Oil-less rivet system for a reclining chair mechanism
First Claim
Patent Images
1. A rivet system of the type having a rivet pivotally coupling a first connecting link and a second connecting link, the improvement comprising:
- a metal 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 and second connecting links;
a 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 low friction plastic material and having a metallic contact adapted to conduct 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 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.
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Accused Products
Abstract
An improved rivet system is disclosed. A wall proximity reclining/tilt chair includes the improved rivet system which eliminates the need for oil lubrication and additional bushings. The rivet system is such that installation is simplified and manufacturing inconsistencies are reduced. In this manner, the rivet system can be installed with less need for quality control confirmations.
47 Citations
17 Claims
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1. A rivet system of the type having a rivet pivotally coupling a first connecting link and a second connecting link, the improvement comprising:
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a metal 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 and second connecting links;
a 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 low friction plastic material and having a metallic contact adapted to conduct 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 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. - View Dependent Claims (2)
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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:
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a metal 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 plastic material and having a metallic contact adapted to conduct 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 a plastic material and having a metallic contact adapted to conduct 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. - View Dependent Claims (4)
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5. A pivoting linkage having a path of electrical continuity therethrough to facilitate electrostatic painting thereof, the pivoting linkage comprising:
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a first link having a first aperture formed therethrough;
a second link having a second aperture formed therethrough;
a metal rivet having an enlarged head portion and a shank portion including a shoulder extending from said enlarged head portion and received within said first aperture and a tenon extending from said shoulder and received within said second aperture, said metal rivet in electrical contact with said second link;
a bushing received on said shank portion to provide an axial biasing force between said metal rivet and said first link; and
a thrust washer received on said shank portion and interposed between said first link and said second link, said thrust washer being a plastic washer having an electrically conductive element disposed therein and in contact with said first link when said bushing biases said thrust washer into contact therewith. - View Dependent Claims (6, 7, 8, 9)
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10. A pivoting linkage having a path of electrical continuity therethrough to facilitate electrostatic painting thereof, the pivoting linkage comprising:
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a first link having a first aperture formed therethrough;
a second link having a second aperture formed therethrough;
a third link having a third aperture formed therethrough;
a metal rivet having an enlarged head portion and a shank portion including a shoulder extending from said enlarged head portion and received within said first and second apertures and a tenon extending from said shoulder and received within said third aperture, said metal rivet in electrical contact with said third link;
a bushing received on said shank portion to provide an axial biasing force between said metal rivet and said first link;
a first thrust washer received on said bushing and interposed between said first link and said second link, said first thrust washer being electrically conductive and in contact with said first and second links when said bushing biases said thrust washer into contact therewith; and
a second thrust washer received on said shank portion and interposed between said second link and said third link, said second thrust washer being electrically conductive and in contact with said second and third links when said bushing biases said second thrust washer into contact therewith. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification