Oil-less rivet system for a reclining chair mechanism
View Patent ↗A rivet system for use in motion furniture linkage and the like. The rivet system incorporates an electrically conductive plastic washer which eliminates the need for oil lubrication while maintaining the ability to electrostatically paint the linkage assembly.
1. A rivet system pivotally coupling a first connecting link and a second connecting link, the improvement comprising:
a rivet having an enlarged head portion and a shank portion including a shoulder portion adjacent to said head portion and a tenon portion extending from said shoulder portion, said shank portion received within apertures formed through said first and second connecting links;
a thrust washer received on said tenon portion interposed between said first connecting link and said second connecting link, said thrust washer being fabricated of a composition having a plastic material and an electrically conductive material, which substantially uniformly conducts electricity between said first and second connecting links;
a spring bushing received on said shank portion having a washer interposed between said first connecting link and said enlarged head portion, and a bush portion received within said aperture formed in said first connecting link, said spring bushing being fabricated of a low friction plastic material and adapted to provide an axial thrust within said rivet system.
2. The rivet system of claim 1 wherein said composition comprises nylon and carbon.
3. A rivet system of the type having a rivet pivotally coupling a first connecting link, a second connecting link and a third connecting link, the improvement comprising:
a rivet having an enlarged head portion and a shank portion having a shoulder portion adjacent to said head portion and a tenon portion, said shank portion received within apertures formed through said first, second and third connecting links;
a first thrust washer received on said tenon portion interposed between said first connecting link and said second connecting link, said first thrust washer being fabricated of a composition having a plastic material and an electrically conductive material, which substantially uniformly conducts electricity between said first and second connecting links;
a second thrust washer interposed between said first connecting link and said third connecting link, said shoulder portion received within said second thrust washer and said third connecting link, said second thrust washer being fabricated of said composition having a plastic material and an electrically conductive material, which substantially uniformly conducts electricity between said first and third connecting links;
a spring bushing received on said shank portion having a washer interposed between said first connecting link and said enlarged head portion, and a bush received within said apertures formed in said second and third connecting link, said spring bushing being fabricated of a low friction plastic material and adapted to provide an axial thrust within said rivet system.
4. The rivet system of claim 3 wherein said composition comprises nylon and carbon.