Patent ID: 6135404
Filing Date: 2000-10-24
Classification: A47B,Y10S

Abstract:
A mounting mechanism for mounting a support for an art device on a base, comprising a mounting member for attachment to said base; a four bar linkage having a first end for mounting said support and a second end pivotally connected to said mounting member for permitting vertical swinging movement of said support relative to said mounting member between lower and upper positions, said linkage including a relatively upper link, a relatively lower link, a first end link, a second end link, and first, second, third and fourth pivot connections having parallel axes, wherein said upper link has opposite ends pivotally coupled to said first end and second end links by said first and second pivot connections and said lower link has opposite ends pivotally coupled to said first end and second end links by said third and fourth pivot connections, and said second end of said linkage is pivotally connected to said mounting member solely by said second pivot connection; and a locking means for releasably retaining said support in a desired position intermediate said lower and upper positions, said locking means including a first locking surface on said linkage and a second locking surface of said mounting member, said first locking surface being normally gravitationally biased into engagement with said second locking surface for releasably locking said support against downwardly directed vertical swinging movement, and said first locking surface is released from engagement with said second locking surface by applying an upwardly directed manual force to said support.