Abstract: A lock assembly comprising a throw bolt, a bolt holder and a bolt keeper. The bolt keeper comprises a buffer and a biasing mechanism, configured such that when the lock assembly is arranged as in use, and the throw bolt is in the locking position, the buffer will space the throw bolt apart from a surface to which the bolt keeper is attached; and the biasing mechanism will bear on the bolt and bias it against the buffer.

Abstract: A method of installing a door-carriable portion (2), for a door stop (1), to be carried by a door. The door-carriable portion includes a magnet and a retaining member (7). The method includes drilling a hole in a bottom of the door; placing the magnet in the hole; and fastening the retaining member to the bottom of the door to at least partly span the opening to retain the magnet.

Abstract: The invention relates to the technical field of locks and discloses an actuator assembly of a combination lock. The actuator assembly includes a fixed motor, a drive shaft fixed to the axis of the motor, a cylindrical spring sheathed on the drive shaft and displaceable axially, a pin installed onto the drive shaft which may screw within two adjacent loops of the cylindrical spring, and a casing installed coaxially with the motor. The casing includes a cavity for accommodating the cylindrical spring, and a second sliding groove formed on the casing, and both ends of the cylindrical spring have a retaining ring extended outwardly from the outer periphery of the cylindrical spring and the retaining ring disposed at the second sliding groove for preventing the rotation of the cylindrical spring.

Abstract: A temporary door hardware system includes a latch assembly securable between a first side component and a second side component when the first and second side component are installed in the door. The latch assembly is dimensioned for integration with an opening in an door frame. The latch assembly includes first assembled position relative to the first and second side components. The latch assembly includes a second assembled position relative to the first and second side components. The latch assembly in the first assembled position extends from the first and second side components a greater distance than the latch assembly in the second position. Further disclosed is a door utilizing the latch assembly.

Abstract: A temporary door hardware system comprising a first side component configured to be exposed from a side of a door when the temporary door hardware system is installed in the door, a second side component attachable to the first side component and configured to be exposed from another side of the door when the temporary door hardware system is installed in the door, a latch assembly securable between the first and second side component when the components are installed in the door, wherein the latch assembly is dimensioned for integration with an opening in an door frame, wherein the latch assembly includes a spring bias configured to extend the latch assembly into the opening and retract the latch assembly from the opening, wherein the spring bias allows the latch assembly to retract from the opening when a threshold force is exerted on the door is provided.

Abstract: An external lock assembly for sliding doors or windows comprising a pair of reciprocatingly moving sliding bolt carriage handle members (8a, 8b) that move locking bolt members (7a, 7b) and a pair of associated guide blocks (18a, 18b) fixedly mounted onto the body (12) of the lock assembly. At least one of the guide blocks is provided with a recessed region (20) adapted to accomodate an immobilizer member (21) that maintains at least one corresponding locking bolt member at locked condition.

Abstract: The instant disclosure provides a push latch having a pivotally mounted blocking hammer including a head with a lever arm extending away from the head to a counter-weight. Under normal operating conditions, the hammer is held in an inert/balanced condition. Under such normal conditions, a portion of the hammer head may be in periodic contact with a resin of tacky character defining a bumper to aid in dampening vibration. Upon the occurrence of a high impact force, the rotational force provided by the counterweight is sufficient to cause the hammer to rotate into blocking relation relative to the latching mechanism so as to prevent unlatching. In the rotated condition, the counterweight may be in contact with an optional resin of tacky character defining a bumper to reduce rebound action.

Abstract: A safety structure for a cover device includes a base assembly and a cover assembly. The base assembly has a concave portion. The cover assembly is hinged to the base assembly and may cover the base assembly. The cover assembly has a cover body and a projection, which may elastically protrude out of and retract into the cover body, and may be fit into the concave portion for positioning. The projection is configured such that it may retract into the cover body to prevent an object from being hurt when the cover assembly is placed down and touches the object.

Abstract: A window assembly includes a pane defining a plane, and a latch bolt housing mounted to the pane. A latch bolt is slidingly mounted to the latch bolt housing for movement in a plane substantially parallel to the plane of the pane between a first position and a second position. A biasing member is operative to urge the latch bolt toward the first position, and a release handle remote from the latch bolt is operative to move the latch bolt from the first position toward the second position against a biasing force of the biasing member.

Abstract: A door lock mechanism for a pair of doors oppositely hung on the frame of a cabinet. The door lock mechanism comprises a pair of studs, one to be attached respectively to each door, a lock body to be attached to the frame, and a latch assembly carried on the lock body and provided by a pair of latch members and a spring urging the latch members to their latching positions. Each of the studs has a camming head at its free end which cooperates with a portion of the lock body to guide the stud into a cavity provided in the lock body as the respective door is closed. Each stud is also provided with a recess adapted to receive a detent end portion of one of the latch members to releasably retain the respective door in its closed position.

Abstract: An improved lockable windowgate having manually operated latching menas for retaining a locking member in retracted condition against the force of gravity during the time period in which the gate is opened, so as to facilitate one-handed operation by a user. Several embodiments are disclosed. In a preferred embodiment, the latching member is in the form of a detent disengaged by downward pressure on the locking member.

Abstract: A door lock comprising a block having a slot into which a locking arm moves when the door is shut. A pivot arm is resiliently biassed to extend into the slot and, a separate locking element is resiliently biassed to slidably extend into the slot. While a rotatable element is resiliently biassed to rotate clockwise to bring a roller directly under the locking element, the pivot arm abuts the roller and is itself resiliently biassed to prevent the roller from reaching a position fully under the locking element. Entry of the locking arm into the slot depresses the pivot arm forcing the locking element downward to permit full entry of the locking arm into the slot. As the locking element descends, the roller is urged counter-clockwise and the locking element engages a channel in the locking arm. The depressed pivot arm will not abut the roller at this point thereby allowing it to reach a position fully under the locking element which locks the locking element in the locking arm channel.

Abstract: A deadlock includes a casing, a front knob and a rear knob respectively rotatably formed on the front and rear walls of the casing, and a slidable latch reciprocatively mounted in the casing as driven by either the front or rear knob, wherein the latch is formed a triangular locking tongue having two inclined surfaces so that the latch can be conveniently used in a bi-directional door when opening the door either outwards or inwards.

Abstract: A locking device for a detachable panel fitted in a roof opening of automobiles comprises a pivotable lever mounted to the panel, a stationary body fixed to the vehicle roof, and a link mechanism securely fixed to the lever while pivoted to the stationary body. The link mechanism includes a pair of links each provided with a recess while the stationary body includes a pair of arms each provided with a pin resiliently urged to fit in the recess to lock the position of the panel at the partially open state. The recess includes two lateral edges one of which extends higher than the other other to act as the stopper of the pin, to thereby limit excessive rotational movement of the panel with respect to the stationary body.

Abstract: A fastening device for a cupboard door, which includes a catch member that is slidable within a carriage, the catch member and the carriage being biassed outwardly by means of springs. A restraining member is displaceable into and out of engagement with the carriage to restrain displacement thereof, and has a projection for restraining it in engagement with the carriage. Both the restraining member and the projection are externally operable. The fastening device also includes a locking means having a bolt slidable in a housing which defines a blocking pin, a tumbler plate having an annular recess and a auxiliary plate having an H-shaped aperture, in which recess and aperture the pin is received. The plates engage the bolt and prevent displacement thereof unless the plates themselves are displaced relative to the pin.

Abstract: Shearing motion between first and second parts of an electromagnetic lock for maintaining a door shut are translated into a force tending to lift the second part away from the first part of the energized lock, and the shearing motion is countered by countering the latter force with the magnetic attraction between the first and second parts of the energized electromagnetic lock. The mechanical friction between the mutually attracted first and second lock parts is added to the full holding force between these parts, so that the holding power of the lock considerably exceeds the holding power generated by the magnetic field between the first and second parts alone.

Abstract: In a container pedestal (10) a supplemental lock (42) is movable to a weighted position tending to maintain the spring (34) biased pedestal latch (22) from pivoting into a position to allow entry or exit of containers (C) from the pedestal.

Abstract: An improved utility cabinet for dentists is disclosed. The top of the cabinet is movable to a closed position and a functional position, and an adjustable, spring-urged bolt is engageable with different escutcheon plates to latch the top in each position. A waste receptacle is attachable to the side of the cabinet by a hook and teazle material for simplicity in releasably attaching the receptacle to the cabinet. An optional arm rest is arranged so bracket arms spring inwardly against collars to retard pivotal motion of the arm rest.

Abstract: In a hinge latch mechanism for a cabinet door of the type including a strike and a keeper assembly mounted on a pair of door hinge parts and cooperating to releasably retain the door in closed position, the improvement featuring a novel keeper assembly and mode of mounting same on its associated hinge part.

Abstract: A bolt assembly for use with interior door latches or locks embodying a movable latch bolt and a relatively movable strike engaging latching element normally activated with the bolt to engage and disengage a jamb mounted strike in response to actuation of manual operator means having associated locking means operable to prevent operator actuation of the bolt and latching element for purposes of locking the door. In such locked state, emergency opening of the door may be accomplished with the assembly of this invention by imposing appropriate force on the latching element to effect strike disengaging movement thereof relative to the bolt.

Abstract: A door of a household refrigerator has a cam cooperating with a striker. The cam is biased into forcible contact with the striker and is of a configuration for urging the door toward the closed position in response to contacting of a first cam portion and the striker.

Abstract: A detent mechanism for a reciprocably mounted valve spool includes a plunger mounted in a housing surrounding an end of said spool and including guide means for the plunger at its forward end and its rearward end to provide guide support of the plunger as it is biased into engagement with detent grooves formed on the valve spool. The detent assembly includes an assembly of parts including biasing means and guide means retained in their operative relationship with the plunger for ready insertion or removal from the housing.