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 for manufacturing a window covering for an architectural opening is disclosed. The covering including a support, at least one vane, and at least one operating element. The method for manufacturing the covering includes extending the vane across the support; extending the operating element along a length of the support, and coupling the covering to a roller for selective rotative movement for extending and retracting the covering during use. The operating element being movable with respect to the support. In use, an upper portion of the vane is fixed with respect to the support while a lower portion of the vane is fixed with respect to the operating element so that the lower portion of the vane is movable relative to the upper portion by moving the at least one operating element.

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 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 for manufacturing a window covering for an architectural opening. The method includes operatively coupling a support material and at least one operating element to a roller for selective rotative movement during use. The at least one operating element extending along at least a part of the length of the support material. The method also includes extending a plurality of vanes relative to the support material. Each vane including an upper edge and a lower edge, wherein the upper edge of each of the vanes is fixed against movement relative to the support material, the lower edge of each of the vanes is fixed against movement relative to the at least one operating element, and the lower edge of each of the vanes moves relative to the upper edge of each of the vanes by moving the at least one operating element.

A method for manufacturing a central underbody portion of a structural body of a motor vehicle to delimit a bottom of a passenger compartment of the vehicle. The method includes assembling a floor of the central underbody portion, attaching an integral central profile to the floor, arranged in a longitudinal direction of the vehicle and having a length dependent on a length of the central underbody portion in the longitudinal direction, and assembling at least one end piece forming an extension of the central profile. The end piece has an interface providing a connection and a function of absorbing and transmitting forces with a structural portion of the body that is separate from the central underbody portion and/or with the floor. The attaching includes adapting the length of the central profile as a function of the length of the central underbody portion in the longitudinal direction.

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 detection and removal of auxiliary material suitable for the manufacturing of an aircraft element includes providing an auxiliary material having at least one detection label, scanning the element with a label detector suitable to detect the detection label once the element has been manufactured, detecting the auxiliary material by means of a warning signal emitted by the label detector and removing the auxiliary material from the element. An auxiliary material suitable for the manufacturing of an aircraft element includes a detection label.

A system for manufacturing homes is provided. An embodiment includes a final assembly facility located proximal to a subdivision where a plurality of the custom homes is to be situated. The final assembly facility is for receiving the planar sections from the sub-assembly plant and for constructing the homes from planar portions according to the production schedule.

An apparatus and associated method for manufacturing a window covering for an architectural opening. The apparatus includes a support structure handling assembly, an operating element handling assembly, and a vane handling assembly. The handling assemblies process the respective materials to an assembly station to attach one portion of a vane to the operating elements, and another portion of the vane to the support structure, allowing movement of one portion of the vane relative to other portion of the vane.