Patent ID: 7780249

Claim:
A dual motion opening system for a display unit having a plurality of plates, wherein each plate is glass or plastic, single or double, and each plate has a mechanical structure comprising: a first section bar ( 3 ) that is fixed to a gripper that holds the plate ( 1 ); a second section bar ( 10 ) that is connected to the display unit; and at least one first support arm ( 5 , 5 ′) and one second support arm ( 6 , 6 ′) that are hinged upon said section bars ( 3 , 10 ) by supports ( 4 , 4 ′, 11 , 11 ′) and pins ( 7 , 7 ′, 12 , 12 ′), said support arms ( 5 , 5 ′, 6 , 6 ′) differing in length; wherein the mechanical structure is connected to display counter or window near a base of tank by fixing said second section bar ( 10 ) to the display counter or window or by fixing said second section bar ( 10 ) to a third section bar ( 9 ) that is in turn fixed to the display unit; wherein said second support arm ( 6 , 6 ′) is longer than said first support arm ( 5 , 5 ′) and bears a feedthrough ( 6 . 1 ) near its end that fits the support ( 4 ′) fixed to said first section bar ( 3 ) fixed to the gripper that holds the plate ( 1 ), said feedthrough ( 6 . 1 ) being large enough for the pin ( 7 ′) of the support ( 4 ′) to slide into; wherein the system also contains a spring closing mechanism comprising a pin ( 14 ) around which a spring ( 14 . 2 ) is wrapped, and which fits into a bush ( 15 ), said pin ( 14 ) being fixed to a crop of said first section bar ( 3 ) that is in turn fixed to the gripper that holds the plate ( 1 ), said bush ( 15 ) being fixed to a crop of said second section bar ( 10 ) that in turn is fixed to the display counter or window or to said third section bar ( 9 ); wherein the system also contains a lock ( 18 ) comprising a slot ( 18 . 1 ) with a catch mechanism including a pin ( 19 ), said pin ( 19 ) being connected to said first section bar ( 3 ) fixed to the plate ( 1 ), whereas said lock ( 18 ) is connected directly or indirectly to the display counter or window, said lock ( 18 ) being unblocked by a lever ( 20 ) that releases the catch mechanism of the lock ( 18 ).