Self closing drawer slide structure

Claim 1

A SELF-CLOSING DRAWER SLIDE ASSEMBLY COMPRISING; CABINET TRACKS ADAPTED TO BE SECURED TO EACH SIDE OF A CABINET AND ALIGNED WITH A DRAWER OPENING FORMED THEREIN, SAID CABINET TRACKS HAVING UPPER AND LOWER FLANGES, SAID LOWER FLANGES BEING HORIZONTAL THROUGHOUT THEIR LENGTHS BUT HAVING DOWNWARDLY INCLINED PROTRUSIONS FORMED THEREIN INTERMEDIATE THE ENDS THEREOF NEAR THE ENDS DISPOSED MOST REMOTELY FROM SAID DRAWER OPENING, FIRST ROLLERS JOURNALED ON SAID CABINET TRACKS ADJACENT SAID DRAWER OPENING, DRAWER TRACKS ADAPTED TO BE SECURED TO THE SIDES OF A DRAWER RECEIVED BY SAID CABINET AND ENGAGING SAID CABINET TRACKS, SAID DRAWER TRACKS HAVING RUNNERS OVERLYING SAID UPPER FLANGES AND MOVING ON SAID FIRST ROLLERS, SAID RUNNERS BEING HORIZONTAL THROUGHOUT THEIR ENTIRE LENGTHS BUT HAVING UPWARDLY INCLINED PROTRUSIONS FORMED THEREIN ADJACENT THE FRONT OF SAID DRAWER, THE LATERAL EDGES OF EACH OF SAID PROTRUSIONS BEING DETACHED FROM SAID TRACKS, SECOND ROLLERS JOURNALED ON SAID DRAWER TRACKS AND MOVABLE ON THE FLANGES OF SAID CABINET TRACKS, SAID SECOND ROLLERS ENCOUNTERING SAID DOWNWARDLY INCLINED PROTRUSION AND SAID FIRST ROLLERS ENCOUNTERING SAID UPWARDLY INCLINED PROTRUSION UPON SAID DRAWER BEING CLOSED A CERTAIN DEGREE WHEREUPON SAID DRAWER IS SELFCLOSING UNDER THE INFLUENCE OF GRAVITATIONAL FORCE.