Patent ID: 7096537

Claim:
An adjustable hinge device for use in a foldable apparatus, the foldable apparatus including a cover and a body, the cover connected with the body by the adjustable hinge, the cover rotating relative to the body to a fully opened position and thereby defining a maximum opening angle, the adjustable hinge device comprising: a rotatable portion capable of rotating relative to the body, comprising: a cap having a first protrusion portion; a cylinder, the cap sleeving to the cylinder; a ring defining a space; and a shaft connected with the ring and the cylinder respectively; and a fixed portion fixedly attached to the body, comprising: a holder connected with the body, the holder sleeving to the cylinder and defining a recess, the first protrusion portion being selectively disposed in the recess; and a cam having a second protrusion portion connected with the holder, the second protrusion portion selectively received in the space; wherein, when there is a relative movement between the rotatable portion and the fixed portion, the maximum opening angle can be adjusted.