Abstract: A storm cover for protecting a building's exterior glass includes a resiliently rigid protective storm panel connected directly to the glass so as to substantially cover the glass surface. The protective storm panel is connected to the glass by shock absorbing connectors positioned to hold the panel on the glass and spaced apart therefrom, to substantially protect the glass from impact by distributing the force of an impact. The protective storm panel is made of a substantially resiliently rigid material such as wood, plastic, or light gauge metal, and the exterior glass is preferably a glass window or glass door. The protective storm panel may be sized so as to overlap a frame surrounding the window or door to thereby provide added protection.

Abstract: There is described a profiled sash section for a window sash holding a window pane and intended for being installed in an outer frame of a blast resistant window. The sash section includes a main member enabling inter-engagement between the profiled sash member and the outer frame a window pane holding member for accommodating and securing an end portion of said window pane in the profiled sash member, and a reinforcing member designed to support the end portion of the window pane and to transmit blast pressure, if incidentally applied to the window pane, to the main member. For at least partially absorbing blast pressure energy applied to the window pane, the sash section is provided with damping means for deforming up to predetermined limit. Also described is a blast-resistant framework for a casement window, including the window sash assembled from the mentioned profiled sash sections and adapted for rigidly and air-tightly securing the window pane in the holders of the profiled sash members.

Abstract: A system for mounting a solar screen to an awning window of an enclosure is provided that allows the awning window to be opened and closed with the solar screen mounted on the exterior of the awning window.

Abstract: A reinforced storm shutter for protecting doors and windows of buildings from high winds of severe storms and hurricanes. The shutter is comprised of heavy-gauge components, including tubular members having a plurality of aligned, slotted openings and louvers mounted in the aligned openings. The louvers are welded to the tubular members, preferably on the inside surface of the tube, with the weld completely sealing each slotted opening. The tubular members are then welded around the entire periphery of the tube ends to the remaining frame members of the shutter to hermetically seal the tubular members and protect the welds securing the louvers from continuous weathering conditions. The tubular members are formed of mating channel members that are sealingly secured together after the louvers have been welded in place.

Abstract: A hurricane protection system comprises a rigid sheet in a rectangular configuration positioned within a window opening with an upper edge, a lower edge, and parallel side edges. A plurality of fixed retention mechanisms are secured to the sheet adjacent to the lower edge. Each fixed retention mechanism has a plate secured to the sheet and a downwardly extending finger with a lower end positioned in an associated hole and an upper end secured to the plate. A plurality of supplemental retention mechanisms are secured to the sheet adjacent to the upper and side edges. Each of the supplemental retention mechanisms include a J-shaped finger with a short leg and a long leg terminating in a free end reciprocal between a locked orientation within an associated hole and unlocked orientation out of, but aligned with, an associated hole. Each of the supplemental retention mechanisms include a bracket with a central face attached to the sheet.

Abstract: A device is provided for protecting a window or door during severe storms. A panel, cut to fit in a window frame, is held in place by the action of the locking assemblies described herein. A rubber gasket can be used along on e side of the panel in place of some of the locking assemblies. Different embodiments of the assembly are described for mounting along the sides of the panel. A “clip-on” assembly is also described.

Abstract: A rectangular window opening in a structure is provided with four channel members that provide a decorative frame around the opening. Three of the channel members are permanently fastened to the structure through a flange on the channel. The fourth channel member is removably fastened in place. When the opening must be covered by a storm panel, the fourth channel is unfastened and removed. A rigid rectangular panel is mounted in the three channels. The fourth channel is then mounted on the fourth edge of the panel and then the fourth channel is removably fastened to the structure. All of the elements except the panel remain in place. The panels have no holes or accessories. All panels are interchangeable for the same size window. No tools are needed to mount or remove a panel.

Abstract: There is described a profiled sash section for a window sash holding a window pane and intended for being installed in an outer frame of a blast resistant window. The sash section includes a main member enabling inter-engagement between the profiled sash member and the outer frame; a window pane holding member for accommodating and securing an end portion of said window pane in the profiled sash member, and a reinforcing member designed to support the end portion of the window pane and to transmit blast pressure, if incidentally applied to the window pane, to the main member. For at least partially absorbing blast pressure energy applied to the window pane, the sash section is provided with damping means for deforming up to a predetermined limit. Also described is a blast-resistant framework for a casement window, including the window sash assembled from the mentioned profiled sash sections and adapted for rigidly and air-tightly securing the window pane in the holders of the profiled sash members.

Abstract: A window assembly in which the frame of the window assembly provides support for both a window and a protective shield with such support comprising an inwardly facing saddle which supports the window within the frame and an inwardly facing casing and retainer adjacent the saddle which releasably retains the protective shield and the window within the frame with the shield extending over and protecting the window.

Abstract: The invention encompasses a storm shutter system. The system utilizes a track above an opening, a shutter that is held by the track that covers the opening, a retainer that in conjunction with the track acts to hold the shutter in place, a means for retaining the shutter once the shutter has been installed. The shutter system can be deployed from the inside and is therefore very useful in protecting windows above the ground floor. The storm shutter system is useable with various types of windows including stacked windows and horizontal sliding windows.

Abstract: An aesthetically-pleasing foldable, reusable security device and method for protecting double-hung windows from storm debris hazards and vandalism, wherein the perimeter edges of the device fit within the outermost groove of a double-hung window frame and can be easily installed and removed by one adult of ordinary strength and coordination standing behind the window. The device also protects the building against unauthorized entry and burglary, and is particularly useful for protecting upstairs windows since it requires no pre-installation steps or hardware, no professional installation, no tools, no ladder, and its installation does not permanently alter or damage the window or adjacent building surfaces. The device has at least two protective panels with two or more hinges attached between the front surfaces of adjacent panels which allow them to fold substantially parallel to one another in a compact configuration for storage, and unfold again into an essentially planar configuration for use.

Abstract: Window grill clips which can be used to removably attach window grills to windows. The window grill clip has a window frame segment and a grill segment extending from the window frame segment at an upward inclined angle. An opening is defined through the grill segment. A tang connected to the grill segment has a first leg extending away from the grill segment and a second leg extending from the first leg and back toward the opening in the grill segment. The grill segment may have a tab which extends downward from and end of the grill segment opposite an end of the grill segment connected to the window frame segment. Window frame engagement spikes may be provided on the window frame segment.

Abstract: An external screening mechanism for a pivotable skylight window comprises a web of a screening material which is wound on a spring-biased roller and is connected with a bottom bar which is guided in side guide rails and connected via a cord drive with an unrolling drive unit. The side guide rails for the bottom bar run along the parts of the frame side portions situated above the axis of rotation and the parts of the sash side portions situated below the axis of rotation, and an essentially rod-shaped support arrangement is attached to and extends across the screening web and is led in the side guide rails so that, in a position of use for the screening mechanism, it is positioned at or close to the axis of rotation in parallel therewith. The device may be provided with an arrangement for retightening and smoothing the web in the fully drawn position and during rewinding.

Abstract: One aspect of the present invention is directed to a screen door comprising a flexible screen and a rigid transparent protective cover disposed in at least partially overlapping relation with the flexible screen in order to protect the screen from damage. The cover is advantageously transparent in order to permit a person to see through both the screen and the cover. Furthermore, the cover is advantageously provided with a plurality of air holes.

Abstract: A mounting bracket and window shield assembly for protecting a window of the type found on a subway or bus includes a shield made of a flexible sheet of plastic. The shield is held in place by a mounting bracket which mounts directly to the existing window and window frame on the four sides of the window. The mounting bracket has a T-shaped cross section in which a first arm of the T forms a tab that is inserted between the existing window and window frame. The second arm of the T and the body of the T together form a seat upon which the window shield is placed. The window shield is held in place against the seat of the mounting bracket by a length of an elastomeric retaining seal. The retaining seal includes a bead which permits the retaining seal to be removably anchored to a channel formed by the body of the mounting bracket.

Abstract: A security closures are adapted to be secured over windows or other openings in a wall of a building. The security closures are fixed to the building in a manner to substantially prevent removal of the closure from the exterior of the building. On the other hand, the security closures provide ways to secure the security closures from the interior of the building while minimizing any obstruction to work being done inside the building.

Abstract: The present invention provides, in one embodiment, an awning that permits light and air to enter the structure to which the awning is attached, that can be utilized to protect against major storms, and that can pass strict building code standards testing. The awning includes a perimeter framework that is adapted to receive a removable rigid support plate. In an alternate embodiment, the invention provides a shutter that is inexpensive, easy and quick to manufacture, that can provide protection against major storms, and that can pass strict building code standards testing. The shutter includes modular louver sections that have an integral rigid backing plate.

Abstract: A pet door assembly having a frame and a security cover. The security cover has a main body with vertical edges and vertical flanges formed near each vertical edge. The frame includes vertically extending channel members for slidably receiving the vertical flanges of the security cover. Each channel member includes an integrally formed wall portion, a portion of which is located inwardly of the flange when the cover is disposed within the channel. The channel members and the vertical flanges engage in an interlocking fit to prevent the cover from horizontally extruding out of the channel, such as by a force applied substantially normal to the security cover, thus preventing the security cover from dislodging from the frame.

Abstract: A storm shutter installation includes a pair of supports attached above and below a window to be protected. The supports include a pair of parallel channels to receive a pair of plywood panels. One or more removable brace are provided to support the plywood panels. The braces typically run parallel to the short dimension of the panels thereby reducing the unsupported long dimension of the panels. The braces are clamped together, thereby clamping the panels together and clamping the panels to the supports. The resulting storm shutter installation is substantially stronger, perhaps as much as an order of magnitude, than single plywood panel installations.

Abstract: The invention relates to a flexible storm resistant system for installation in openings of a dwelling. The system consists of hinged support braces that are installed in the lateral walls of an opening. The braces have horizontally extending threaded bolts placed inwardly from their ends. The braces also have retainer pins at each of their ends to be received in bores of the lateral walls. A panel having a periphery larger than the opening is received onto the bolts of the braces and rigid splints having holes corresponding to the location of the bolts are received over the panel and over the bolts to sandwich the panel between the supporting braces and the splints. There are nuts at the ends of the threaded bolts to apply appropriate pressure to the above noted sandwich.

Abstract: To reduce undesirable scrap wastage in fabrication thereof, the rectangular metal frame section of a supply air register is formed from four separate side and end stampings having generally U-shaped cross sections along their lengths, and overlapping corner sections joined at both inner and outer peripheral portions of the frame structure to provide it with enhanced strength and rigidity. Side portions of the side and end stampings form in the frame structure an integral rectangular base section in which the flow rate adjustment damper blade and directional adjustment vane portions of the register are directly mounted to avoid the necessity of a separate support frame structure for these portions of the overall supply air register assembly.

Abstract: A track assembly for mounting storm panels on the outside of a house or a building to protectively cover windows includes an elongate, extruded rail having a rear surface, a front face, top and bottom edges, an elongate channel formed through the length of the rail between the rear surface and front face, and an elongate exposed slot extending along the front face and communicating with the channel. The channel is structured to receive an enlarged head portion of a bolt with the bolt stud extending outwardly through the slot for receipt through an aperture in the storm panel. A wing nut is fastened to the bolt stud to secure the storm panel against the track assembly.

Abstract: A removable light controlling blind assembly for a marine vessel or the like includes two generally circular superimposed panels. Each of those panels has a plurality of translucent horizontal strips printed thereon and a plurality of alternating light transmitting strips separating the translucent strips. The two panels are movable in a linear direction to bring the strips into registration with one another. A flexible gasket is also provided and includes a groove for positioning the blind assembly in a port or hatch in the vessel.

Abstract: Interior shields for protecting structure openings such as windows and doors are described. The shields which are to be positioned on the inside of a window include metal pane backing, metal reinforcement channel members, a metal flange frame, and sealing gasket material on the inside edges of the flange frame. The shields are held in place by compressive fasteners that include a metal cam type wheel with a flat side portion, an axial-hole off center and a side opening for an adjustment rod. A bolt can fit through the axial opening to hold the wheel against the side interior frame of a window. The bolt can be held in place by a concrete anchor and metal sleeve. Rotating the adjustment rod attaches and detaches the shield from the window. When attached, the gasket material forms a watertight seal between the shield and the window. For wooden frames a lag bolt can be substituted for the bolt. Materials for the shield and compressive fastener can include aluminum, stainless steel, galvanized steel or the like.

Abstract: A protective storm and security panel arrangement for either awning or sliding type windows or sliding doors. The arrangement for an awning window includes a set of elongate panels, each one being fitted to cover a louver of the awning window. The panels are formed with one turned-in edge to provide a channel for slidable insertion over one end of a window louver, and a second edge having an offset lip that may be seated over the louver. The awning window is closed such that the respective louvers overlap and anchor adjacent panels in place to form a protective shield over the window. When modified for sliding windows, the invention includes a panel and an overhead bracket for mounting one edge of the panel on the sliding window. The panel is formed with two offset halves which conform to the sliding halves of the window when mounted on the bracket, and the bottom half is formed with a turned-in hooked edge to anchor said panel in place when said window is closed thereon.

Abstract: An improved removable shade for a vehicle moonroof, sunroof or other window assembly. The shade includes a relatively rigid panel having a size and shape configured to cover the window, a retainer button permanently attached to the window having a releasable retainer element on the opposed side and a connector button attached to the shade panel having a mating releasable retainer element, and a handle is attached to the shade panel, preferably coaxially aligned with the connector and retainer buttons. The retainer elements preferably comprise a plurality of resilient, generally linear connector elements projecting from each of the buttons having transverse end connector portions providing a releasable connection between the buttons and the connector button is preferably permanently adhesively bonded to the window.

Abstract: A door hole cover for covering a hole in a door has two substantially flat cover plates that are secured to opposite sides of the door for covering the door hole. The first cover plate has an attachment tube extending from the center of its inner surface such that the attachment tube is positioned inside the door hole during assembly. A centering disk is placed over the attachment tube and held in place by a retainer clip. A fastener fits through a hole in the second cover plate and engages an internally threaded hole in the attachment tube to secure the first and second cover plates to the door in a position covering the door hole. The centering disk inside the door hole substantially prevents movement of the cover plates in a plane that is parallel with respect to the door. The centering plate may include three removable tabs that are left in place to cover relatively large door holes, but may be removed to cover smaller door holes.

Abstract: The invention includes an extruded retainer member which is permanently affixed to the casing of an existing window and which has a ridge running its length onto which is snapped the channel of an extruded frame member, Forming a weather-tight seal. The frame member has an additional slot for securing window glazing within the frame. The ridge on the retainer member has a neck, a bulb and a tip. The channel on the frame member is formed by two flanges which are flexible to an extent and shaped so as to snap over the bulb on the ridge. A gap between the ends of the flanges forming the channel and the neck on the ridge allows the frame member to pivot relative to the retainer member. Since the tip of the ridge on the retainer member will contact the inner surface of the channel in the frame member, the amount of pivoting is restricted.

Abstract: A window tinting apparatus is arranged for adjustment relative to a vehicular door adjacent an existing window of the associated vehicle. A tinted plate is arranged for sliding orientation adjacent and coextensive with a vehicular window plate to provide for selective tinting of an associated door window, with the translucent tinted plate mounted within the door below the window opening in adjacency to the existing window plate of the vehicular door.

Abstract: A second door part is provided which is detachably mounted at the outside surface of a first door part which is openable and closable in relation to an automobile body. The second door part is engaged with the first door part by a locking mechanism. By operating the locking mechanism, redressing of the door by selectively attaching different types of second door parts can be carried out. Additionally, maintenance of mechanisms within the door can be easily performed. When it is desired to provide a window glass which can be raised and lowered for the second door part, a window glass raising/lowering mechanism having a lever arm is mounted to the first door part and a window glass is mounted to the second door part, a glass holder is fixed to a lower end of the window glass and the lever arm and the glass holder are engaged with each other. When the second door part is attached to and detached from the first door part, the lever arm and the glass holder are also disengaged from one another.

Abstract: A covering device (10) of the type used to protect a window (12) from breakage and provide security is disclosed as including a barrier structure (28) including a barrier frame (30). The barrier structure (28) includes a plurality of reinforcing members (36) which are sandwiched between spaced apart inside and outside barrier panes (38). Barrier frame (30) includes an outwardly extending peripheral flange (32) which abuts with an inwardly extending peripheral flange (22) of a window frame (14) that mounts a window sash (16).

Abstract: A security door comprises an outer frame for closing off a doorway and door hinge means connected to the outer frame for hingedly mounting the outer frame in the doorway. An opening is provided through the outer frame and a plurality of security bars are mounted on the outer frame and extend across the opening. A closure member for closing off the opening is provided, closure member hinge means being connected to the closure member whereby the closure member is pivotally mounted on the outer frame. An insert is provided by the closure member, which insert projects into the opening in the outer frame and occupies said opening when the closure member is in its closed condition, the insert having a plurality of recesses in the form of elongate grooves for respectively receiving the security bars when the closure member is in its closed condition with the bars at least partially enclosed and concealed therein.

Abstract: A sun filter for a glass louver panel is disclosed which filters out the heat, glare and the ultraviolet rays which normally penetrate through the glass. The sun filter is formed of a resilient, plastic material such that it may be easily snapped over the existing louver panel without dismantling the panel from its support structure or in any way interfering with the normal operation of the louver panel. The filter has a resilient filter panel which bears against a face of the louver panel and frictional attaching legs which frictionally engage opposite edges of the louver panel to removably affix the sun filter to the panel.

Abstract: An interlocking door guard securely covers and is attached to the outside of doors that open inward. It uses a full length pendulum torsion rod assembly on the hinge side of the door as well as guides in connection therewith and matching receptacles in and/or on both vertical casing members to accommodate mating sections of door guard. The forward section has an open area adequate to access door locks. This area is further protected by adjustable guard bars. Hinge lever assemblies attached to the door and guard in the forward area cause it to shift and interlock and disengage both vertical casing members when encountering stop plates on forward casing receptacles.

Abstract: A plurality of concealed attachment clips are used for securing a grill to a window or door frame. The attachment clips are generally of L-shaped configuration, including a flat body portion having a pointed end, which is forcibly urged between the window or door frame and inner surface of the window or door pane. A coupling portion extends at substantially right angular relation from the body portion and includes a dome-shaped detente. The grill is comprised of grill bars, and each grill bar has a semi-spherical recess therein. The ends of the grill bars are forced over the detentes of the clips to releasably secure the grill to the window or door frame.

Abstract: A locking and sealing assembly locks two window sashes to each other so that they can pivotally move together relative to a casing. The assembly locks the interior sash to the casing while disengaging the lock between the two sashes, so that the interior sash urges sealing material on it to press sealing material on the exterior sash against the casing to provide a weather seal. In a preferred embodiment, the assembly has a lock shaft with a pair of radial lugs. Catches each having a curved surface flange are mounted to the exterior sash and to the casing, and have lengths at least thrice the lug width. The shaft can be moved so that a shaft lug engages the exterior sash to hold the two sashes together. When the two sashes are moved to within the casing, the lock is moved to disengage the lug while simultaneously moving another lug to lock the interior sash to the casing.

Abstract: A latch assembly for recreational vehicle doors in which a closure door and a screen door are hinged about common axes includes a latch bolt which is adapted for mounting on a vertical stile of the screen door and is movable into engagement with a keeper plate. A latch bolt retainer is mounted on an inside surface of the prime closure door. The latch bolt retainer has portions which cooperate with the latch bolt on the screen door such that when the prime closure door is closed against the screen door, the retainer captures the latch bolt on the screen door and retracts it from the keeper and retains the latch bolt in a retracted position. The capturing movement is accompanied by alignment movement of the screen door latch bolt with respect to the retainer so that the screen door is held in a predetermined aligned position in the retainer.

Abstract: Improved framed panel assemblies are disclosed, especially as adapted for use as windows to be installed over existing windows, especially to improve the capability of the window to provide insulation from the outside air. Various embodiments have reinforcing means for the assembly components, improvements in the joining of the elements of the assemblage, and a strip.

Abstract: A metal door frame for mounting onto an existing wood door frame of a building comprises side and top members that are to be secured onto respective side and top sections of the existing door frame. A threshold member is mounted onto or into the bottoms of the side members of the outer door frame, the threshold member being adjustable relative to the side members enabling the threshold member to engage and extend along the threshold of the existing frame regardless of the position of the existing threshold.

Abstract: The invention is a removable translucent and shatter resistant storm shutter removably secured within upper and lower brackets mounted on a window frame. The lower bracket is adaptable to window sills of varying angles due to an adjustable lower angle member.

Abstract: A unitary removable storm window assembly contains a window pane, a perimeter frame, and at least one side channel. The storm window assembly is unitary in that the side channel is interlockable with the perimeter frame so that the various components are fixed in relationship to one another even when the window is not in use, that is not installed. The storm window assembly contains at least one spring for urging the side channel away from the window perimeter. Thus, when placed within the jambs of an existing building or home window opening, the unitary window assembly is frictionally retained therein by the channels. The engagement is thus free from securing guides, tracks, and the like, and the entire window assembly is readily removable as a unitary structure within a matter of seconds.

Abstract: A sun screen is provided for mounting inside of an automotive vehicle adjacent to the inner surface of a hatchback rear window thereof. The sun screen is formed of a support having longitudinal rails with upper and lower transverse bars secured to the rail extremities. The rails have longitudinally aligned transverse openings therethrough and a plurality of mutually parallel louvers are mounted on the longitudinal rails and pass through the openings therethrough for orientation in a horizontal disposition. Mounting hinges rotatably connect the support to the inner window frame for rotation about an axis proximate to and parallel to the upper transverse edge of the window frame. Mounting brackets proximate the lower edge of the window frame are formed as angles and include transverse legs which extend inwardly a short distance toward each other.

Abstract: The disclosure relates to opening window, door or the like comprising a frame (1, 2), a casement (3, 4) and an exteriorly disposed protective cladding (7).The invention is designed to offer such a simple solution to the suspension of the casement and the mounting of the protective cladding as also permits that the casement may be pivoted so that its outside will be interiorly accessible.The window has at least one portion of the protective cladding (7) designed as a retainer unit which is pivotal and is fixedly retained in the frame (1, 2) by means of hinges (9). The casement (3, 4) is connected to the retaining unit by means of second hinges (10).

Abstract: An improved window frame system for slidably retaining sashes in self-storing windows. The frame system comprises four channel members disposed about an opening, having tracks for receiving sashes. A plurality of filler strips are removably positioned in the tracks. The sashes are engaged in the tracks by the filler strips. By removing segments of the filler strips the sashes can be removed from the windows.

Abstract: A solid door for a dwelling, the door combining the features of security, ventilation and insect protection.The door has an aperture covered by a security grill and an insect screen.A sliding panel is fitted to the side of the door facing the interior of the dwelling so that the panel can close the aperture, or be opened to allow ventilation while still maintaining security and the exclusion of insects from the building.

Abstract: A magnet support and retainer for post-construction installed interior storm windows formed as a unitary plastic extrusion having a U-shaped pane-receiving portion, a rigid magnet mounting portion and a connecting portion, preferably flexible, formed therebetween. The magnet mounting portion includes an elongate rigid planar strip having a pair of depending edge flanges defining a cavity for tightly receiving a strip magnet of generally rectangular cross-section and an intermediate depending flange including barb portions adapted to be received tightly within a facing groove formed in the magnet. The opposite magnet face is engaged upon a ferromagnetic strip or sash surface for installation of the storm window. Resilience is afforded sufficient to compensate for irregularities in the pane or in the cooperating ferromagnetic surface when the storm window is installed. The magnet is force fitted in the cavity enabling easy assembly.

Abstract: A rear window louvered shade for an automobile having a long downwardly sloping rear window which can be disassembled into parts for shipment is described. The construction provides an assembled shade which hides from view the points where the parts are joined together.

Abstract: A burglar guard for windows and doors is constructed of unbreakable, bullet-resistant transparent sheet material such as polycarbonate or Lexan plastic. The window guard comprises a generally planar, rectangular transparent sheet member having apertures in each of its corners which is installed on the interior of the building and covers existing conventional windows. Threaded studs are mounted in the wall studs adjacent to the existing window frame and the window guard is installed thereon by means of washers and threaded knobs for quick and easy installation and removal. A door guard is also constructed of the same unbreakable, bullet-resistant transparent sheet material and comprises a generally square, box shaped member enclosed on five sides. The door guard is installed on the exterior surface of the door and covers the existing conventional door knob.

Abstract: An improved window construction including a combination metal/wood support frame for a double hung metal window sash, the metal window sash being provided with side channels for reception of counterbalance springs therein. A screw-threaded bow adjuster is provided which is usable for installing the combination wood/metal frame in the house framing for eliminating any bow therebetween to reduce heat losses therethrough. A wood sash liner/fascia is provided for covering the metal window to give same the over-all appearance of a window made entirely of wood. The wood sash liner/fascia preferably being provided with a plurality of muntins thereacross which are joined with tongue and groove type joints. The top horizontal bar of the bottom window being provided with a lock covering recess and the lower horizontal bar thereof having hand-recess cut-outs.

Abstract: A window having a blind disposed between interior and exterior panes of glass. A glazed interior door is movably disposed on the lower frame of a glazed exterior door, and the blind is disposed between these doors to form a double-glazed door. A plurality of sash rollers are movably mounted to the lower frame of the interior door and capable of moving along the rails mounted to the lower frame of the exterior door. Screws are detachably screwed into the interior and exterior doors to prevent these doors from moving relative to each other. The double-glazed door is arranged on the rails in the sash via a plurality of sash rollers which are rotatably mounted to the lower frame of the exterior door.