Abstract: Flat-sheet membrane filter assemblies require open space around equipment to form a viable path for an internal recycle or roll pattern. Creating a dedicated roll pattern for individual filter assemblies is space intensive and imposes process constraints on tank dimensions. A hollow wall or series of pipes forms a recycle wall designed to consolidate roll patterns and reduces space requirements. The recycle wall is designed such that the structural components also serve as a mixed liquor distribution system for the necessary roll pattern. Fixed vertically oriented conduit and sectional channel pieces allow for easy access and removal of membrane filter assemblies installed side by side. Feeding mixed liquor, air and or influent to the bottom of filter assemblies via submerged conduit improves process efficiency when coupled with return channels spaced not more than 10 feet away and above assemblies.

Abstract: A thread spool holding device has a plastic base plate that holds a series of preferably soft plastic spindles that can be introduced or removed from the base and can be arranged as needed by sliding along a slotted track of the base. Each spindle can hold a threaded spool and has a cross sectional configuration for gripping the center hole of the spool. The spindle ends can also hold a bobbin in tandem with a thread spool.

Abstract: In a sewage treatment system, microconstituents, including personal care products and pharmaceutical materials, often difficult to degrade biologically, are removed by supersaturating the untreated wastewater feed with ozone. This breaks down refractory microconstituents into more readily biodegradable materials, subsequently treated preferably in an activated sludge membrane bioreactor process. The oxygen byproduct of ozonation is utilized by feeding the oxygen into an aerobic part of the plant to meet a portion of the biological demand, thereby increasing efficiency of ozone use in the process.

Abstract: The present invention is a device that provides protection for a window from exterior fires which might ignite combustibles by radiation through the glass and/or break the glass and allow direct flame impingement, and also operates as a non-solid shutter or shade allowing privacy and shade. The shutter consists of metal or other noncombustible screen, mesh or slats spaced or pierced so that they allow some light to penetrate for shade control but protect the window glass from heat radiation and flying debris created by an external firestorm. The shutter can be raised and lowered manually, or with mechanical assistance, as by means of a chain lift or other roll-up/down mechanism for shade and privacy control, but will drop (close) automatically when released by a fusible link of the appropriate temperature setting to provide the fire protection.

Abstract: An adjustable table is easily moved from coffee table height to dining table. The weight of the table top is supported by a pneumatic cylinder, preferably exerting a force slightly greater than the weight of the table top. The cylinder connects to a much larger air tank, so that essentially constant lifting force is exerted. For stability of the table top a guide mechanism firmly retains the table against rotation, side movement or tilting. A unique locking mechanism retains the table at a selected height and is easily released with a finger lever.

Abstract: A skateboard wheel truck assembly has a suspension including a non-circular base bushing with wings or arms extending laterally outwardly, providing for increased stability and control and reduction of wobble in use of the skateboard.

Abstract: A snowshoe of molded plastic material has a tail section with greater flexibility than the main body section, thereby allowing the tail to give and deform as the snowshoe tail is engaged against the terrain during the gait of the user. At the same time, the tail is stiff enough to provide flotation needed when the full weight of the user is on one snowshoe fully engaged against terrain, such as soft snow.

Abstract: A locker lock fits a standard locker door three-hole door prep, with all electronics contained in a single housing mounted on the front of the locker door and a latch device behind the locker door. The locker lock preferably includes a keypad to allow rotation of a handle or knob, and also includes a manager's override and power jump terminal.

Abstract: An aluminum floor for fencing has an improved friction surface with traction-enhancing grooves and is configured to reduce noise. Aluminum extrusions forming the floor define a flat surface but with series of parallel grooves separated by non-grooved spaces. In a preferred embodiment the grooves are essentially square cut. The grooves and spaces between the series of grooves are configured so as to allow sliding on the floor with the essentially flat soles of a user's fencing shoes when desired, but so as to grip the soles with significant friction when the shoe is heavily weighted causing the sole to deform down into the grooves. The fencing floor is intended to lie over an existing floor, as a series of easily connected floor sections. Rubbery sheet material is secured to the bottom of the fencing floor, preferably in transverse strips, directly beneath each joint and preferably at additional locations.

Abstract: An optionally deployable side seat for a baby stroller, to seat a second child, is secured by hand-operated connectors to nearly any baby or child stroller, without tools. The side seat faces to the side of the stroller and has a deployed position in which two wheels mounted in tandem on the side seat frame contact the pavement. For stowing the side seat remains on the stroller, and two quick-release lockable joints, in the position of arms on the side seat, are released and raised upwardly, which folds the seat bottom up against the seat back and raises up a lower frame portion that supports the wheels.

Abstract: A battery-powered miniature wireless headset is worn as a single earring or as a pair of earrings. The headset communicates with a phone or other host over a bidirectional wireless communication link allowing hands-free operation. The wireless earring headset is comprised of an electronics module (18), a speaker assembly (17), a microphone assembly (16), an antenna (68), a battery (62), user interface devices such as a switch (28) and LED (30), and an attachment means employing either a clamp or a pierced earring post (24) with clutch (26). The electronics module, which may be a single chip, comprises a wireless transceiver, a processor with associated memory, an audio codec, power supply electronics, and other components. In use the device is attached to the pinna of the wearer's ear (99) using either a clamp or a post inserted through a pinna piercing and secured by a clutch or nut.

Abstract: A bicycle light system has front and rear (white and red) lights with mounting brackets to secure on a bicycle helmet. A rechargeable battery is contained in the rear light casing, with an electrical cord extending between the front and rear light casings. The front light casing has controls for both front and rear lights, which can include different power levels and preferably a flash mode for the front light. 360° visibility preferably is provided via the front light, which projects colored light, such as amber, toward the sides. In a preferred embodiment the battery is rechargeable using a micro USB connection, a serial bus configuration widely used for cell phones, so that the battery will ordinarily be rechargeable via a cell phone recharging cable or a connection to a computer. Helmet mountings for the front and rear light casings have a quick-release feature enabling the lights to be easily and quickly removed from the helmet, such as for recharging.

Abstract: An automatic pistol essentially consists of an immovable barrel, a breech with a firing pin and a cartridge extractor, a breech frame, a spring-loaded device for the removal of gas with a gas piston and a gas cylinder, a firing mechanism and a magazine. The barrel is fitted with an end piece, which is located in the lower part of the rear end of the barrel. The design of the breech allows for the displacement of its front part downwards, when the breech is in its front end position. The front part of the breech is fitted with side locking lugs. The corresponding locking grooves are located in the cavities on the end piece of the barrel. The gas piston has an opening for ejecting the cartridge casing. In the course of the backward movement, the gas piston unlocks the breech and draws it back. In the forward movement, the breech is carried forward and pushed downwards. The gas cylinder is located at the front part of the barrel and encompasses the barrel. Along the length of the barrel gas ducts are fixed.

Abstract: In a sewage treatment plant with a membrane bioreactor (MBR), raw untreated or partially treated wastewater (influent) and/or mixed liquor in the intensified process is superoxygenated. In a preferred form of the process the influent is superoxygenated such that membrane air scouring requirements are reduced. Influent may be fed to a swing zone where denitrification and nitrification occur simultaneously through process control. In one embodiment superoxygenation is conducted in an internal recycle stream of the mixed liquor, with oxygen content supersaturated preferably to over 300 parts per million. Due to the active evolution of oxygen gas from the supersaturated stream, occurring preferably by seeding the supersaturated stream with air bubbles, the supersaturated oxygen can serve the dual purposes of meeting process oxygen demands and providing part of air scouring requirements for the membranes.

Abstract: A device is added to or built into a subject large vehicle, such as a large motorhome. The device provides for the driver's use either one or two retracting steps to facilitate the driver's entrance into or exit from the subject vehicle. Since these steps retract for travel, they are able to extend far enough beyond the side of the subject vehicle to allow the driver's weight to be directly above each step in stair step fashion rather than vertical ladder fashion. The device makes motorhome driver's side doors safer and more usable for less athletic people and the elderly.

Abstract: A combination lock comprises a bolt which is withdrawn by depressing a bolt pin which is shielded by rotating discs having a movable disc pin within them. A selector pin attached to a dial is provided for engaging in selector holes in the discs and aligning the disc pins with one another and with the bolt pin, with provision for pushing inwardly the disc pin on the outer disc and urging the other disc pins aligned therewith towards the bolt pin such that it is depressed and/or withdrawn. The discs have a weight attached at their circumference such that, during code setting, changing the position of the weight changes the relative angular position of the disc pin. When pressure is released from the mechanism, springs return the selector pin and the disc pins to their original positions and the weights on the discs fall, thereby rotating the discs and automatically scrambling the code.

Abstract: Methods for producing a polyols and polyurethanes are described. The polyols described herein can be produced directly from crude glycerin or through liquefaction of lignocellulosic biomass using a solvent comprising crude glycerin. The polyols produced in accordance with certain aspects may be derived from a significant proportion of renewable resources.