Abstract: A bag dispenser, for separating and dispensing plastic bags where the bottom of one bag is attached to the top of the next bag by perforation lines with a hole therebetween. Preferably the bags are composed of 10% low density polyethylene and 90% high density polyethylene. The dispenser comprises a frame that holds a shaft on which a roll of the bags is placed and includes a shelf below the roll of bags. The shelf has a bag stop on the end of it that intercepts the holes between the bags and causes them to separate along the perforation lines. The shelf is attached by brackets secured with bolts and wing nuts to the frame of existing bag dispensers to backfit those dispensers with the present device.

Abstract: A bag dispenser, for separating and dispensing a series of plastic bags where one end is attached to the top of the next bag by perforation lines with a slot therebetween. The series of bags are dispensed from a device comprising a wire frame formed into channels to support the core that the series of bags are rolled onto. The channels allow the core to rotate in place but restrict its linear movement to the vertical direction. The dispenser has two braking devices, a braking bar underneath the roll of bags and a pair of fingers that are attached to the channels to engage the core. The braking bar is positioned transversely to the series of bags so that it supports them. The pair of fingers does not engage the core until the number of bags on the core has decreased and the core has begun to descend. The two braking devices work in combination to retard the rotation and dispensing of the bags and thus to apply a tension to the series of bags.

Abstract: A rocket motor assembly is provided with multiple pintle nozzles and a controller for adjusting the pintle position in the nozzles to generate a thrust differential, while maintaining the combustion pressure at equilibrium pressure by maintaining the sum of the throat areas of all of the pintle nozzles constant, for example. In this manner, proportional thrust control and very high response times are achieved. The controller also includes a pressure correction circuit that senses any difference between the actual combustion chamber pressure and the selected equilibrium pressure upon which the thrust differential was based, converts that to an error value, and sends a command signal to each pintle actuator so that each pintle position is adjusted an equal amount to compensate for the sensed pressure difference and maintain the combustion chamber pressure at the selected equilibrium pressure.

Abstract: There is disclosed improvements in oscillating reeds particularly for use in generating a sweeping or oscillating air flow pattern. The oscillating reeds of this invention are constituted by a plurality of spaced apart resilient reed elements which, preferably, are made from graphite fibers bonded together by an epoxy resin matrix reinforced by a scrim of fiber glass. To minimize the effect of torsion and/or forces which can cause the reed elements to buckle and hence create noise, a plurality of undulations are formed in the graphite strip. Thus, the oscillating reed according to the present invention offers the following four major advantages, (1) reduction in noise from buckling, (2) amplitude modulation, i.e. oscillation amplitude insensitivity to wide ranges of flow rates (3) easier starting of oscillation, and, (4) improved fatigue strength.

Abstract: A transmission controller that includes a series of fluidic comparators receiving power signals from selected ports in a manually-actuable range selector valve. Hydraulic signals representing engine throttle position and transmission output speed are beamed against each comparator main flow stream to switch the flow between a primary collector port and alternate collector port. Comparator outputs are amplified and applied to the end faces of spool valves that provide hydraulic actuator force for the transmission clutches.

Abstract: A fluid flow control element is constituted by a fluidic amplifier having an interaction region shaped to provide side walls leading to a pair of fluid flow outlets. The fluid flow inlet for the fluidic amplifier has positioned adjacent thereto at least one control fluid passageway, and the flow of fluid to the outlet passages is controlled by at least one pivoted valve or flap element pivoted between two positions for controlling flow fluid from the fluid inlet to a selected one of a pair of fluid flow passageways or outlets. In the preferred embodiment the fluid flow inlet and outlet and the interaction chamber are such that the fluid pressure in the chamber is always above any pressure in the load passageways and fluid from the fluid flow inlet flows out from the chamber through the control passage.

Abstract: An improved flueric cartridge initiator (FCI) comprising a heat resistant or composite material resonance tube, a hardened high strength thermal disk and copper seals, in combination with an ignition train is made safe utilizing specific fluid dynamic phenomenon associated with the operation of the resonance tube. The present device uses simultaneous dual fluid inputs to create a Boolean AND logic element in order to reduce inadvertent firing functioning of the FCI.

Abstract: A flueric cartridge initiator comprising a heat resistant or composite maial resonance tube, a hardened high strength thermal disk and copper seals, in combination with an ignition train comprising potassium dinitrobenzfuroxane initiating charge, a double-base flake propellant transfer charge, and an extruded multi-perforated main charge propellant.