Patent ID: 8267616

Claim:
A window fastener including a pivot joint for coupling first and second components, the window fastener including: a first component, said first component comprising a substantially cylindrical boss protruding therefrom, wherein said boss includes one or more engagement elements on a surface thereof; a second component, said second component having an opening therethrough, wherein said boss of said first component is inserted into said opening on a first side of said second component; a fastener comprising a head and a shank, wherein said shank is inserted into said opening from a second side of said second component opposite said first side, and wherein said shank is received in a bore in the boss; and a first washer disposed between the head of the fastener and a surface on said second side of the second component adjacent the opening, the first washer including an inner bore, a first transition portion inclined outwards from a first end of the inner bore towards a first side of the first washer and a second transition portion opposite the first transition portion inclined outwards from a second end of the inner bore towards a second side of the first washer, the washer having an axis extending through said inner bore; wherein the shank of said fastener is inserted through said inner bore such that said shank is substantially coaxial with said axis; and wherein when said fastener is received in the bore in said boss, said engagement elements penetrate into the first transition portion of said first washer to couple the first washer to the boss, and the head of said fastener engages with said second transition portion, thereby securing said first component and said second component in pivotable engagement relative to each other about said axis.