Abstract: A construction system definable in terms of an X, Y, and Z coordinate axes which provides a first part having a hollow three-walled web elongate in the Z axis, having a series of rigid securement flaps on the upper Z edges of the elongate Z axis member; and a second part having at least one open end for complemental engagement of the first part wherein the second part may fit over distal ends of said first part in which a cross-section of the second part is generally that of the first part, but wide and tall enough to allow the first part to slip within the second part, and said second part having an opposite end of said opening, wherein said second part securing the first part to a structural support.

Abstract: A composite assembly includes a series of elongated layers joined lengthwise thereof. At least two of the elongated layers each have an upper elongated portion and a lower elongated portion secured together in an end-to-end relationship at a joint therebetween by a connector arrangement. The upper elongated portion is constructed of a wood material, and the lower elongated portion is constructed of a non-wood material. The lower elongated portion may have a reinforcing rod therein.

Abstract: An adhered roofing system comprising a roof substrate, a thermoplastic membrane including at least one layer that includes a functionalized thermoplastic polymer, and an adhesive securing the membrane to the substrate, where the adhesive includes a cured residue of a polymer having a silicon-containing hydrolyzable terminal group.

Abstract: A gutter adapter.

Abstract: A stair box system made of a stair box core, stringers, risers and treads. The inner surfaces of the stringers have a discontinuous series of mortises positioned to engage only with the treads. Each tread is beveled from the front to back surfaces and each of the riser is beveled from the top to the bottom surface. Each tread features one or more notches cut into its back surface and each riser includes a complementary hook cut into its bottom surface. The hooks on the risers engage the notches on the treads forming an open-faced channel. Removable covers fit over the treads of the stair box core. These covers protect the stair box core and/or they feature decorative building materials like hardwood or tile. The system allows the user to upgrade their stairs by replacing the covers with covers featuring a different finished surface.

Abstract: A system for mounting wall panels to an existing wall, includes adjustment support members to be secured either directly or indirectly to an existing wall; connecting panels for connecting together spaced apart adjustment support members, with each connecting panel adapted to support a wall panel thereon; each adjustment support member including a central platform wall, and two U-shaped tracks extending along opposite side edges thereof, each U-shaped track including an upper exposed surface arranged parallel to the existing wall when the adjustment support member is secured to the existing wall and first and second end walls extending at orthogonally from opposite sides of the upper exposed surface so as to define a channel therebetween; and each connecting panel including a main panel wall and two opposite slide walls extending from opposite side edges of the main panel wall to be positioned in the channel for sliding movement therein.

Abstract: An improved resilient wallboard channel constructed and arranged for attachment to a surface of a framing member and accommodating standard fasteners. Included on the present channel is a first, generally planar surface having an elongate edge, an inclined web disposed along the elongate edge and projecting at an oblique angle relative to the first surface, a web edge of the inclined web opposite the first surface is shared with a second, generally planar surface, a stop flange, which is shorter than the inclined web, projects from a stop flange edge of the second surface opposite the inclined web, and the first surface and the web edge are separated by at least ¾-inch measured normally from the framing member surface.

Abstract: A floor covering comprises at least first and second floorboards. Each floorboard respectively defines opposite longitudinal ends, an exposed outer surface and an opposite underside surface for engaging a subfloor, and comprises mating structures at each lateral side thereof. The first and second floorboards are configured to be adjacently assembled in a side-to-side arrangement with the mating structure of one of the lateral sides of the first floorboard vertically and removably mating with the mating structure of one of the lateral sides of the second floorboard. The floor covering includes at least one clip for being fastened to the subfloor and comprises mating structures at each lateral side thereof for vertically and removably receiving the respective mating structures first and second floorboards at each lateral side thereof.

Abstract: A tile leveling structure includes a fixture, a leveling member mounted on the fixture, a first wing pivotally connected with the leveling member, and a second wing pivotally connected with the leveling member. The first wing is provided with a first push section and a first pressing face. The second wing is provided with a second push section and a second pressing face. When the first push section of the first wing and the second push section of the second wing are pushed, the first pressing face of the first wing and the second pressing face of the second wing are moved to respectively press the first tile and the second tile so as to level the first tile and the second tile.

Abstract: The present invention relates to a formwork arrangement for forming a suspended concrete floor slab comprising a change in level in an underside thereof, a support bracket for use with such a formwork arrangement, and a method for employing the support bracket and formwork arrangement.

Abstract: A tool shaped in a U-shape for accepting a standard U strut. The tool has opening for marking the strut for cutting purposes and hole openings for marking the center of standard struts.

Abstract: A method for repairing or upgrading of existing insulated glass units already installed into a window framing or curtain wall system is provided. The method includes removing an inside glass stop from a window framing housing the insulated glass unit to provide access to an inner glass panel and detaching the inner glass panel from an outer glass panel via a breaking or altering of the separator, with the outer glass panel being retained in place within the window framing. The method also includes applying a new separator to the inner glass panel and/or the outer glass panel, reaffixing the inner glass panel to the outer glass panel while maintaining a space between the inner glass panel and the outer glass panel to form a hermetically sealed cavity therebetween, and reinstalling the inside glass stop back onto the window framing, to secure the inner glass panel in place.

Abstract: A floating pool skimmer (1) that randomly travels across the surface of a pool to ensure that the entire surface of the water in the pool is cleaned. The floating pool skimmer has an elongated hose (3) that attaches to a conventional fixed pool skimmer, a vacuum inlet and/or a vacuum hose (6) connecting an automatic pool vacuum (2) to a pool pump and filter. A basket (26) held within a main housing (8) strains water and traps debris which is held in the basket by suction from the pool filter while the pool filter is operational.

Abstract: A pool cleaning robot that may include a filtering unit for filtering water that passes through the pool cleaning robot; a sensor for sensing a cleanliness of the filtering unit while submerged in water; a controller that is configured to determine, based on the cleanliness of the filtering unit, a cleaning process to be applied on the pool cleaning robot by an external system; and a communication unit that is configured to transmit information about the cleaning process.

Abstract: A pool cleaner that may include a housing; a driving motor that is configured to assist in moving the pool cleaner; a filtering element that is at least partially surrounded by the housing; an intake aperture; a first fluid conduit; and a first grille that comprises two or more movable first panes; wherein the filtering element is configured to filter fluid from the intake aperture to provide filtered fluid; wherein the first fluid conduit is configured to direct the filtered fluid towards the first grille; and wherein the first grille is configured to output the filtered fluid at a first direction that is responsive to a position of the two or more movable panes.

Abstract: An example system is disclosed that may include a diaphragm, a pair of C-channels coupled to the diaphragm, a horizontal beam having two opposite ends, a pair of collars configured to slide onto the two opposite ends of the horizontal beam, the pair of collars each including a flange around a perimeter of each of the pair of collars, the flange configured to couple to an end of each of the pair of C-channels, a pair of columns coupled to the two opposite ends of the horizontal beam, and a brace coupled to at least one column of the pair of columns and the horizontal beam. An example method is disclosed for translating a lateral load from a diaphragm to a lateral load support system.

Abstract: The present invention relates to a buckling resistant spring clad bar (BRSCB) to improve lateral confinement of compression system uniformly so as to enable it to (a). applied loads withstand both compression and tension (b). ability to withstand much higher axial compression loads (c). significant improvement in post-elastic behavior due to enhanced ductility without strength degradation. The BRSCB comprises a plurality of bar, a plurality of one-way spring in an embodiment, a plurality of grips, and a plurality of peripheral ties. The system further comprises a plurality of opposing spring in another embodiment. In the opposing spring, one of the springs is wrapped in a clockwise direction and another one in an anticlockwise direction. Both the ends of the bar are covered with the end grip to hold the assembly firmly and to avoid end slippage of the one-way/opposing spring. The multiple bars wrapped with the spring are connected together with the peripheral ties to form desired cage assembly.

Abstract: A barbed stake is an apparatus used to secure tarps, tents, and other items to the ground or to other surfaces. The barbed stake includes a stake body, a head, a stake tip, and a plurality of barbs. The head and the stake tip are positioned on opposite ends of the stake body. The head provides a large area to strike for driving the barbed stake into a surface. The head may also be used to pry the barbed stake out of a surface. The stake tip provides a pointed end to the barbed stake which helps the barbed stake to pierce a surface. Each of the plurality of barbs is laterally connected to the stake body and is aligned parallel along the stake body. In order to balance the barbed stake, each of the plurality of barbs is diametrically opposed to a corresponding barb.

Abstract: A door trim assembly comprises a handle coupler, spindle driver, clutch, motor, and clutch driver assembly. The clutch is configured to selectively engage and disengage the handle coupler to the spindle driver. When engaged, the spindle driver rotates with the handle. When disengaged, the handle rotates freely of the spindle driver. The clutch driver assembly includes an escapement spring positioned coaxially with the motor shaft and held between first and second spring seats. A motor is operable to rotate the first spring seat. The second spring seat carries a pin or cam to operate the clutch and is biased by legs of the escapement spring to rotate with the motor. If the second spring seat is blocked from rotating, then rotation of the first spring seat winds the escapement spring.

Abstract: Disclosed herein is a mechanism (10) for transmitting a torque applied to a handle (12). The mechanism (10) comprises a torque transmitter (18). The torque transmitter (18) is for transmitting the torque applied to the handle (12) coupled thereto. The mechanism (10) comprises a torque transmitter stop (40) within the housing (14). The torque transmitter (18) and the torque transmitter stop (40) are cooperatively arranged for the torque transmitter stop (40) and the torque transmitter (18) to engage to arrest a torque transmitter rotation. The torque transmitter (18) and the torque transmitter stop (40) are cooperatively arranged for the torque transmitter stop (40) and the torque transmitter (18) to disengage when the torque so applied exceeds a predetermined torque value. Also disclosed herein is a method for operating the mechanism (10) for transmitting a torque applied to the handle (12).

Abstract: A striker box assembly provides enhanced security when locking a door where the assembly includes two boxes and one common cover plate attached to the two boxes where each box is associated with a latch from a locking device. The combination of the two boxes and common cover plate make the assembly stronger where a deadbolt and doorknob lockset are both locked, but if the latch in the doorknob lockset itself breaks while the box associated with that latch is still firmly attached to a stud, that box continues to resist the breaching of the door through the common cover plate reinforcing the box associated with the deadbolt.

Abstract: No matter a latch is extended or retracted at initial state, a method for automatically determining the installation direction of an electronic lock is able to determine the electronic lock is installed on left or right hand door by driving a rotation module to rotate in first or second direction and changing the potential of a signal outputted from a micro switch depending on the rotation module whether touches the micro switch. The method is applicable for more convenient to consumer on installation of the electronic lock.

Abstract: Forged frame handcuffs are described, including a lighter but stronger rigid pair of handcuffs that includes integral side plates.

Abstract: In a state in which a high-frequency signal at a first detection frequency f1 is input to an LCR resonance circuit 20, upon detecting that a voltage signal S1 is greater than or equal to an upper-limit threshold value Vth11 or less than or equal to a first lower-limit threshold value Vth12, a high-frequency signal at a second detection frequency f2 is input to the LCR resonance circuit 20. Then, in a state in which the high-frequency signal at the second detection frequency f2 is input, the proximity of a human body or water to a sensor electrode 22 is detected by detecting that the voltage signal has reached less than or equal to a second lower-limit threshold value Vth21.

Abstract: A door handle device for a vehicle includes a door opening prevention mechanism that is provided with an inertia lever being rotatably supported at a base frame, an inertia body being mounted to the inertia lever, and an elastic member elastically biasing the inertia lever toward an initial position where the movement of a link mechanism is not restricted by the inertia lever. The inertia lever includes a center of gravity of the inertia lever being set at a same position as a position of a center of gravity of the outside handle in an extending direction of the outside handle, the center of gravity of the inertia lever being set at a same position as a position of the center of gravity of the outside handle in vehicle upper-lower directions, or being set at a lower position relative to the center of gravity of the outside handle.

Abstract: A door checker apparatus for a vehicle configured for realizing an optimized operation of opening or closing, of a door when the door is opened or dosed, may include a checker arm having a first end portion connected to the vehicle body and a second end portion connected to the door, a slider provided to be movable with respect to the checker arm, an elastic member configured to elastically support the slider, and a checker case accommodating the slider and the elastic member and provided to be movable with respect to the checker arm, wherein the checker case is injection-molded with a plastic material.

Abstract: A refrigerator appliance includes a cabinet with a door positioned at the front of the cabinet. The refrigerator appliance also includes a hinge having a hinge bracket coupled to the cabinet. The hinge bracket includes a lateral plate. A pivot pin is received in the lateral plate. The door is rotatably coupled to the pivot plate. A lateral surface of the door is spaced apart from the lateral plate of the hinge bracket along the vertical direction by a height. An adjustable spacer is positioned between the lateral plate of the hinge bracket and the lateral surface of the door to adjust the height. The adjustable spacer includes a rotatable washer and a fixed washer abutting the rotatable washer. The rotatable washer includes a first inclined engagement surface and a second inclined engagement surface. The fixed washer includes a third inclined engagement surface and a fourth inclined engagement surface.

Abstract: An integrated hinge structure is disclosed herein, comprising a hinge shaft provided on a first connecting member and a hinge arm provided on a second connecting member, the hinge arm being rotatably connected to the hinge shaft, wherein a coupling structure is formed between the hinge shaft and the hinge arm, the coupling structure allowing the hinge arm only to be installed to or detached from the hinge shaft in a certain direction and allowing the installed hinge arm to rotate for any angle or freely while staying connected to the hinge shaft. Furthermore, the hinge shaft and the hinge arm are respectively formed integrally on the corresponding connecting members, providing a simple and firm structure.

Abstract: The invention relates to a furniture hinge (10) with a hinge cup (52) having cup side walls (52.4) which encircle a cup opening at least partially, and having a cup bottom (52.1) which at least partially closes off the hinge cup (52) opposite the cup opening, with a spreading element (70) having two clamping jaws (72.1, 72.2) which at least partially radially enclose the cup side walls (52.4) of the hinge cup (52) and which are connected via a flange (71), and with a lifting arrangement for adjusting at least one of the clamp jaws (72.1, 72.2) between a first position and a second position. Here it is provided that at least one of the clamping jaws (72.1, 72.2) comprises at least one integrally formed spreading extension (76, 78) which, in the transition from the first position into the second position, cooperates with the hinge cup (52) so that the clamping jaws (72.1, 72.2) are spread.

Abstract: A tensioning assembly for winding a winding system includes a support bracket connectable to a fixed frame, a collar portion removably mountable onto a shaft of the winding system proximate to the support bracket, a ratchet wheel, and a pawl component. The collar portion is removably secured onto the shaft. The ratchet wheel is securely mounted onto the collar portion and is rotatable therewith. The ratchet wheel has a plurality of teeth and a plurality of corresponding recesses. The pawl component is operatively mountable on the support bracket and is moveable with respect to said support bracket, the pawl component having an extremity being positioned, shaped and sized with respect to at least one recess of the ratchet wheel for allowing rotation of the shaft along a winding direction, and for blocking rotation of the shaft along an unwinding direction.

Abstract: A laundry appliance including a chassis with a cabinet enclosing an interior of the appliance. A tub is provided within the appliance defining a liquid chamber. A drum is provided in the liquid chamber defining a treating chamber for treating articles according to a cycle of operation. The treating chamber can be enclosed by a door, selectively openable by a user to access the treating chamber. The door can be selectively opened in three different ways.

Abstract: An automated sliding door closing system to be used with wire mesh enclosures. The door closing system includes support brackets with wire mesh connected between the support brackets. A sliding door track is connected to the support brackets. Sliding door connection bolts slide within the sliding door track and support a sliding door. A spring biased closing mechanism is connected to the sliding door track. The spring biased closing mechanism is biased to keep the sliding door closed. A door roller track is rigidly connected to the sliding door. A connection arm is connected between the spring biased closing mechanism and the door roller track. The connection arm includes a roller inserted into the door roller track. A strike plate is rigidly connected to one of the wire mesh support brackets. The connection arm rotates to close the sliding door after the sliding door has been opened.

Abstract: The invention relates to a furniture hinge comprising a stop element and a hinge cup that is pivotally connected to said stop element by means of an articulated lever, a damper being arranged in a housing and this housing being connected to said hinge cup by means of securing elements. The hinge cup comprises a centring region and a mounting region that has a cup depth less than that of the centring region and, in said mounting region, the housing with the damper is secured to the hinge cup from the outside. This achieves a damped furniture hinge which can be cleaned easily and can be installed quickly on a furniture part.

Abstract: A bracing system for a door having a height, a width, a periphery and adjacent surrounding structure. The bracing system includes a first anchor positioned adjacent the periphery and fixed to the surrounding structure. The bracing system also includes an anchor surface positioned on the surrounding structure adjacent the periphery substantially opposite of the first anchor. The bracing system further includes a beam fixed to the first anchor and having a distal end configured to be engaged with the anchor surface. The bracing system still further includes an actuator drivingly engaged to the beam. The actuator and the beam are configured such that activation of the actuator causes movement of the distal end with respect to the anchor surface.

Abstract: A water-conducting domestic appliance includes a washing container, a door which is pivotably mounted to the washing container to define with the washing container a washing chamber for washing items, and a door opening module configured to automatically open the door. A detector detects a presence of a living being in a defined area in front of the domestic appliance. In the event the presence of a living being has been detected by the detector in the defined area, a control device prevents the door opening module from automatically opening the door.

Abstract: A mechanism for influencing the opening and/or closing movement of a wing of a door, a window or the like comprises a sliding arm disposed between the wing and a fixed frame, being mounted rotatably on one hand on the wing or frame and on the other hand, guided by a sliding block in a sliding rail disposed on the frame or wing. Here, energy conversion means are assigned to the sliding rail and/or the sliding block, through which the kinetic energy of the sliding block can be converted to electrical energy, and electrical energy produced in this way can be converted to mechanical energy, in order to supply at least one electrical component with electric current, to generate a braking torque and/or to drive the sliding arm, at least in sections, especially to support the closing and/or opening movement.

Abstract: A safe may include a body. The body may include a first sidewall, a second sidewall, a top, a bottom, a rear sidewall and a door that may define an interior volume. The door may be hingably connected to the second sidewall. The safe may also include a first side channel and a second side channel. The first side channel may be attached to the first sidewall and the second side channel may be attached to the second sidewall. The safe may also include a segmentation plate that may include a first vertical side rail and a second vertical side rail. The first vertical side rail may be slideably located in the first side channel and the second vertical side rail may be slideably located in the second side channel.

Abstract: An indoor safety shelter appearing to be one file cabinet or a sset of file cabinets is disclosed constructed with bullet-proof armor plates mounted on an interior support frame which protects one or more persons inside the shelter both from being discovered by and being harmed by an armed intruder in the case of a home or office invasion. The shelter can be assembled and disassembled on site from the interior of the structure providing for the ability of one or more persons protected inside the shelter to detach the plates if the bullet-proof door to the shelter, which is locked from the inside, becomes obstructed. The interior frame of the shelter has castors which allow the shelter to be moved.

Abstract: The degrees of freedom are increased for the layout for a member (for example, an upper guide or the like that restricts an up-down direction position of a medium) to be disposed above a storage space for storing a paper sheet-shaped medium, and a disposable space for the member is enlarged. A medium storage box having an internal storage space for storing a paper sheet-shaped medium includes an upper installation member (for example, a lid section) that is disposed above the storage space, and a liquid ejection mechanism that ejects liquid from a liquid ejection nozzle. A liquid ejection direction of the liquid ejection nozzle is set in a direction toward a lower face of the upper installation member.

Abstract: A mullion assembly is provided for forming a window assembly, the window assembly comprising a first window frame and a second window frame coupled to a monolithic mullion core such that a distal portion of the first window frame is in contact with a proximal surface of the mullion core and a proximal portion of the second window frame is in contact with a distal surface of the mullion core. The mullion assembly further comprises a first and second female connector on a respective first and second side of the mullion core. A plurality of separate compartments is defined along a length of the mullion core vertically between the proximal and distal surfaces and laterally between the first and second female connectors. The mullion assembly further comprises first and second male connectors configured to engage the female connectors and seal the first and second sides of the mullion core.

Abstract: The present invention relates to a fastening means (1) for mounting doors or windows, which comprises frames (2) intended to be mounted in a mounting direction (26) in an opening (3) in a wall, a floor, a ceiling, said fastening means (1) comprises a bracket (5) intended to be mounted on the backside (8) of the frame (2) and at least one screw or bolt (9), intended to be screwed into the end portion (4) of the opening (3), said bracket (5) comprises at least one locking slot (6), said screw or bolt (9) comprises at least one locking projection (11) intended to be pushed into said locking groove (6) for fastening the frame (2). Said locking slot (6) consists of a groove (12) for example an U-formed groove, extending mainly in the longitudinal direction (22) of the frame (2), said locking projection (11) comprises the head (10) of the screw or bolt (9) or a head (10), which is covered by a casing (14) e.g.

Abstract: The present invention discloses an integrated multi-function window in the technical field of building material, which overcomes the disadvantages of the existing windows, including complicated structures and time, labor and cost consuming double constructions. The integrated multi-function window includes a first window frame having a first window. A first window cover is mounted at the upper part of the first window frame and first telescopic curtain cloth is located within the first window cover. One side of the first window frame is fixedly connected to the second window frame having a second window. The position of the second window is corresponding to that of the first window. The integrated multi-function window has a simple configuration and multiple functions and is of a low cost and improved reliability.

Abstract: An encapsulated glass assembly includes a plastic frame having at least three sides and corners, with the frame having a channel extending within its outer frame surface that includes a lower wall portion connected to a side wall portion. The outer frame surface further includes at least one upper wall portion extending from the side wall portion and extending along at least one side of the frame, each one of the at least one upper wall portions further defining a portion of the channel as a C-shaped channel. A glass panel coupled to the frame is retained within the C-shaped channel along at least one side of the frame such that the edge of the panel is adjacent to the side wall portion. An encapsulant having a Shore hardness less than the frame is bonded onto the panel and onto the frame to secure the panel to the frame.

Abstract: A viewing assembly specifically, but not exclusively, structured for viewing through a solid, glass or transparent material panel includes a housing and an outer section collectively disposed in an operative position, respectively on and inner and outer surfaces of the panel. Inner and outer ends of the housing respectively include aligned first and second viewing apertures. A viewing member, structured for restricted, unidirectional viewing there through, is disposed within the housing in aligned relation to the first and second viewing apertures, and may be in the form of a one way mirror. The outer section is disposed in visually covering relation to the inner end of the housing and includes a third viewing aperture, wherein the first, second and third viewing apertures and the viewing member are collectively disposed in visually aligned relation along a predetermined line-of-sight extending through the panel from an interior to an exterior thereof.

Abstract: Included are: a screen member 33: a fitter member 35 attached to a side end 33a of the screen member 33; a rail member 91 having a first chamber 91a and a first slit 91b joining the first chamber 91a, the first chamber 91a accommodating the side end 33a of the screen member 33 and the fitter member 35 passing through the first slit 91b to thereby allow the rail member 91 to hold the screen member 33 movably in a longitudinal direction of the first slit 91b; and a retainer 93 for retaining the rail member 91. The rail member 91 is compressively deformed in the width direction of the first slit 91b by the retainer 93, and the width of the first slit of the compressively deformed rail member 91 is narrower than the thickness T1 of the fitter member 35.

Abstract: A shade channel system and method of use to provide interchangeability of use with a zippered shade and a regular or blackout shade, together with improved efficiency of installation. A guide channel accepts a shade and is configured with a tensioning mechanism to allow the guide channel to be retained at varying depths within a base channel. The system is suitable for providing polished, uniform looks throughout a room and allowing for use of standard-sized shades by allowing the guide channel to be placed at an adjustable depth within a base channel.

Abstract: A clutch cover for a roller blind clutch. The clutch cover comprises a clutch barrel portion mounted upon and extending outwardly from a first side of a backing plate, a cover ring and one or more indexing locators to fix the position of the cover ring relative to the backing plate when the cover ring is releasably secured about the backing plate. The cover ring includes a chain guide and is releasably securable about the backing plate such that the cover ring encompasses the backing plate. The indexing locators prevent relative rotational movement between the cover ring and the backing plate when the cover ring is releasably secured about the backing plate. The indexing locators permit the chain guide to be positioned at a plurality of angles relative to the backing plate.

Abstract: An electronically-enhanced climbing structure has a first lower and a second higher horizontal surface provided at different heights above ground level to support weight of a user, enabling the user to attain a working position above ground level, electronic circuitry comprising a microprocessor mounted to the climbing structure, a first pressure sensor on the first, lower horizontal surface, coupled to the electronic circuitry, a second pressure sensor on the second, higher horizontal surface, also coupled to the electronic circuitry, and an alert output mechanism. The electronic circuitry receives signals from the first and the second pressure sensors at different times, processes the signals to determine safe use of the climbing structure, and, in an event of unsafe use, triggers the alert output mechanism to issue an alert of unsafe use.

Abstract: An air conditioning crane boom assembly having a number of mounting feet that removably secure the assembly to the rungs of a stepladder. Braces extend from these feet to a boom that extends horizontally away from the rungs of the stepladder. A pulley or a winch may be attached to the base of the boom, near the rungs of the stepladder, and the boom extends away from the stepladder to facilitate safe and stable lifting of loads such as air-conditioner components.

Abstract: An equipment tower having a ladder formed of a plurality of ladder segments each joined to a respective tower segment by a pivotal connection prior to the tower segments being stacked during erection of the tower. The pivotal connection provides a degree of freedom of movement which facilitates the interconnection of adjoining ends of the ladder segments after stacking of the tower segments. Additional accommodation of as-built spacing of the adjacent ends of the ladder segments may be provided by a connecting segment. The pivotal connection may be a rod inserted through a rung of the ladder and supported by a support assembly attached to the tower segment.