Abstract: A system and method for recovering high-quality biomethane (RNG) from biogas sources is provided. The gas stream is compressed and liquids are separated from the gas stream at elevated pressure and reduced temperature. The compressing is performed using a plurality of compressors operating in parallel with common control set points. The system and method improve upon conventional practices and yield a biomethane product which meets strict gas pipeline quality specifications. Additionally, the system and method are an improvement to the overall methane recovery efficiency for biogas processing facilities.

Abstract: A flood defense system for homes, structures and other buildings consisting of a watertight film (16) adhered by a sealant tape (10,12,14). The film (16) has high elongation properties to stretch and fill gaps, cracks, and other paths of liquids into buildings. The sealant tape (10,12,14) has high tack properties and is thick such that it can conform to textured surfaces which are often found on exterior walls. Together the sealant tape (10,12,14) and film (16) form a watertight seal which can be rapidly applied and later removed with no modification to existing building.

Abstract: An HVLP spray system and toolbox design offers a fully integrated system that is durable on the jobsite, has internal storage for all basic tools needed to do the job and offers integrated user features specific to the application.

Abstract: A common method of retaining spray nozzles in texture applicators is to capture the nozzle by a rubber cap which is stretched over a retaining flange on the applicator's sprayhead. The effort required to stretch an elastomeric nozzle retainer (cap) 10 over the retaining flanges 12 on the sprayhead 14 is reduced by providing features facilitating the use of a prying tool 16 to amplify the user's effort. Flange relief flats 18 accommodate the natural, temporary inward deflection of the cap 10 during installation.

Abstract: An HVLP spray gun includes a coaxial combination air valve assembly 30 for controlling total air flow as well as pattern air flow which is frictionally retained in the gun body 12.

Abstract: An excavation cleanup device is provided that includes a frame configured to support a collection tray that defines a through opening with a fence extending therearound. The through opening is configured and arranged to admit excavation devices such as augers. The collection tray has a low profile configuration that permits it to lie flat on the ground during the excavation process, and further includes an outer rim that cooperates with the fence to aid in the retention of materials deposited on the collection tray by the excavation device. The low profile construction of the collection tray also serves to minimize the risk of interference between the excavation cleanup device and the device used to perform the excavation process. The excavation cleanup device further includes a pair of handles and a wheel, to facilitate ready transportation of the excavation cleanup device from one site to another.

Abstract: A wrecking tool is provided that includes a handle having an attached demolition head which can be oriented in various ways to perform work, such as by imposition of a moment and/or a force, on one or more selected structural elements in response to a force applied to the handle. The demolition head is rotatably attached to the handle so that the position of the demolition head with respect to the handle may be adjusted as desired, and the demolition head includes two tines having a wedge shaped configuration and disposed in a spaced apart arrangement with respect to each other.