Patent ID: 6460205
Filing Date: 2002-10-08
Classification: A61G,B60B

Abstract:
A bed frame with a wheel brake, wherein the improvement comprises:a rotatable member mounted on said bed frame and movable between first and second positions about a first axis of rotation; an arm on said rotatable member having at a distal end thereof a first pivot joint movable with said rotatable member to positions oriented on opposite sides of a center position of said movement; an elongate first link pivotally connected at one end to said first pivot joint; an elongate second link pivotally secured to said bed frame for movement about a second axis of rotation between third and fourth positions and pivotally secured on one side of said second axis of rotation to said first link by a second pivot joint oriented a finite distance from said first pivot joint; a wheel engaging brake swingably suspended from said bed frame and above an outer periphery of a wheel rotatably and swivelably supported on said bed frame for movement into and out of engagement with said outer periphery; an elongate third link pivotally secured at one end thereof to said second link; elastically yieldable resilient means connected intermediate a second end of said third link and said wheel engaging brake and effecting a continuous urging of said third link toward said second link when said rotatable member is in said second position and said first pivot joint is oriented on a side of said center position remote from a side caused by said rotatable member being in said first position; whereby said wheel engaging brake is swung into engagement with said outer periphery of said wheel in response to said rotatable member moving from said first position to said second position and said resilient means yielding to permit said first pivot joint to move from one side to an opposite of said center position, said resilient means effecting a holding of said wheel engaging brake in engagement with said outer periphery of said wheel.