Abstract: A wall panelling system comprising two upright posts 13, a panel 11, a hinge 19 connecting the panel to one of the posts 13 and a lock 21 for locking the panel to another post. The posts 13 have a cross-sectional shape which provides features for the attachment of the hinge 19 and the locking means 21. The locking means comprises a latch member 23 pivotally mounted with respect to its post 13 and a catch 22 fixed relative to the panel 11. The latch member 23 is movable by means of a pinion 28 which meshes with teeth 27 on the latch member 23.

Abstract: A refrigerator includes a body forming a refrigeration compartment (for cooling or freezing). The compartment has an access opening closed by a pair of side-by-side doors that are hinged adjacent opposite vertical edges of the opening. Each door includes a frame and a slide mounted in a free edge of the slide for horizontal sliding movement. When the doors are being closed, the slides engage displacement surfaces on the body which pull the slides partially out of the frame so that resilient packing members carried by the slides are moved into contact with one another to create an air seal along a vertical interface between the two doors. A magnet on the body attracts metal plates carried by the slides to hold the doors closed. Keeper members can be mounted on the body for yieldably engaging grooves formed in the slides for aiding in holding the doors closed.

Abstract: An equipment cabinet employs a rack-mountable equipment enclosure surrounded by a base, a cap, and front and rear covers. Each cover consists of a bezel and a door reversibly mounted thereon via removable hinge pins. The bezels have sidewalls that rest against ledges on the edges of the enclosure to receive support therefrom. The door has a centrally-located latch, the latch having a pawl with an eccentric catch portion that engages a latch opening on a ledge extending from the bezel. The pawl also has a tab that rests between the ends of an arcuate raised portion on the rear of the door to limit the rotational travel of the pawl.

Abstract: A pet door apparatus that allows an animal to enter and exit an enclosure. The pet door includes a frame element defining an opening in the enclosure that has a top frame portion, and a flap element that closes the opening. The flap element has a top portion and extends, in a first orientation, substantially vertically downward from the top portion. The flap top portion includes a horizontally extending pivot element for pivotably moving the flap in response to an applied horizontal force. The flap top portion includes a camming element that vertically moves the top frame portion relative to the frame top portion during pivotal movement of the flap away from the generally vertical position. The opening defined by the frame element has a wider top that tapers to a narrower bottom. The flap is correspondingly tapered to seat within the frame element.

Abstract: An improved latch guarded door lock and frame system is provided. A recessed surface is provided in a hollow metal frame, and is dimensioned to accommodate a latch guard so that the external surfaces of the door, frame and latch guard are flush. The recessed surface of the frame behind the latch guard is further reinforced by employing a thicker wall than is used in the rest of the frame, and by welding a square metal tube into the recessed region. A medial metal support is also welded into the lock box cavity in order to prevent the lock box from collapsing under stress. The resulting door lock and frame system is less penetrable than prior systems, and provides greater security because the latch guard is less vulnerable to prying and because the frame and lock box are reinforced, thus less likely to collapse under stress.

Abstract: A fixing device for an actuator to control the opening and closing of a leaf of a door or a gate has a hinged support assembly that includes a part fixed to the pillar and freely hinged at a first location to one end of the actuator, an elongated body hinged at a first end to the part fixed to the pillar and offset from the hinge of the actuator, and hingedly coupled at its other end to the distal end of the actuator, and an arm articulated at a first end to the leaf and hingedly coupled at its other end to the elongated body opposite the part fixed to the pillar. The actuator, the elongated body and the arm are substantially aligned with each other and angularly aligned with the leaf to form a triangulation in the closed position for providing angular locking of the leaf in the closed position. A hinged part of the elongated body taking the arm for coupling to the leaf is equipped with an arrangement for providing temporary locking of the leaf in an open position.

Abstract: An improvement for a standard hospital bed having a guard rail which provides for gap space, such improvement being a closure mounted on the bed rail at a gap and movable between a first position maintaining the gap and a second position closing the gap to prevent patient movement through such gap.

Abstract: A motor-vehicle latch mounted on a door has a front end pivoted about an upright axis, a rear end with a rearwardly directed end face, and an inside face immediately adjacent the rear end face, the door being movable relative to a frame member having a forwardly directed front face confronting the rear end face of the door in a fully closed position of the door. A holding element fixed to the front face of the frame member has a part projecting inward past the inside face of the door in the fully closed position of the door and having a support face facing forward toward the rear end face of the door. A retaining member, for example a bolt or wedge, is fixed in the holding element and a retaining element on the rear end face of the door is engageable with the retaining member to latch the door in the fully closed position.

Abstract: A door holder/stop for attachment between a door and a door frame has an elongate first and second arms attached with one end of the first arm overlapping a portion of the second arm to provide a single adjustable length arm. To join the ends of the first and second arms to each other in overlapping relationship, one of the elongate arms has a transverse hole near the second end thereof and a longitudinal slot extending through a portion of the length with one end of the slot positioned a short distance from the transverse hole. The other of the elongate arms has a plurality of threaded holes spaced along the length thereof. A first threaded screw is passed through the transverse hole of the one arm and into one of the threaded holes of the other arm, and a second threaded screw is passed through the slot of the one arm and into a second threaded hole in the other arm.

Abstract: A demountable door securing device includes a door edge engaging plate with a right angled bend adapted to rest against one face of the door and an extended portion terminating in a hinge on the opposite side of the door. A rotating door engaging member including a planar portion and a right angled portion can be rotated to engage a face of the door. A security bar through apertured tabs in the extended portion prevents rotation of the planar portion. The right angled bend includes an extended bar portion parallel to the door face at the free end of which a hasp is pivotally mounted. The hasp rotates into engagement with the door frame and is held in place by a securing bar extending outward from the right angled bend. A tongue on the free end of the securing bar fits through an aperture in the hasp and holes in the tongue can receive a locking device.

Abstract: A door forming a part of a closure assembly is attached to the frame of the closure assembly by engaging bifurcated branches of a pivot arm with a pivot shaft. One of the branches is extended to engage a curved leaf spring which is deformed as the door and the extension is pivoted about the shaft. The deformation of the spring is instrumental in exerting a force on the extension to detent the door in the closed position and the extension may disengage from the spring surface when in the open position. To further stabilize the door, a stabilizer is formed on the back of the door and it engages the end of a recessed channel in the assembly, at a point coincident with the pivot axis of the door.

Abstract: A swinging arm hold (8), designed to be attached between a window case (1) and a window frame (6) and comprising a basic bar (12), attached to the case, and an upper arm (11) and a lower arm (13), projecting from the ends of the basic bar, which two arms are rotatably attached to the uppermost part of an outer bar (9), which carries the frame. About the hinge between the basic bar and the upper arm a lock (18) having a lock recess (21) is mounted, rotatable in a limited way and designed to interact with a holding element (22), which projects from the lower arm.

Abstract: An electrically operated locking system for doors and the like has an electrically operated locking device installed inside the door. A control device installed outside the door is operatively connected with the locking device. A sensor detects the position of the door with respect to the door mounting by a light activated means electrically coupled to the locking device such that when darkness is sensed, the locking device is activatable to operate the locking unit. When light is sensed, however, the locking device is nonactivatable.

Abstract: Hinge and latching structures associated with a door for a pressure vessel provides a tight and competent seal when the door is in sealed relationship with the opening of the vessel. The latching structure includes coupling structures which provide increased clamping engagement of the door in response to any increased pressure differential developed across the door.

Abstract: A mounting panel of stamped steel has the door hardware such as the window regulator and door handles fixedly mounted thereon to facilitate preassembly and shipping. The mounting panel is subsequently mounted on the vehicle door. A door latch is provided for latching the door in the closed position and a retainer means is provided acting between the mounting panel and the door latch to loosely connect the door latch to the mounting panel for convenience of preassembly and shipping. The retainer means is a molded plastic retainer having integral projections which are force fit into plurality of openings provided in a door latch. The retainer means also has an integral headed prong structure which is loosely retained within an opening in the mounting panel with the aperture being oversized with respect to the headed prong to thereby permit adjusting movement of the door latch relative to the mounting panel.

Abstract: A tailgate handle assembly in a housing including a flush-mounted handle and an adjacent key cylinder. The housing is spaced apart from a tailgate latch mechanism. A laterally extending lever is slidably actuated on the housing from a locked mode to an unlocked mode manually by rotation of the key cylinder, or electrically via a power actuator, and then pivoted by manual lift-pulling on the handle, to thereby lift a latch rod extending between the lever and the latch mechanism to actuate the latter. An electrical limit switch is mounted on the handle assembly, adapted to being actuated by one slidable movement of the lever to unlock the latch of an upwardly pivotable tailgate window.

Abstract: A portable security grill apparatus which may be installed in window openings of buildings includes two rectangular grill sections longitudinally telescopically fastened to one another. Opposite longitudinal ends of the two grill sections have beams disposed perpendicularly to the axis of longitudinal telescoping movability of the two grill sections, the beams having flat outer surfaces adapted to abut a window edge at one end of the grill apparatus, and a window frame edge, at the other end of the apparatus. At least one toggle clamp Connected between telescopically joined members of the two grill sections is capable of exerting a large outward extension force when in a closed, clamped position, thereby exerting compressive forces on the window and window frame sufficient to prevent the grill apparatus from being removed from the window opening.

Abstract: The invention is a shock mount for a pivoted door on mobile food service equipment or a rolling cart. The shock mount is preferably a sliding block which is spring biased to a normal position. In case of a shock or jolt, the block slides to dissipate the energy resulting from the shock or jolt. A door is pivotally mounted on the sliding block. Detents hold the door in either a closed position or a supported open position. The pivot mount enables the door to move over the detent, while holding the door in either a closed or a supported open position.

Abstract: An improved latching configuration for a side swing door includes a cabinet enclosure with at least one side wall. An opening is formed in the side wall to provide access to an interior of the cabinet. A door is pivotably attached to the side wall to selectively open and close the opening upon a pivoting movement of the door. A latch assembly is provided on the door and/or the side wall for securing the door to the side wall in a closed position. The latch assembly is positioned between a location of attachment of the door to the side wall and a free edge of the door opposite the attachment location, preferably midway between those points.

Abstract: A hatch for a boat or other application is provided. The hatch includes a frame for mounting in an opening in a panel and a hatch cover pivotally mounted thereto. The cover includes a hinge pin that pivotally engages a hinge receptable mounted on the frame. A handle is slidably mounted in the hatch cover and includes a latch that releasably engages the frame when the hatch is in a closed and latched position.

Abstract: An apparatus for opening and closing a top bin lid from below such that, when in the fully opened position, the lid will not extend above the plane of the opening. The apparatus utilizes an elongated lever arm pivotally mounted on the pivot axis of the bin lid. A flexible linkage, such as a chain extends from below, over the lever arm and is connected to a gravity biased latch system which holds the lid in the closed position until the chain is pulled from below. After the latch is released, further drawing of the chain will pivot the lid and arm about their common pivot axis until the arm is obstructed from further movement by the bin. Continued pulling of the chain will draw the lid toward the lever arm against spring pressure until the lid has been pivoted approximately 180.degree. from its closed position.

Abstract: A security door assembly comprising a panel having inner and outer faces, a shallow peripherally extending sidewall having an inwardly turned rim, extending substantially parallel to the inner and outer faces of the panel, mounting means, comprising at least two first mounting members, and at least two second mounting members, the first and second mounting members being interconnected e.g.

Abstract: An access door assembly for a pressurized windbox, comprising a door frame having an opening with a post extending from the door frame. A door is pivotally mounted to the frame at a hinge. A latch is pivotally mounted to the door and includes a hook which engages the post for locking the door to the frame. The latch also includes a catch member extending beyond the hook for catching the post when the latch is moved to unlock the door. This stops the door in an intermediate partly open position allowing gusts of air to blow through the opening thereby giving the operator a warning and indication that the windbox is in fact under pressure. In this manner, an operator has sufficient time to step out of the way before moving the latch further, thereby fully disengaging the latch from the post and allowing the door to open fully.

Abstract: A swing away manway assembly for a tubular fluid conveying system having a manway opening in a first horizontal plane, the assembly including a cover disposed in a second parallel horizontal plane. The manway cover includes a circumferential sealing means for continuous sealing of the manway opening. The cover is provided with latch means for alternatively engaging and releasing the sealing means. Swing away means is secured to the cover in a plane perpendicular to the first and second horizontal planes of the cover and opening. The swing away means is adapted to facilitate swinging movement of the cover in a horizontal plane upon release of the sealing means. The swing away means includes biasing means for cooperation with the latch means in urging sealing engagement of the cover with the opening, and cam means for limited vertical movement of the cover during horizontal rotation thereof.

Abstract: A door system for use in a mine stopping comprises a door frame for installation in the stopping to define a doorway, a door hinged to a first side of the door frame for swinging between an open position and a closed position in which the door closes the doorway, and a latch for latching the door in its closed position. The latch comprises a strike which is secured to a second side of the door frame generally opposite the first side and which has a strike plate portion disposed in the doorway in a plane generally perpendicular to the plane of the doorway and spaced from the second side of the door frame thereby to create a void between the strike plate portion and the second side of the doorway. The strike plate portion has a latching aperture therein.

Abstract: A parking barrier apparatus for restricting ingress into and egress from a parking space is disclosed. The parking barrier includes an elongate, substantially planar base member adapted to be secured onto the ground of a parking space. An elongate carrying cover of is pivotally connected to the base member and movable from a first, upright position into a second, prone position. The carrying cover includes a substantially U-configured channel portion that is inverted and covers a portion of the base member when the carrying cover is upright. A barrier member is secured to the elongate cover and extends outward therefrom. A lock mechanism is secured within the channel of the carrying cover for engaging and locking the cover in the first, raised position. The lock mechanism remains substantially enclosed by the carrying cover and base member when the carrying cover is upright to prevent tampering with the lock mechanism.

Abstract: Combined vehicle vent and escape hatch having a frame bounding a roof opening, a cover hingedly connected to opposite sides of the frame by hinge brackets for limited venting movement relative to one or more of the sides, one of the brackets being separable into cover and frame parts and normally prevented from separating by a cammable release rod engaging the cover part and a frame-backed movable stop plate backing the rod, and an emergency button instanding from the cover and when pushed operative to project the cover from all of said sides to full venting position and separate the parts of the separable bracket for enabling the cover, as an escape hatch, to be swung about the opposite bracket to open position. For extending the service life of the combined vent and hatch, an inner panel of the cover is backed by a rigid metal backup plate on which, for relieving the panel of stress, are hung the operating parts attached to the cover.

Abstract: A closure assembly selectively closes an access opening for an enclosure having walls defining an interior space. The closure assembly includes a pair of hinges mounted to the one wall on opposite sides of the opening, the hinges having aligned apertures therethrough spaced outwardly from the one wall. A rectangular sheet metal door of a size larger than the opening is formed in a generally pyramid configuration having four creases, each extending from the centerpoint to one of the corners of the door. The centerpoint defines an apex of the pyramid configuration. Each side edge of the door between adjacent corners has a downward convex curve. The door is positioned in overlying relationship with the opening to completely cover the same with the apex disposed intermediate the hinges. A cam rod has a central, overcentered cam between opposite end rods rotatably and removably received in the hinge openings and a handle operatively associated with the cam.

Abstract: A casement window wherein the sash is pivotable in the frame about a vertical axis has a self-locking crank drive which pivots the sash between open and closed positions by way of a pivotable lever, a link which is coupled to the lever, and an actuator which is movably installed in the sash, which is coupled to the link and which forms part of a locking-unlocking mechanism for the sash. The first stage of rotation of the crank drive in order to pivot the sash from closed position involves a displacement of the actuator which ensures that the sash is unlocked, and further rotation of the crank drive results in pivoting of the sash to the open position. If the direction of rotation of the crank drive is reversed, the sash is moved to the closed position before the actuator is caused to lock the sash to the frame. A blocking device for the actuator is operated by the frame to release the actuator for movement to its operative position shortly before the sash reaches the closed position.

Abstract: A gate latch is provided for locking a hingeably mounted gate to a latch post. A gate latch is mounted to either the gate or post by a mounting means. The mounting means extends from a lock housing having a locking means disposed therein. Extending from the housing is an oarlock means. The oarlock means is pivotal between a first locked position and a second unlocked position. The locking means automatically locks the oarlock means in the first locked position when the oarlock pivots from the second position to the first position. Also provided is a key lock means normally biased to a locked position which may be used to unlock the oarlock from the first lock position and permit the pivotal movement of the oarlock between the first and second positions.

Abstract: A vehicle door comprising a door shell, a module, and door hardware components attached on the door module. The door shell comprises an outer belt reinforcement, an outer panel and an inner panel having a hinge and a latch member. The module comprises a core member having two metal plates thereby to receive the hardware components. The hardware components which are attached to the module are an exterior door release, an interior door release, a latch mechanism, a window regulator mechanism, and a trim panel. Thus, the module is adapted to permit pre-assembly and pre-testing of major sub-assemblies.

Abstract: An improved enclosure assembly of the type including an openable enclosure, a locking member movable relative to the enclosure for selectively locking or unlocking it, a keeper mechanism mounted on the enclosure for retaining the locking member in its locked position, and a manually operable lock for selectively locking the locking member in its locked position.An improved tamper-proof locking assembly is provided which greatly minimizes the danger of unwanted intrusion into the locked enclosure. A guard housing having a single opening is placed about the keeper mechanism. The single opening of the guard housing is made large enough for the insertion of a human hand therein when it is desired to unlock the manually operable lock, but is made too small for insertion of a cutting instrument that could cut apart either the locking member, the keeper mechanism, or the manually operable lock.

Abstract: A casement operator for a window has a deployment linkage connectable between the window frame and the base and operable to cause movement of the window sash. A gear drive drives the deployment linkage, which coacts with a sash lock and a lock linkage having a window-actuated trigger. A plurality of rigid links are in pivotal engagement with the deployment linkage and in driving engagement with the gear drive, and a tie rod is disposed intermediate the rigid links and the sash lock. A trip lever with a trigger extending beyond the window frame is pivotally secured to the base and engageable with the lock linkage for restricting the movement of said lock linkage during a non-locking mode of operation of the operator.

Abstract: An opening/closing device of a door for a refrigerator or the like will open/close the door member at a desired side, namely, at the right side or at the left side, without requiring a movable operating handle. The device is simple in contruction, has a high adiabatic efficiency, and can be easily incorporated in the door member. Therefore, no special mechanism is necessary in the door member and no structural change is required inside the door member.

Abstract: A security device for closing systems for vehicles and containers comprising a base plate fastened to the chassis of the vehicle holding a hinging shaft and one of two essential elements of a lock, i.e., the catch or sliding bolt; and a closing arm, one end of which hinges on the base plate by means of said shaft, the other end holding the other element of the lock. The plate and the arm form a parallelpipedal flat space when the device is in a closed position, which serves to house and lock the lower bent ends of the closing shaft of the vehicle door.

Abstract: A locking door threshold having an elongated vertical slot within the upper surface, an elongated striker bar received in the slot, the striker bar being vertically slidable within the slot between a lower position and an upper position in which the striker bar intercepts a door pivoted over the threshold, and a slide bar positioned within the slot and below the striker bar, the slide bar being horizontally slidable between a first and second position, the surfaces of the slide bar and the locking bar interrelating so that when the slide bar is in one position the locking bar is elevated to prevent opening of the door and when in the second position the locking bar is vertically lowered in the threshold slot to permit the door to be opened. A locking lever extending from the threshold and connected to the slide bar is used to control the position of the slide bar.

Abstract: A burglar bar assembly for establishing a security barrier across a door or window opening composed of a plurality of horizontal cross bars held in vertically spaced relation by intervening and transversely related vertical members. Certain of the vertical members are fixed rigidly to certain of the cross bars, but slidably joined to others in a manner to provide for extension and retraction adjustment of the barrier to accomodate variations in door or window dimensions. The bar assembly is hingedly connected at one end to a window or door frame to provide for swinging opening and closing operation of the barrier. A safety latch is mounted adjacent one end of the bar assembly and comprises a spring loaded cam member pivotally moveable against spring bias by a remotely operated cable. The cam member serves to capture and lock the unhinged end of the barrier to a rigid locking channel secured to the window or door frame; such channel having spaced angulated slots receptive of the cross bars.

Abstract: Described is a full-turn type working machine which generally consists of a lower travelling body and an upper rotary body. The upper rotary body includes a machine room, an operator's cabin, a fuel tank and a counterweight which are laid out within a circle of a predetermined rotational radius R. In addition, a door which is fitted in a side panel of the operator's cabin can be opened largely rearward through an angle greater than 180 degrees and received within the circle of the predetermined rotational angle in an opened state.

Abstract: A pet door comprises a frame defining an aperture in which a flap is pivotally suspended so as to close the aperture when it hangs vertically. A pet such as a cat can push the flap either way to pass through the aperture when entering or leaving a house. Entry is controlled by a solenoid-operated catch which is energized when a magnet carried on a cat's collar enters the common detection zone of an array of reed switches disposed at the distal end of an extension of the bottom of the frame in spaced relation to the plane of the aperture.

Abstract: Described is a full-turn working machine which generally consists of a lower travelling body and an upper rotary body. The upper rotary body includes a machine room, an operator's cabin, a fuel tank and a counterweight which are laid out within a circle of a predetermined rotational radius R. In addition, a door which is fitted in a side panel of the operator's cabin can be opened largely rearward through an angle greater than 180 degrees and received within the circle of the predetermined rotational angle in an opened state.

Abstract: A slide latch for latching the leading edge of a door, formed of a plastic panel, to an adjacent jamb-like member, is formed of a narrow, thin, horizontally elongated, flat plate positioned upon the door surface for sliding movement towards and away from the jamb-like member. Integral, narrow, rigid flanges, forming sled-like runners, are formed along the horizontally elongated side edges of the slider for slidable engagement with the panel surface. The slider is held within an open-ended, horizontally elongated, flattened loop that is struck-out of the panel. Stops are formed near the opposite ends of the slider for engaging the ends of the loops and thereby limiting the sliding movement of the slider. One of the stops may be enlarged to form a manual grip for moving the slider.

Abstract: A safety gate which is adapted to be mounted on the sidewalls at the top or bottom of a stairway to prevent unwanted access thereto by a toddler or on the sidewalls of a door frame or other structure to prevent unwanted passage therethrough from either direction by a toddler includes a mounting rail which is adapted to be fixedly attached to one of the sidewalls, a locking post which is adapted to be fixedly attached to the other sidewall opposite to the mounting rail and a gate frame assembly which is adapted to be removably and pivotally mounted to one end to the mounting rail and secured at the other end, when desired, to the locking post. When the gate frame assembly is mounted on the mounting rail, the gate frame can be pivoted back and forth like a swinging door when restricted passage is not desired and then locked to the locking post when restricted passage is desired.

Abstract: A high security window is presented with a bullet resistant window pane on the exterior, an optional standard window pane on the interior, and an explosion resistant screen centrally located between the panes. The screen is electrically charged to prevent intruders from entering through the window. The window effectively protects against terrorists attacks, yet has pleasing aesthetics. The window can be opened and closed for both safety and security.

Abstract: A latch element 13 is mounted on sash 12 on a window and comprises an elongate block having a wedge shape nose 15 and the other part of the latch mechanism 16 comprises a latch member 17 which can be moved rectilinearly by operating handle 19 mounted on the outside of the frame 10 and which has a tongue 20 to engage member 17. The wedge shape nose 21 engages the nose 15 in the locking position.

Abstract: A combination lock for a panel and a frame is provided. The panel and the frame are such that the panel can move relative to the frame and the combination lock is such that it can lock the panel relative to the frame. The panel has an arm member extending therefrom and the lock releasably prevents the arm member from moving so as to inhibit opening of the panel. In one embodiment the panel can be a swing-out type window. In another embodiment it can be a sliding panel such as a glass door or window.

Abstract: A device for operating a gate includes a pushbar which is located on each side of the gate and which is attached by cable to a spring-loaded bolt from a latch on the gate post. Each pushbar includes a sleeve mounted for free rotation relative thereto. The latch means is located adjacent the bottom of the gate so as to minimize the possibility of animals inserting their heads under the latch and opening the gate.

Abstract: This device for controlling the leaf (5) of a door or window opening to the outside comprises a casing (6) secured to the inner face of the sill (4) of the dormant frame (3) and adapted to house a crank-actuated mechanism for controlling the rotation of an operating arm (7) provided at its end with a roller (13) engaging a guide rail (15) secured to the leaf (5). Protection means (19) are provided for preventing the access to the operating arm (7), notably at the beginning and at the end of the opening and closing movements of the leaf. Locking means (42) are also provided for locking the leaf (5) in any angular position thereof with respect to the dormant frame (3).

Abstract: The invention relates to a means for locking an awning/vent type window wherein pear-shaped apertures are provided on the window frame that cooperate with pin means projecting from the vent. As the vent is drawn into a closed position, the pin means enters an enlarged portion of the pear shaped aperture and subsequent relative movement between the pin means and the pear shaped aperture brings about engagement of the pin means with the smallest portion of the pear shaped apertures.

Abstract: A latch device for a hinged door including a resiliently flexible latch bar secured to the door and having a free portion extending along the inside of the door to an end portion, near the door edge, which engages a catch by means of the bending and straightening of the latch bar. Preferred embodiments include a stop bar similar to the latch bar, but extending beyond the opposite door edge to engage another catch to hold the door open. The latch and stop bars are preferably a single bar with two free portions at its opposite ends. The catches have bearing surfaces which distort the bar as the door swings to prepare it to snap into locking engagement with the catches. Access to the latch bar, to allow unlatching, is provided through the door.

Abstract: A casement operator for a window has a deployment linkage connectable between the window frame and the base and operable to cause movement of the window sash. A gear drive drives the deployment linkage, which coacts with a sash lock and a lock linkage having a window-actuated trigger. A plurality of rigid links are in pivotal engagement with the deployment linkage and in driving engagement with the gear drive, and a tie rod is disposed intermediate the rigid links and the sash lock. A trip lever with a trigger extending beyond the window frame is pivotally secured to the base and engageable with the lock linkage for restricting the movement of said lock linkage during a non-locking mode of operation of the operator.