Seat back angle adjustment mechanism

Claim 1

A BACK-ANGLE ADJUSTMENT MECHANISM FOR A SEAT HAVING A SEAT PART AND A BACK PART PIVOTALLY CONNECTED TO THE SEAT PART, COMPRISING; A MOVABLE SLIDE FIXED TO THE REAR PORTION OF THE SEAT PART FOR RECIPROCAL LINEAL MOTION IN RESPECT TO THE SEAT PART AND IN A DIRECTION GENERALLY TRANSVERSE TO THE SEAT PART; TWO GUIDE MEMBERS SLIDABLY ENGAGED WITH EACH OTHER ONE OF SAID MEMBERS BEING FIXED TO SAID SLIDE AND THE OTHER OF SAID MEMBERS BEING FIXED TO THE BACK PART; ONE OF SAID MEMBERS EXTENDING GENERALLY HORIZONALLY AND OBLIQUE TO THE DIRECTION OF MOVEMENT OF SAID SLIDE MEMBER AND THE OTHER OF SAID MEMBERS EXTENDGENERALLY VERTICALLY AND ENGAGING SAID HORIZONTALLY EXTENDING MEMBER AT A FORE AND AFT LOCATION DETERMINED BY THE TRANSVERSE POSITION OF SAID SLIDE IN RESPECT TO THE SEAT PART, THE MOVEMENT OF THE SLIDE CAUSING A VARIANCE OF SAID LOCATION TO THEREBY VARY THE BACK-ANGLE IN ACCORDANCE WITH SAID MOVEMENT.