Patent ID: 8047585

Claim:
An electric door strike mechanism cooperable with a latch bolt, said mechanism having a fail safe and fail secure mode, said electric door strike mechanism comprising: (a) a housing having a cavity having an opening with opposite edges, said cavity adapted to receive a latch bolt; (b) a first keeper having a first cam having a detent, said first keeper pivotally mounted to the housing at one edge of said opening; (c) a second keeper having a second cam having a detent, said second keeper pivotally mounted to the housing at the other edge of the opening, said first and second keepers having a first position blocking the opening and a second open position allowing a latch bolt to enter and be withdrawn from the cavity through the opening; (d) a first release pawl positioned adjacent said first cam and in said first position of said first keeper engaging said detent; (e) a second release pawl positioned adjacent said second cam and in said first keeper position engaging said detent; (f) a locking bar moveable between locked and unlocked positions, said locking bar having first and second sections, said first section being adjacent to said first pawl, and said second section being adjacent to said second pawl, said sections each having first and second stops engageable with said associated release pawl to establish either a fail safe or fail secure mode of operation; (g) an electrically energized operator for selectively moving the locking bar between locked and unlocked positions; and (h) means for selectively positioning said locking bar in either a fail safe or fail secure mode when said operator is not energized.