Sliding patio door dual point latch and lock

A latch mechanism for a sliding patio door having a narrow rectangular frame surrounding a window, where a vertical one of said frame sides abuts a vertical casing portion in the door closed position, comprising:

• a handle mounted on said one vertical frame side;
• first and second vertically spaced keepers foxed on said casing portion;
• first and second vertically spaced latches on said one frame side, side latches being movable from a first position clear of said keepers to a second position grasping said keepers upon closing of said door;
• means for biasing said latches toward their first position;
• means for retaining said latches in their second position;
• means mounting said handle for allowing slight movement of said handle when said handle is engaged to open said door;
• and
• means for releasing said retaining means in response to said handle being engaged to open said door including
• a first tie bar extending up said frame side from said handle and engaging the retaining means associated with the first latch;
• a second tie bar extending down said frame side from said handle and engaging the retaining means associated with the second latch;
• and
• means for biasing said tie bars longitudinally toward disengaging said retaining means in response to said slight handle movement.

A latch mechanism for a patio door slidable in a casing, comprising:

• an upper keeper and a lower keeper on the casing;
• an upper latch and a lower latch on said door, said upper and lower latches grasping said upper and lower keepers respectively when the door is moved to its closed position to hold the door in that closed position;
• inner and outer handles mounted on said door between said upper and lower latches;
• and
• an operator releasing said latches from grasping said keepers when either of said handles is pulled toward moving the door away from its closed position, including
• upper and lower latch catches biased toward said upper and lower latches respectively to retain said latches in their grasping position,
• tie bars connected to said latch catches, and
• means operatively connected to said handles for moving said tie bars longitudinally to move said latch catches away from retaining said latches when either of said handles is pulled toward moving the door away from its closed position.

A latch mechanism for a sliding patio door having a narrow rectangular frame surrounding a window, where a vertical one of said frame sides abuts a vertical casing portion in the door closed position, comprising:

• means for mounting a handle on said one vertical frame side, said mounting means allowing slight movement of said handle when said handle is engaged to open said door;
• first and second vertically spaced keepers fixed on said casing portion;
• first and second vertically spaced latches on said one frame side, said latches being movable from a first position clear of said keepers to a second position grasping said keepers upon closing of said door;
• means for biasing said latches toward their first position;
• an ear on each of said latches;
• first and second latch catches biased toward said first and second latches respectively to engage said latch ears when said latch is in its second position;
• first and second tie bars longitudinally housed along said frame side from said handle and engaging the first and second catches respectively;
• and
• links between the handle and the tie bars, said links biasing said tie bars longitudinally toward moving the catches away from engaging said latch ears in response to said slight handle movement.