A collinear latching and locking system is disclosed. In embodiments, the system includes a strike with a lock bolt disposed at or defined by an end of the strike. The system further includes a latch pawl configured to surround at least a portion of the strike. The strike and the latch pawl are configured to actuate linearly along the same axis. In this regard, the strike and the latch pawl have a collinear configuration and actuation path. The system further includes a latch cam configured to actuate the latch pawl from a latched position to an unlatched position when the latch cam is turned.

A door latch system (1) comprises a latch (10) and rose bases (60A,B) which clamp together against a door panel through a cross-drilling in the door panel by screws 80 engaging in bosses (94) above and below the latch body (12). The latch body is supported in the cross drilling by an adaptor (40) which in turn supports sleeve extensions (90) of the rose bases to prevent the rose bases from turning on operation of the handle knob/levers attached to the rose bases. The sleeve extensions are open, (that is, C-shaped in section) so that the diameter of the parts of the system within the cross drilling can be minimised, whereby the diameter of the rose bases can likewise be kept within desirable limits of size.

A latch assembly is provided where a latch bolt is moveable to open and close a door by unblocking pivotal movement of the latch bolt. Turning a door knob or door handle does not directly result in a corresponding retraction of the latch within a sleeve, but rather unblocks the bolt to freely pivot away from a latched position. In some embodiments, the latch assembly may include a sleeve that allows for a backset to be infinitely adjusted relative to an aperture of the sleeve. In some embodiments, the latch assembly may further include a dead latch to provide additional security against forced entry.

A deadbolt latching mechanism for a door. Specifically, the mechanism relates to a fortified deadbolt latch providing fortification against attempted prying of a door against the locking mechanism. A fortified deadlock latch device configured to reversibly move between an extended locked and retracted unlocked position, the device comprising: a. a latch housing having a longitudinal axis; b. a latching assembly, the latching assembly slidably coupled to the latch housing along the longitudinal axis; c. a bolt assembly coupled to the latching assembly, the bolt defining a circumferential surface; d. a rocker hingedly coupled to the bolt assembly, the rocker having a proximal end and a distal end, wherein, the distal end is configured to protrude beyond the bolt assembly's circumferential area and engage a frame jamb box in the extended position; and e. a bolt sleeve or a face plate, operably coupled to the latch housing.

An adjustable latch configured to accommodate different backset lengths. The adjustable latch includes inner and outer housings, at least a portion of the inner housing being structured for axial and rotational displacement within the outer housing as an engagement projection of the inner housing is displaced about an adjustment slot of the outer housing. The apparatus may include a bolt assembly having a bolt rod and a latch bar, the bolt rod having projections that are structured to be adjacent to the latch bar when the bolt rod is at a first rotational position and at first or second axial positions. When the bolt rod is at a second rotational position, the axial positions of the bolt rod and the inner housing relative to at least the latch bar and outer housing, respectively, may be adjusted to adjust the backset setting of the latch.

An adjustable latch configured to accommodate different backset lengths. The adjustable latch includes inner and outer housings, at least a portion of the inner housing being structured for axial and rotational displacement within the outer housing as an engagement projection of the inner housing is displaced about an adjustment slot of the outer housing. The apparatus may include a bolt assembly having a bolt rod and a latch bar, the bolt rod having projections that are structured to be adjacent to the latch bar when the bolt rod is at a first rotational position and at first or second axial positions. When the bolt rod is at a second rotational position, the axial positions of the bolt rod and the inner housing relative to at least the latch bar and outer housing, respectively, may be adjusted to adjust the backset setting of the latch.

A latch assembly is provided where a latch bolt is moveable to open and close a door by unblocking pivotal movement of the latch bolt. Turning a door knob or door handle does not directly result in a corresponding retraction of the latch within a sleeve, but rather unblocks the bolt to freely pivot away from a latched position. In some embodiments, the latch assembly may include a sleeve that allows for a backset to be infinitely adjusted relative to an aperture of the sleeve. In some embodiments, the latch assembly may further include a dead latch to provide additional security against forced entry.

A door latch system (1) comprises a latch (10) and rose bases (60A,B) which clamp together against a door panel through a cross-drilling in the door panel by screws 80 engaging in bosses (94) above and below the latch body (12). The latch body is supported in the cross drilling by an adaptor (40) which in turn supports sleeve extensions (90) of the rose bases to prevent the rose bases from turning on operation of the handle knob/levers attached to the rose bases. The sleeve extensions are open, (that is, C-shaped in section) so that the diameter of the parts of the system within the cross drilling can be minimised, whereby the diameter of the rose bases can likewise be kept within desirable limits of size.