Patent ID: 7043861

Claim:
A sign holding mechanism permitting rapid changes of thin, rigid signage, which is rugged and able to withstand heavy wind buffeting caused by speeding cars and trucks, said sign holding structure comprising, an external mounting structure having at least one upright post with a sign fastened thereto, said post having a lower end and an upper end, an upwardly facing hook member secured to said lower end of said upright post for attachment to said external structure, and a downwardly facing hook member secured to the upper end of said post for attachment to said external structure, said upper end having at least one threaded bore hole therein and said downwardly facing hook member having at least one though bore hole, said downwardly facing hook member having a spring stop shoulder in said through bore hole, a retainer member extending through the bore hole, said retainer member having a smooth shank, a threaded lower end and a head, said threaded lower end extending past the shoulder and being in threaded engagement with said threaded bore hole, and a spring between said head and said spring stop shoulder, whereby said downwardly facing hook member can be moved so as to compress and load the spring to expand the space between said upwardly facing and downwardly facing hook members so that the post with the two hook members and said spring urging said downwardly facing hook member downward is securely grasped by said hook members to the external structure.