Multi-point locking system for patio doors, French doors/windows, large casement windows, and the like

A lock system configured to lock a patio door with respect to a master frame at a plurality of locations, said lock system comprising:

• a keeper, said keeper comprising:
• a first lock pin, and a second lock pin;
• each of said first and second lock pins formed to include a shaft portion and a head portion;
• said keeper being secured to said master frame;
• a lock assembly, said lock assembly comprising:
• a housing, said housing having a main opening on a first side defining an interior surface that forms a housing cavity, and a second opening formed on a central portion of an adjacent side that interconnects with said cavity to form at least a rear wall, a bottom wall, a first side wall, a second side wall, a first upper side wall portion, and a second upper side wall portion;
• wherein said rear wall comprises:
• a first flange and a second flange configured to form a track;
• a cover member, said cover member configured to enclose said main opening of said housing when said cover is secured to said housing;
• said cover member comprising:
• a first flange and a second flange configured to form a track;
• and wherein said track of said cover member is aligned with said track of said housing when said cover member is secured to said housing;
• means for securing said cover member to said housing;
• a first locking member;
• said first locking member comprising:
• a flange;
• said flange comprising:
• an elongated opening formed with a first portion having a first width configured to permit sliding of said head portion of said first lock pin through said elongated opening, and a second portion with a second width configured to block sliding of said head portion of said first lock pin through said elongated opening;
• a protrusion, said protrusion configured to protrude from a first side of said flange, of said first locking member, said protrusion comprising:
• a first slider member configured to protrude in a first lateral direction with respect to an axial direction of said flange of said first locking member;
• and
• a second slider member configured to protrude in a second lateral direction with respect to the axial direction of said flange of said first locking member;
• wherein said first slider member and said second slider member are configured to be slidably received in a first portion of said track in said housing and a first portion of said track in said cover member, respectively;
• a first cam following surface;
• a second cam following surface;
• a second locking member;
• said second locking member comprising:
• a flange comprising:
• an elongated opening formed with a first portion having a first width configured to permit sliding of said head portion of said second lock pin through said elongated opening of said flange of said second locking member, and a second portion having a second width configured to block sliding of said head portion of said second lock pin through said elongated opening of said flange of said second locking member;
• a protrusion configured to protrude from a first side of said flange of said second locking member, and comprising:
• a first slider member configured to protrude in a first lateral direction with respect to an axial direction of said flange of said second locking member;
• and;
• a second slider member configured to protrude in a second lateral direction with respect to the axial direction of said flange of said second locking member;
• wherein said first and said second slider members of said second locking member are configured to be slidably received in a second portion of said track in said housing and a second portion of said track in said cover member, respectively;
• a rocker arm, said rocker arm comprising:
• a hub, a first arm configured to extend from a first portion of said hub, and a second arm configured to extend from a second portion of said hub;
• wherein said hub of said rocker arm is pivotally mounted to said housing;
• wherein said first arm is pivotally coupled to said first locking member;
• wherein said second arm is pivotally coupled to said second locking member;
• a driving member, said driving member being pivotally mounted to said housing and configured to be actuated by a user;
• said driving member comprising:
• a cam portion;
• wherein when said driving member is rotated from a first rotation position to a second rotation position, said cam portion contacts said first cam following surface to drive said first locking member to slide in a first unlock direction, causing said second locking member to be driven by said rocker arm to slide in a second unlock direction, to cause said first width of said elongated opening of said first locking member to align with said first lock pin and cause said first width of said elongated opening of said second locking member to align with said second lock pin, to unlock said lock system and permit the patio door to slide away from the keeper into a door open position.