Floor covering, made of floor elements, which, at least at two opposite sides, comprise a male and a female coupling part, which allow that two of such floor elements can be interconnected at the respective sides at the respective sides by pushing one of these floor elements with the associated male coupling part, by means of a downward movement, home into the female coupling part of the other floor element, wherein at least one of said coupling parts, either the male coupling part or the female coupling part, is made as least partially in a filled synthetic material composite, such as extruded wood.

A floor covering, made of floor elements, which, at least at two opposite sides, include a male coupling part and a female coupling part, which allow that two of such floor elements can be interconnected at the respective sides at the respective sides by pushing one of these floor elements with the associated male coupling part, by a downward movement, home into the female coupling part of the other floor element. At least one of the coupling parts, either the male coupling part or the female coupling part, is made at least partially in a filled synthetic material composite, such as extruded wood.

A floor covering, made of floor elements, which, at least at two opposite sides, include a male coupling part and a female coupling part, which allow that two of such floor elements can be interconnected at the respective sides at the respective sides by pushing one of these floor elements with the associated male coupling part, by a downward movement, home into the female coupling part of the other floor element. At least one of the coupling parts, either the male coupling part or the female coupling part, is made at least partially in a filled synthetic material composite, such as extruded wood.

A sludge digester including a vessel and floating cover. The vessel includes a sidewall and an interior volume configured to receive and contain sludge. According to one embodiment, the cover comprises a frame structure that is constructed and arranged to form a skirt member formed at a periphery of the cover and extending downwardly into the vessel, and a continuous ballast ring attached to a lower portion of the skirt member and configured to form a trough member with an interior surface of the skirt member. The sludge digester may also include a guide system coupled to the sidewall and the skirt member and configured to allow vertical displacement of the cover with change in volume of at least one of a gas and a sludge contained in the vessel beneath the cover.

A ventilation hood is mounted to an underside of a cabinet by left and right support brackets each including a main body from which depend at least one support tab or hanger, as well as a locator tab. The main body is aligned on the cabinet, while the locator tab appropriately spaces the support bracket from an upstanding rear wall. Thereafter, the ventilation hood is positioned so the support tabs are received in slots formed in a top panel of the hood and, upon sliding the hood rearward, the hood rides upon ramped or tapered surfaces of the support tabs to position the hood against the cabinet while hanging the hood from the support tabs. Thereafter, the support tabs are bent to retain the ventilation hood in an operational position. Employing the distinct aligning, positioning and hanging structure enables a single person to readily mount the ventilation hood.

A support for a moveable office wall is disclosed, the support including but not limited to a plurality of support sections, wherein the plurality of support sections are connectable to form the support, wherein each of the plurality of support sections comprises an inner connecting surface for joining with another inner connecting surface of another support section.

A roofing, cladding or siding product which is light weight, easy to install, durable, and resistant to environmental wear includes a module that can be used to form a weatherproof covering over top of a building surface. The module can also form a weatherproof covering, and be used as part of a thermal energy recovery or removal system. The module can also form part of a thermal energy recovery system that includes an array of solar cells to generate electrical energy.

A nut to be used as part of a fastener to be used in multiple ways in various industries or methods has a drive mechanism and stud extending from the drive mechanism with a threaded bore. In addition the nut can be specifically used as a method and as part of special fastener that can be used to join cut, hard-wood members, other naturally occurring manufactured mat members or synthetically man made members, referred to as timber(s) or laminated, in forming a mat used for heavy construction equipment to run on over ground which is not stable. These mats are commonly referred to as Crane Mats or Laminated Mats in the construction, mining, pipeline, and oil and gas industries among others.

A method of assembling resilient floorboards is disclosed that includes the step of bending an edge of a floorboard during the assembling. The bending reduces the force required for connection of the edge to another edge of a juxtaposed floorboard. The floorboards may be provided with a mechanical locking system for vertical and horizontal locking of two adjacent floorboards.

A modular fuel cell system includes a base, at least four power modules arranged in a row on the base, and a fuel processing module and power conditioning module arranged on at least one end of the row on the base. Each power module includes a separate cabinet which contains at least one fuel cell stack located in a hot box. The power modules are electrically and fluidly connected to the at least one fuel processing and power conditioning modules through the base.