Patent ID: 7222890

Claim:
A multiple backset latch comprising: A housing body assembly and a latch bolt housing assembly; said latch bolt housing assembly comprising a latch bolt head shiftable between extended and retracted positions; said housing body assembly comprising: A housing body channel member; a cam support member disposed adjacent and within said housing body channel member and which interacts with said housing body channel member; a bolt retractor member disposed adjacent said cam support member opposite said housing body channel member; a cam lever member disposed adjacent said bolt retractor member opposite said cam support member and having a first and a second bossed end; a positioning spring member disposed adjacent said cam lever member opposite said bolt retractor member, wherein said positioning spring member comprises an aperture sized and shaped to rotatably accept said second bossed end of said cam lever member; said positioning spring member securing together said cam support plate member with said cam lever member, wherein said positioning spring member is slidable laterally to align with said cam support plate member and said housing body channel member for a desired backset; and a housing body plate disposed adjacent said positioning spring member opposite said cam lever member; wherein said positioning spring member comprises two protruding and opposing dimples on the perimeter of said aperture in said positioning spring member, wherein said two protruding and opposing dimples interact with corresponding recessed openings in said housing body plate member, wherein interaction of said two protruding and opposing dimples with said corresponding recessed openings secures said housing body plate in at least one of a 60 mm and a 70 mm backset depending on which of said dimples is positioned to interact with which of said recessed openings; wherein said housing body channel member and said housing body plate enclose said cam support plate member, said bolt retractor member, said cam lever member and said positioning spring member therebetween to form said housing body assembly.