
         12 . The boat trailer of  claim 1 , wherein the coating has a thickness of at least 0.015 inches. 
     
     
         13 . The boat trailer of  claim 1 , wherein the coating has a thickness in the range of 0.015 inches to 0.035 inches. 
     
     
         14 . The boat trailer of  claim 1 , wherein the coating has a thickness of 0.025 inches. 
     
     
         15 . The boat trailer of  claim 3 , further comprising step member supports positioned adjacent to the front end of the frame on which a step is supported, the step member supports projecting outwardly from at least one of the first and second rails, and the step member supports being coated by the coating, and also further comprising fender supports on which fenders are supported, the fender supports projecting outwardly from the first and second rails, and the fender supports being coated by the coating. 
     
     
         16 . The boat trailer of  claim 3 , wherein the coating has a thickness of at least 0.015 inches. 
     
     
         17 . The boat trailer of  claim 3 , wherein the coating has a thickness in the range of 0.015 inches to 0.035 inches. 
     
     
         18 . The boat trailer of  claim 3 , wherein the coating has a thickness of 0.025 inches.