Patent ID: 7716788

Claim:
A hinge for a tablet computer extension pad comprising a pivoting leaf having a proximal end; a distal end; a mounting segment being formed on and protruding from the proximal end of the pivoting leaf; a pintle being formed coaxially on and extending from the distal end of the pivoting leaf and having a distal end; and a pinhole being formed transversely in the pintle; and a limiting pin being mounted securely in the pinhole in the pintle and extending out of the pintle; a limiting segment being tubular, being mounted slidably and rotatably around the pivoting leaf and having a pivoting end abutting the distal end of the pivoting leaf; an opposite stationary end; an outside wall; a pivoting hole being formed coaxially through the limiting segment and having a pivoting hole end being mounted slidably and rotatably around the pintle; and an opposite stationary hole end; a limiting slot being formed longitudinally in the proximal end of the limiting segment, communicating with the pivoting hole, corresponding to and selectively engaging the limiting pin; and at least one guide slot being formed longitudinally in the stationary end of the limiting segment and communicating with the pivoting hole; a stationary leaf being mounted rotatably on the pivoting leaf, being mounted slidably through the stationary end of the limiting segment and having a proximal end; a distal end; a shaft being formed coaxially on and extending from the distal end of the stationary leaf, being mounted slidably in the stationary end of the pivoting hole, attached rotatably to the distal end of the pintle and having a distal end; at least one guide pin being mounted transversely in and extending from the shaft, corresponding to, being mounted slidably in and engaging the guide slot; and a mounting segment being formed on the proximal end of the stationary leaf; and a spring being mounted around the shaft of the stationary leaf, being mounted between and pressing against the distal end of the stationary leaf and the stationary end of the limiting segment.