Abstract: A device for digging a trench having a vertical face and a sloping face. The device includes a rotor configured to rotate about an axis of rotation and means for moving the device in a direction of travel substantially perpendicular to the axis of rotation. The rotor includes a longitudinal rotor member and angled end portions coupled to the longitudinal rotor member. The rotor may also include a plurality of teeth-like elements coupled to the angled end portions.

Abstract: A continuous ironing and automatic cutting apparatus, is provided. The apparatus mainly makes use of a cloth roll stand, a marking device, a few sets of buffering devices, and an automatic cutting device, in cooperation a conventional pressing device and a corking device, to accomplish a continuous ironing and automatic cutting operation.

Abstract: A pocket-flap pressing device for pressing pocket flaps of different sized pockets located on a garment. The pocket-flap pressing device is used to press the pocket flaps of a standard-issue military uniform that includes four different sized pockets on the military blouse and pants. The pocket-flap pressing device includes a board-like body that is flexible and has a padding attached to one side of the body. A heat resistant, flame-retardant cover encloses the board-like body. The board-like body includes a plurality of edges that each have a length corresponding to one of the different sized pocket flaps. A first edge of the pocket-flap pressing device corresponds to the length of a top pocket located on a military blouse. The second edge of board-like body 42 corresponds with the length of the pocket flaps of the bottom pocket of a military blouse. A third edge of the board-like body corresponds with the length of pocket flaps of the cargo pockets of a pair of military pants.

Abstract: A point-of-purchase display assembly or signage includes gear discs which rotate about parallel axes and have light transforming material disposed on their outer faces. The discs are rotated (at about 10-20 rpm) to continuously change the visual perception by an observer of the light transforming material. The light transforming material may be holographic or diffraction material, or patterned metallized foil. Modules of the gears are mounted in a linear support, or in channels in a bar or plate, and are covered by a lens. Alternatively, a number of gears/discs may be connected together by chain links. All of the elements are preferably of plastic.

Abstract: A public display apparatus that provides a relatively large, high-quality visual image by using a sheet of flexible transparent material with high-quality images on it suspended between a driven roller and a tension roller inside a container body. The rollers are parallel with a distance between them creating a display area. A driving source is connected to the driven roller to rotate the driven roller and move a sheet with the images either forward or backward. A tension source is connected to a tension roller to maintain the tautness of the sheet with high-quality images and the visual images distortion free.

Abstract: A display device, particularly for the display of music titles in a jukebox includes a frame housing, two juxtaposed stacks of information carriers arranged vertically one behind the other, with a front information carrier of a first one of the stacks of information carriers and a rear information carrier of a second one of the stacks of information carriers being simultaneously displaceable by a displacing mechanism relative to one another toward the respective other stack of information carriers. In order to displace the respective front and rear information carriers, the two stacks of information carriers are movable by the displacing mechanism relative to one another in synchronized steps and offset by the thickness of an information carrier. The direction of movement of the movable and displaceable information carriers is reversible by a reversing mechanism. The information carriers of each stack of information carriers are supported at edges thereof in the threads of threaded spindles.

Abstract: A fastening system which may be used for fastening boards, particularly illuminated advertising signs, by the opposite edge thereof to a frame structure. In the fastening system, the fastenable edge of a board are (15, 16) are fitted with a fastening profile (8) having a substantially H-shaped cross-section. The fastening system includes a cross-sectionally substantially C-shaped locking profile (9) as well as fastener (10) for fixing the C-profile (9) to a tubular member (2), included in the frame structure and cooperating with the C-profile. The fastening of board edges (15, 16) to a frame structure can be effected by placing a leg (9a) of C-profile (9) in a groove between the legs (8a) of H-profile (8) extending away from the board in a manner that the H-profile settles against the tubular member (2). Thereafter, upon fixing C-profile (9) to tubular member (2) with fastener (10), the H-profile (8) is locked through the action of friction between the leg (9a) of C-profile (9) and the tubular member (2).

Abstract: A sign body has light transmitting side panels for displaying information. The panels are arranged adjacent each other in a relationship that provides a top opening for entry between the panels of light emitted from fluorescent tubes in a light fixture mounted in the ceiling of a room. A reel having a spindle on which a web similar to a household window shade is wound. The sign body is supported on the free end of the web. The sign body can be raised manually sufficiently for the top opening to be near the light source for illuminating the panels from inside of the body and the body can be held there by tension in the web. The body can be pulled down manually in which case the web unwinds and holds the sign body at a level above the floor of the room so the sign can be accessed for maintenance or exchange of information bearing media.

Abstract: A display device is formed of thin plastic sheet material extending about a peripheral frame. The frame is formed of a relatively stiff annular core element encapsulated within a resilient foam sheath or shell. In attaching the plastic sheet to the annular frame, edge areas of the sheet are wrapped about the surface of the rubber shell so that the shell is deformed inwardly toward the frame central axis, whereby the deformed shell exerts outward force on the plastic sheet to prevent or remove wrinkling of the sheet. The display device may be suspended, as from a cord or a button on a garment of a person.

Abstract: An apparatus for assisting a human in loading ammunition into a clip which takes the form of an elongated housing upon which is mounted a manually pressable rod. The housing is to be mounted in a fixed position on the exterior wall of the clip. Manual pressing of an actuator mounted on the rod will cause the bullets contained within the clip to be moved in a downward direction away from the access opening of the clip so as to facilitate entry of another bullet into the access opening of the clip.

Abstract: A sub-base for a gun, such as a semiautomatic shotgun, that has a metal receiver. The sub-base of this invention permits a gunsight, such as a telescopic gunsight, to be removably mounted to the top of the gun's receiver with rigidity sufficient to remain in calibration permanently despite recoil. This substantial rigidity is obtained by fastening the sub-base to both sides of the receiver at their thickest parts and by angling the fasteners to maximize their holding power.

Abstract: A laser sight that can be concealed within a standard autoloading handgun. The invention features a chassis that is mounted to the front face of the slide of the handgun. The chassis has the same cross-sectional profile of the handgun and extends the slide by only about three quarters of an inch. Therefore, the handgun can be carried in standard holsters. The standard spring recoil guide is replaced by a novel battery pack designed to be used with commercially available batteries providing about 12 hours of operating time. The device is activated by a three different membrane switches, one on the chassis itself to select between an infrared laser, a "red" laser, and an incandescent light; a second membrane switch on the trigger which activates the sight when a slight pressure is applied; a third membrane switch located on the side of the frame so that the sight can be activated without placing a finger on the trigger.

Abstract: An apparatus for emitting a selectively adjustable laser beam for illuminating a target at various distances from the apparatus, whereby the width of the laser beam may be broadened or narrowed selectively, so as to maintain the diameter of the beam imprint at a constant on targets of various distances. A mechanism is provided for selectively sliding the laser source with respect to a lens system, to thereby achieve a particular distance between the laser source and the lens system, this particular distance determining the width of the laser beam. The apparatus is mounted directly to a weapon for sighting purposes, and further comprises a windage and elevation adjustment mechanism; a remote control system whereby the laser beam can be narrowed or broadened without having to directly access the main housing; and a drop compensation mechanism whereby projectile drop is compensated for automatically.

Abstract: Devices for supporting a fishing rod with a hook adapted to signal the user when a fish bites a hook comprising a rectangular support box. The box has a battery positioned therein. A support assembly is provided comprising a generally C-shaped rearward support component and a U-shaped forward support component. The U-shaped component is located above the C-shaped component whereby when a fishing rod is located in contact with the C-shaped and U-shaped support components, the rod will be maintained at a proper angular orientation for fishing. A crossbar supports the U-shaped support with a pair of springs attached to the box with their upper ends urging the crossbar and U-shaped component upwardly. An adjustable trigger is adapted to be contacted and depressed by a fishing rod supported in the support assembly when a fish bites the hook of the fishing rod. A horn is mounted adjacent to the box and operatively coupled with the battery and trigger and is adapted to be sounded upon the biting of the hook.

Abstract: A counterweight assembly for balancing fishing rods utilizes an elongated, hollow butt cap mounted over the rear end of a fishing rod handle and supporting one or more counterweights internally or externally of the cap. The counterweights are selected as to weight increment and number so as to effectively balance fishing rods of different lengths about the fulcrum defined by the user's hand grip on the rod handle at the reel location.

Abstract: A spinner fishing lure having a frame including first and second diverging arms lying generally in the same plane. A hook is connected to the frame at the distal end of the first arm and lies generally in the plane of the first and second arms. The lure also includes at least two blades and connectors for connecting the blades to the frame generally at the distal end of the second arm. The blades are tethered to the connectors at spaced apart connection points such that the blades may swivel relative to the connectors generally sweeping out overlapping cones as the blades travel through the water so that the blades periodically strike one another to produce a noise attractive to fish. The connectors are configured so that the connection points of the blades and the blades are substantially vertically aligned as the lure is pulled through the water.

Abstract: A fishing lure is described containing a cast of a natural bait encased in a castable transparent material designed in hydrodynamically correct shapes and to operate at different depths by utilizing an adjustable buoyancy device. A cast of a natural bait being the embodiment of a natural bait in the form of a castable material taken from the cast of a natural bait and then painted, to which an adjustable buoyancy device is incorporated by containment within the lure or attachment to the lure of a sealed air chamber wherein the adjustable portion consists of a cylinder which is threaded on the inside to accommodate a set screw/gasket seal combination. Rotation of the set screw varies the lure's buoyancy by compressing the air in the air chamber thus varying the fluid displacement volume of the lure and also changing the center of gravity of the lure.

Abstract: A line fishing apparatus having a generally bulbous head and tapered tail is inserted inside a fish used for bait. Before the apparatus is inserted, the apparatus slides freely along the fishing line. The bulbous head portion is shaped to fit the inner dimensions of the bait's mouth. When the bait's mouth is closed around the apparatus, a bumper portion sticks out from the mouth protecting the head of the fish from striking bottom. As the apparatus is inserted, the tail portion is pushed through the bait's stomach toward the bait's tail. The apparatus tail portion is curved along an arc as it tapers to a distal end. The curvature forces the bait to curve along its length. As a result, when the line is pulled through the water, a swinging or spinning action is induced. The swimming motion generally resembles that of a live, injured fish.

Abstract: A fish line rudder facilitates carrying a fish line in current to either or both sides of a boat, or guiding the fish line laterally to current flow within a stream. The rudder includes an elongated body with opposed arcuate wing members. Top and bottom central radial rudder plates extend axially along the body between the two wing members. The body includes flotation at a forward section thereof. Line receivers are mounted near forward and rearward body ends, to slidably receive the fish line therethrough and define an axial "way" along the top side of the body. A line grip, on the bottom side of the body releasably secures a point along the fish line extending forwardly of the forward line receiver. The line extends forwardly from the grip to the fish pole and rearwardly from the grip through the way, to a hook. When in the water, the device will react to resistance offered by the fish line, to move the fish line laterally across current, to locate the fish line according to the fisherman's desire.

Abstract: A fishing rig for sport fishing applications. The fishing rig comprises a hollow cylinder having a top end and a bottom end. A top cap is removably coupled to the top end. A bottom cap is removably coupled to the bottom end. The apparatus includes a first top swivel removably coupled to the top cap for receiving a fishing line. The fishing rig further includes a second top swivel which is removably coupled to the top cap in diametrical opposition to the first top swivel. A bottom swivel and hook is removably coupled to a swivel at the bottom end cap. A metal crimped-sleeve leader and hook is operatively coupled to the second top swivel.

Abstract: An improved minnow container that is adapted to carry water and oxygen therein when in an upright position is disclosed. The container comprises a water receiving and retaining chamber that is substantially open at its bottom end and has a first opening in the top thereof and an oxygen receiving and retaining chamber that is substantially open at its bottom end and is sealed above the open bottom end so as to preclude the escape of oxygen therefrom when the container is in its upright position. A barrier means physically separates the oxygen receiving and retaining chamber and the water receiving and retaining chamber so as to preclude the passage of fluid between the water receiving and retaining chamber and the oxygen receiving and retaining chamber. The barrier means terminates at a lower boundary in a passageway that is generally below the barrier means. The passageway connects the water receiving and retaining chamber in fluid communication with the oxygen receiving and retaining chamber.

Abstract: An irrigation valve adapted to be placed in an inlet pipe for irrigation liquid under a cultivation table for potted plants or the like. The irrigation valve includes a valve housing with an inlet and an outlet as well as a mixing chamber and a nozzle. The valve further includes a lateral opening for enabling an introduction of air to be mixed with the irrigation liquid and for draining of irrigation liquid. A number of the valves may be used in an irrigation plant with one valve being provided under each cultivation table and being activated by a magnetic valve disposed in an inlet pipe for providing water under pressure.

Abstract: An apparatus and method is disclosed for injecting a treatment liquid into a hole drilled into a trunk of a tree comprising a container for receiving the treatment liquid and a closure for closing the container. A one-way valve means enables a pressurized gas to be introduced into container. A control valve controls the flow of liquid from the container into a flexible tubing. The flexible tubing has an injector nozzle for insertion into the hole in the trunk of the tree for enabling the pressurized gas to force the treatment liquid into the hole in the tree to administer the treatment liquid thereby.

Abstract: A vacuum infusion system and method provides for the introduction of desired chemical or treatment fluid directly into functional water conducting elements of a tree without the introduction of air and the subsequent embolization and dysfunction of part of the trees normal transpirational stream. With the present system and method, an orificed-needle is passed through a previously evacuated chamber containing a liquid medium which has been degassed. The insertion of the orificed-needle through this degassed liquid prevents the introduction of air into the tree while the treatment fluid is being pulled into the tree's transpirational stream by the normal xylem tension.

Abstract: A high-density type cultivation equipment has an improved mechanism to transfer cultivation beds from one main rail track to the adjacent main rail track, in which transfer rail tracks 1 that connect ends of main rail tracks 3 consist of two pairs of parallel feed rollers 1' that are rotated in a common direction at an identical velocity, are arranged with a track gauge related to the distance between wheels which cross said main rail tracks with an angle declined from a right angle by a feed angle .alpha. at substantially the same height with said main rail tracks. The wheels 15 of cultivation beds B have the axles 15a thereof fixed in direction to be perpendicular to the central axes of the main rails. As means to drive said cultivation beds B along the main rail tracks 3 in a cyclic path, hook means 4 that detachably engage with structural members 10 of said cultivation beds B are provided to be driven in the direction parallel to the main rail tracks 3.

Abstract: A transportable, long-term growth pouch for a plant. The plant pouch is a polypropylene enclosure having an opening in its top wall for extension of the growing plant and is formed having a low height so that it can lay close to the ground in use. In a further embodiment of the present invention the plant pouch includes a lower chamber that houses rocks, sand, granular particles, etc. that are selectively released for decorative support of the growth medium.

Abstract: A new and improved protection apparatus is provided for a plant pot. The protection apparatus is installed in the plant pot which contains a quantity of soil and a plant therein. The protection apparatus includes a planar base member and an array of ridge portions that project upward from the planar base member. The ridge portions are arrayed on the planar base member in an alternating arrangement of planar base member portions and ridge portions. A plurality of apertures is located in the planar base member portions for permitting water to pass from the planar base member portions to the soil in the pot. A slot extends through a portion of the planar base member and through respective portions of the respective ridge portions. The slot permits respective opposing portions of the planar base member and the ridge portions which are adjacent to the slot to be separated by a person installing the protection apparatus in the pot.

Abstract: Modular, powered closure apparatus for installation as a unit into an opening of a building. The apparatus includes a rigid framework to be secured to the building and closure panels, one of which is affixed to the framework and the other of which is slidable in the framework. The framework includes a housing which accommodates an electric motor and transmission means extending between the motor and second closure panel to selectively move the second closure panel between open and closed positions.

Abstract: Disclosed herein is a wood-cased glass door assembly in which a glass door that may be opened is composed of a glazing, and wooden stiles and rails, which are fitted on an outer peripheral edge of the glazing. The wood-cased glass door is mounted for opening and closing into a wooden doorcase fixed in an opening in a wall. Thermally expanding materials are separately installed in spaces defined between an inner peripheral portion of the wooden doorcase and outer peripheral portions of the wooden stiles and rails and between inner peripheral portions of the wooden stiles and rails and the outer peripheral edge of the glazing over the entire length in the longitudinal directions of the spaces. The expanding materials foam and expand under heat to block the respective spaces. Metal fittings for holding the glazing by putting the inner and outer surfaces of the outer peripheral edge of the glazing therebetween are fixed to the wooden stiles and rails.

Abstract: An access panel assembly with a door and multi-functional frame which prevents sagging and warping of the door from the frame, and which is more safely and easily installed in both new and existing building structures. Flush mounting of the door to either face of the frame is achieved by a symmetrical mechanism wherein the inner edge of all four sides of the frame opening contains a molded, shallow groove which is equidistantly located from the two faces of the frame. The door contains on its underside a plurality of molded tabs, wherein each edge of the door has one or more tabs located adjacent thereto. The molded tabs are resilient so that they deflect when the door is press-fitted into the frame from either face. The molded tabs slide into the shallow grooves and hold the door firmly in place. Further, the door also contains one or more knockouts on the underside thereof, wherein each knockout is positioned near an edge of the door.

Abstract: A cabinet includes a cabinet body having an internal storage area for receiving items to be stored and a door casing which defines an opening for accessing the storage area. The cabinet door is pivotally mounted to the cabinet body and includes an interior surface and an exterior surface. The cabinet door pivots with respect to the cabinet body between an open and closed position. A gasket is positioned on the door casing such that the gasket substantially covers the door casing. As such, the interior surface of the cabinet door is in engagement with the gasket when the cabinet door is in the closed position.

Abstract: A weatherstrip for a vehicle having a seal gap defined by a door and a door flange surrounding a door opening is provided. The weatherstrip includes a magnet positioned around the door opening in the seal gap such that the door is magnetically secured thereto when the door is closed. The weatherstrip also includes a resilient web having a pocket in which the magnet is mounted and a gripping member having a channel for straddling the door flange. The gripping member has at least one rib on an internal wall of the channel for affixing the gripping member to the door flange. Also, the gripping member is integrally joined to the web to provide a weatherstrip which substantially seals the seal gap when the door is closed.

Abstract: A door for a vehicle is assembled by joining three modules together to facilitate the assembly process. The three modules are an outer module including an outer panel, a window regulator module including a window pane and a window regulator, and an inner module including an interior member. The window regulator module is preliminarily assembled as an independent unit, so that it is easy to adjust the open and closed positions and the movement of the window pane. These modules are joined by fastening means extending along the direction of the thickness of the door, so that the assembly operation is made easier.

Abstract: A motor driven turnstile for providing cyclic access to a passage (16) to which a monitoring system or the like is allocated. The turnstile is controlled in such a way that, after a satisfactory monitoring result, each blocking arm (4) is first taken from the blocking position to a stopping position located at a small angle (alpha) from the blocking position, in which, after external pressure applied by the user, the arm is once again driven by the drive motor (6) and turned further until the next arm is in the blocking position.

Abstract: An automatic surface treating work wheel having controlled speed and pressure for finishing the surfaces of various materials to achieve desired finish results. The pressure is controlled by a counterbalance system using two air pressurized pneumatic cylinders.

Abstract: The object of this invention is, in magnetic disk surface texture processing by abrasive tape, to achieve uniformity of roughness of the processed surface by automatically adjusting the feed speed of the abrasive tape, and to increase productivity. It consists of a sensor unit that measures the processing state of the surface of a magnetic disk on which texture processing has been completed, a holding unit for rotating the magnetic disk during measurement, and a processing equipment that compares the measured values with predetermined processing conditions and again corrects the processing conditions when they depart from the set conditions, and it maintains stable processing accuracy.

Abstract: A method of grinding plural journal portions of a workpiece with plural grinding wheels. In the method, a pair of work rests are used to support two selected journal portions, and the selected two journal portions have a larger initial diameter as compared with the rest of the journal portions. Initially, the selected journal portions are ground without using the work rests. When the diameter of the selected journal portions becomes substantially equal to the diameters of the rest of the journal portions, the work rests are advanced to support the selected journal portions. After that, the grinding wheels are again advanced to grind all the journal portions.

Abstract: A tool holder unit for a robot includes a pantograph linkage which is made up of a frame, a pair of parallel spaced links and a holder block. Each end of the parallel spaced links is connected to the holder block. The tool holder also includes a drive source which drives a tool and an offsetting member which offsets the gravitational force caused by the force of gravity on the tool. The tool moves relative to a workpiece when a force from the drive source moves the pantograph linkage. The pantograph linkage and offsetting member reduce the load on the drive source and move the tool quickly and smoothly.

Abstract: The present invention provides an improved cut-off machine wherein the length of an abrasive wheel in contact with a work is easily adjustable. The cut-off machine of the invention includes: a base with fixed and movable vises for clamping a work; a pair of joint members being supported by a pair of brackets projecting from the rear end of the base so as to pivotably move within a predetermined angle; an arm attached to the upper portion of the joint members; an abrasive wheel mounted on one end of the arm for cutting the work; a handle fixed to the arm for operating the arm; a motor attached to the arm for driving the abrasive wheel; and a compression spring spanned between the base and the arm. The upper mounting position of the compression spring on the arm is closer to the brackets, compared with the lower mounting position of the compression spring on the base. The reciprocating movement of the arm moves the abrasive wheel in the horizontal direction to the current optimal cutting position.

Abstract: A tear resistant coated abrasive article comprises a backing which comprises a film having at least five layers situated one on the other in a parallel array. The layers occur essentially randomly in the array and are individually selected from a stiff polyester or copolyester and a ductile polymeric material. An abrasive layer is on a surface of the backing.

Abstract: An abrasive medium suitable for the cutting tip of a turbine blade of a gas turbine engine comprises cubic boron nitride grit coated with a layer of aluminum nitride. Coating of the grit particles is carried out by vapour deposition in a fluidised bed reaction.

Abstract: A centrifugal finisher having an outer vessel and at least one inner vessel includes a traction surface between the inner surface of the outer vessel and the outer surface of each inner vessel. The inner vessels revolve about the axis of the outer vessel, and rotate about their own internal axes. The traction surface permits the outer wall to restrain the inner vessels and simultaneously causes the rotation of the inner vessels through interaction with the outer vessel, which can be stationary or moving at a different rotational speed and/or at a different rotational direction than the part which revolves the inner vessels.

Abstract: Device for machining contours (2) made of a soft material, such as plastic, and essentially including a rotary tool (6) constituted by abrasive elastic plates (5) whose flexibility makes it possible to dampen the jerks of the member (33) bearing the tool (6). Preferably, a pneumatic motor (9) and a speedometer (10) are used to automatically control the tool (6) at a constant speed guaranteeing a stable machining or cutting force. The method for the automatic machining of flexible burrs on a contour formed of a soft material, is also described.

Abstract: A system for securing a building structure, and various components of a building structure, to one another and/or to the building foundation or ground, is provided. The system includes apparatus for securing shingles against wind damage on a sloped, shingled roof; apparatus for securing the roof structure of a building to the adjacent upper wall structure; and apparatus for securing the roof structure directly to the foundation of the building or to the ground. The system is particularly adaptable to single and two story residential dwellings, such as single family homes and townhouses, and their related structures, such as garages and sheds, having sloped, shingled roofs. Installation of the complete system of the present invention provides substantial additional security for a structure against storm damage, particularly due to high winds.

Abstract: A triangulated cable dome roof having a retractable roof portion includes a triangulated cable arrangement for supporting a roof membrane, a roof membrane which is fixed to a portion of the triangulated cable arrangement so that a portion of the underlying area is exposed, and a retractable roof portion movably secured to the triangulated cable arrangement. The retractable roof portion preferably includes one or more retractable roof sections, each of which is movable between a closed position in which the retractable roof sections overlay the uncovered portion of the triangulated cable arrangement and an opened position in which the retractable roof sections nest above the covered portion of the triangulated cable arrangement, thereby exposing a portion of the underlying area.

Abstract: A post for mounting in a concrete slab is disclosed. The post has an elongated rigid body with a mounting end. A pair of mounting rods extend from the mounting end. The body of the post is formed from an extruded aluminum shell. The mounting rods extend through channels which are formed in the shell and are held in place in the channels by an expandable grout. The expandable grout both holds the mounting rods in the shell and acts with the mounting rods to reinforce the shell. The shell is preferably in the form of a pair of tubes joined by a web. Attachments may be made to the post with fasteners which pass through apertures in the web. The post is quick to install, may be mounted close to the edge of a concrete slab with reduced risk of damage to the edge of the slab, and is extremely rigid.

Abstract: A structural element is disclosed which is substantially composed of a linked chain and of a flexible connection which can be a chain of identical links and which can be assembled together as required to form a rigid beam. The linked chain comprises opposing support points, the first support point of one link of row n of the chain cooperating with the second support point of a link of row n-1 to contain, while the element is being rendered rigid, hooking elements integral with the flexible connection and which, in the preferred embodiment of the invention, are the pins of the second chain. The structural element can be assembled or disassembled using a special device.

Abstract: A roof window includes a glass unit and a sash member having an inner surface. The sash member is sized and positioned over a frame, wherein the inner surface of the sash is stacked over and is substantially in alignment with the inner surface of the frame. The window may also include a glass retaining member and shroud operatively connected to the retaining member. Still further, the roof window includes a compression frame gasket and interior gasket.

Abstract: A system and method is employed for installing a curtainwall thermally broken multi-system of four sided stopless butt-joint glazing or facing panels with dry gasketted joints. A retainer clip assembly attaches facing panels of glass, metal, granite, marble, plastic, acrylic, insulation or the like of single, multiple or composite panels. The curtain wall multi-system can have an irregular geometric impression. All field labor for initial installation or replacement takes place from inside the building. A supporting metal grid can include split mullion interlocking halves which are anchored to the building's structure. A retainer clip assembly reduces tension stress and insures a fail-safe thermal break system. Glass, facing panel, louver infills, framed operable window in one plane or multiple planes, dual glazing of glass, acrylic sheets or any combination thereof can be used with the grid. In other embodiment, thermal break spacers are positioned between interlocking portions of a mullion.

Abstract: A clip for retaining a metal ceiling panel in position relative a ceiling runner. The clip will fasten to the horizontal flange of a ceiling runner or the lower end of the wall molding supporting a cut edge of a metal ceiling panel adjacent a wall structure.