Patent ID: 7404236

Claim:
A display appliance having a first casing body rotatably coupled to a second casing body via a hinge assembly for adjusting relative rotation between the first and second casing bodies, the display appliance comprising: a hinge shaft, disposed along a pivot axis of the hinge assembly, having a head portion and a distal end for engaging with a coupling member in opposition to the head portion; first and second plates, respectively fixed to the first and second casing bodies, each of said first and second plates having a vertical portion receiving said hinge shaft to enable at least one of the first and second casing bodies to pivot on the pivot axis via the corresponding vertical portion, each vertical portion having a first side opposing one of the head portion and the coupling member and having a second side opposing the other vertical portion; and a tension washer, disposed adjacent at least one of the first and second sides of a vertical portion of one of the first and second plates, receiving said hinge shaft and applying an elastic force to said hinge shaft when the coupling member is drawn toward the head portion to compress said tension washer, wherein said tension washer is a stationary washer which is prevented from rotating relative to the vertical portion against which it bears.