A flush glass apparatus includes an operation glass comprising a glass portion and a frame and configured to open and close an opening of a fixed glass by sliding in a lateral direction, and a locking device configured to lock and unlock the operation glass, wherein the locking device comprises an operation handle installed on the frame, an upper locking lever installed on an upper side of the frame, a first lower locking lever installed on a lower side of the frame, a second lower locking lever installed on the lower side of the frame, an upper operation member installed on the upper side of the frame and connected to the operation handle, and a lower operation member installed on the lower side of the frame and connected to the operation handle.

A flush glass apparatus includes an operation glass comprising a glass portion and a frame and configured to open and close an opening of a fixed glass by sliding in a lateral direction, and a locking device configured to lock and unlock the operation glass, wherein the locking device comprises an operation handle installed on the frame, an upper locking lever installed on an upper side of the frame, a first lower locking lever installed on a lower side of the frame, a second lower locking lever installed on the lower side of the frame, an upper operation member installed on the upper side of the frame and connected to the operation handle, and a lower operation member installed on the lower side of the frame and connected to the operation handle.

A sash window fastener includes: a latch assembly; a lock assembly mounted upon the meeting rail; and a stop assembly mounted to the master frame. The lock assembly includes a pivotable cam to engage a keeper on the master frame to lock the window, and a pivotable follower arm, which interconnects with the latch assembly within the meeting rail, so cam rotation that drives arm rotation also causes translation of the latch. The cam occupies: an extended position to secure the cam to the keeper, with the latch tongue engaging the master frame to prevent tilting, also being positioned below a stop assembly protrusion to redundantly lock the window; a first retracted position permitting sliding of the window; and a second retracted position permitting tilting of the sash window. A slidable stop on the stop assembly dampens sliding sash window movement and subsequently acts as a vent stop.

A lockable sliding door is described. A ratcheted track allows the movable panel of the door to be selectively locked in both closed and vented positions. A lever is positioned along a midpoint of the movable panel to allow for the easy engagement of the locking mechanism. Further, the locking mechanism is carried on the movable panel. The technology is configured to allow the sliding door to be locked in various configurations, with the door partially opened, completely open, or completely closed. The technology may also be utilized on windows or any other architectural features with a slide-to-open and close design.

The self-locking guillotine door assembly includes a door, a locking mechanism attached to the door, and a cable attached to the locking mechanism. Pulling the cable releases the locking mechanism and lifts the locking mechanism and door. Pushing up on the bottom of the door locks the locking mechanism and resists lifting the door. The locking mechanism can include a post, a vertical slide with a slot, connector bars and cams such that when the cable is pulled, the cable lifts the vertical slide to lift proximal ends of the connector bars, which pivots the cams to release the locking mechanism. When the enclosure door is pushed up from the bottom, the locking mechanism pivots the cams towards the top of the enclosure door to lock the locking mechanism and resist lifting of the enclosure door.

A retention mechanism for a pair of bi-parting doors of a transit vehicle includes a first track connected to a first door of the pair; a second track connected to a second door of the pair; a first retention assembly connected to the transit vehicle and configured to retain the first track in the closed position; a second retention assembly connected to the transit vehicle and configured to retain the second track in the closed position; a first engagement member connected to the second track, the first engagement member being configured to engage the first retention assembly to cause the first retention assembly to move to retain the first track in the closed position when the second track is in the closed position; and a second engagement member connected to the first track, the second engagement member being configured to engage the second retention assembly to cause the second retention assembly to move to retain the second track in the closed position when the first track is in the closed position.

A retention mechanism for a pair of bi-parting doors of a transit vehicle includes a first track connected to a first door of the pair; a second track connected to a second door of the pair; a first retention assembly connected to the transit vehicle and configured to retain the first track in the closed position; a second retention assembly connected to the transit vehicle and configured to retain the second track in the closed position; a first engagement member connected to the second track, the first engagement member being configured to engage the first retention assembly to cause the first retention assembly to move to retain the first track in the closed position when the second track is in the closed position; and a second engagement member connected to the first track, the second engagement member being configured to engage the second retention assembly to cause the second retention assembly to move to retain the second track in the closed position when the first track is in the closed position.

A self-locking guillotine door assembly and method for an animal enclosure is disclosed. The assembly includes a door, a locking mechanism attached to the door, and a cable attached to the locking mechanism. Pulling the cable releases the locking mechanism and lifts the locking mechanism and door. Pushing up on the bottom of the door locks the locking mechanism and resists lifting the door. The locking mechanism can include a post, a vertical slide with a slot, connector bars and cams such that when the cable is pulled, the cable lifts the vertical slide to lift proximal ends of the connector bars, which pivots the cams to release the locking mechanism. When the enclosure door is pushed up from the bottom, the locking mechanism pivots the cams towards the top of the enclosure door to lock the locking mechanism and resist lifting of the enclosure door.

A lockable sliding door is described. A ratcheted track allows the movable panel of the door to be selectively locked in both closed and vented positions. A lever is positioned along a midpoint of the movable panel to allow for the easy engagement of the locking mechanism. Further, the locking mechanism is carried on the movable panel. The technology is configured to allow the sliding door to be locked in various configurations, with the door partially opened, completely open, or completely closed. The technology may also be utilized on windows or any other architectural features with a slide-to-open and close design.

A door retention system for use with a building is described herein. The building includes a frame and a sliding door. The door retainer system includes a door retainer coupled to the frame and a latch retainer assembly coupled to the sliding door. The door retainer includes a housing coupled to the frame and a retainer bolt extending outwardly from the housing. The latch retainer assembly includes a retainer catch coupled to the sliding door and a pivot catch coupled to the retainer catch. The retainer catch includes a slot defined along an outer surface of the retainer catch configured to receive the retainer bolt therein as the sliding door is moved from the open position to the closed position. The pivot catch is movable between a latched position and an unlatched position and configured to engage the retainer bolt in the latched position.