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 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.

An example packaging line to pack profiles having a U-shaped or a C-shaped cross-section includes a first conveyor and a second conveyor to transfer profiles. The first conveyor and the second conveyor are spaced from and parallel to each other. The example includes a head block to move upward and downward. The first conveyor and the second conveyor transfer profiles to an area beneath the head block. The example includes a rotor, carried by the head block, to couple to a first profile transferred by the first and second conveyors with a concave side of the first profile facing upwards. The rotor rotates the first profile such that the concave side of the first profile is facing downwards over a second profile, where a concave side of the second profile is facing upward, and the rotor releases the first profile to insert the first profile into the second profile.

A rear wheel suspension system pivotably attached to a bicycle. The suspension system has an upper link attached to a main frame at a first pivot point, and a rear stay member attached to the upper link at a second pivot point. A lower link is attached to the main frame at a third pivot point, and is pivotably attached to the rear stay member at a fourth pivot point. A shock absorber is pivotably connected to the upper link and to the main frame. An instantaneous center of rotation (ICR) is defined where an upper axis extending through the first and second pivots intersects a lower axis extending through the third and fourth pivots. The ICR displaces along a trajectory from behind the bottom bracket, through an inflection point at which the upper axis and the lower axis are parallel, to in front of the bottom bracket, as the shock absorber compresses.

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.

The present invention concerns an anchoring section for anchoring a pylon of a wind power installation in a foundation, including a carrier portion for fixing a pylon segment for carrying the pylon and a foundation portion for concreting in a concrete mass of the foundation, and the foundation portion has at least one web portion with through openings for reinforcing bars to pass therethrough.

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.

An inverted tube bike frame with bottle opener gusset system is a bicycle frame with the top tube and down tube having a heightened profile with concave sidewalls and a bottle opener gusset strengthening the joint between the seat tube and the top tube. The top tube has a downwardly curved design for added mechanical strength. Other tube-members of the frame have an elongated elliptical cross-section for increased strength and impact damage resistance. The wheel base is wider than that of a standard bicycle adding to forward movement stability and rider comfort. The design of the frame provides added strength and increased frame life with rugged service.

The invention pertains to a thermoplastic fluoropolymer composition comprising: at least one semi-crystalline polymer comprising recurring units derived from ethylene and at least one of chlorotrifluoroethylene (CTFE) and tetrafluoroethylene (TFE), said polymer having a heat of fusion of at most 35 J/g [polymer (A)]; and from 0.05 to 5% by weight, based on weight of polymer (A), of particles of at least one inorganic UV blocker compound, said particles having an average particle size of 1 to 150 nm, said composition being suitable for manufacturing UV-opaque films having outstanding transparency and haze properties.

The furnace of the present invention includes a body of a furnace having a cylindrical shape; a steel shell which is arranged at an inside surface of the furnace; and a lining refractory which is arranged at an inside of the steel shell and includes a plurality of refractory blocks, wherein: each of the refractory blocks includes a hot-face end surface which has a hexagonal shape exposed to a middle of the furnace, and a cold-face end surface which has a hexagonal shape larger than the hot-face end surface, the cold-face end surface being arranged at an outer periphery side of the furnace; the refractory blocks are arranged such that each position of the hot-face end surface is positioned along the radial direction of the furnace at a predetermined reference position; and the refractory blocks are arrayed along the circumferential direction of an inside surface of the steel shell, thereby being stacked in a honeycomb manner.