Patent ID: 6742461
Filing Date: 2004-06-01
Classification: A47B

Abstract:
A mechanism for raising and lowering panel to different heights, wherein the panel makes up the whole or part of a tabletop of a table, wherein the said tabletop is supported on supporting frame that is supported by upright supporting members on a horizontal support plane, wherein the said mechanism on its entirety is made up of a least one element comprising:at least one first raising element having a compressed elastic member and having an upper end attached to a bottom of the panel and a lower end attached to the supporting frame; a latching means comprising a latching pin, a pin housing and a grooved block, wherein: the pin housing is attached to the bottom of the panel and the grooved block is attached to the supporting frame; the latching pin has a first end and a second end and is bent into shape wherein axes of the first and second ends of the latching pin are parallel to each other but do not coincide with each other; the first end of the latching pin fits in said pin housing, allowing the second end of the said latching pin to swivel about the pin housing; the pin housing is attached to the bottom of the panel; the second end of the latching pin is kept in the groove of said grooved block by means of a force applied to the latching pin by a compressed elastic member in the pin housing; the groove has a closed-loop-shape; the groove has depth that varies from deep to shallow as the closed-loop is traced along its entire length from a starting point and back to the starting point again; and the second end of the latching pin moves in the groove as the panel moves up and down.