The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 1994
Filed:
Jan. 21, 1992
Gopal S Revankar, Moline, IL (US);
Deere & Company, Moline, IL (US);
Abstract
A method for impregnating a plastic product with a hard wear-resistant material surface layer comprises providing a support plate having a desired shape and further having an adhesive layer on at least a portion thereof; introducing a plurality of particles comprising a hard wear-resistant material onto the adhesive layer; curing the adhesive so as to anchor the particles onto the support plate; placing the support plate into a mold cavity; introducing a polymer material into the cavity; exposing the sheet and polymer material to conditions effective to provide a polymer product having a hard wear-resistant material surface layer therein; cooling the mold and removing the support sheet therefrom. In a preferred embodiment, a regular pattern of particles is provided by providing a mesh plate having a desired pattern of holes set for predetermined size of wear-resistant particles; spreading the particles onto the mesh plate so as to provide a particle in substantially all of the holes; and transferring the pattern of particles onto the adhesive layer so as to minimize contact with the adhesive. The polymer material employed in the present invention can be a polymer powder, a liquified polymer or a two part adhesive mixture which reacts to form a thermoset polymer product.