Abstract: A duct for aircraft use which has ease of use and will resist degradation over time. Silicone impregnated cloth is supported by a nylon helix and covered with a protective braiding of KEVLAR.RTM., a commonly used polyamide fiber. The resulting tube can be strung through tight openings. The duct is equipped with a flexible flange for secure engagement. The flexible flange can be collapsed to reduce the cross sectional area for fitting through narrow openings.

Abstract: Described herein is an internal mixer of the type including a mixing chamber rotatably accommodating mixing rotors therein, a hopper frame erected on the mixing chamber, a charge hopper provided on one lateral side of the hopper frame for charging a mixing material therethrough, and a floating weight provided in the hopper frame for upward and downward movements therein, the floating weight being held in an upper lifted position when charging a mixing material into the mixing chamber and then lowered into a pressing position in a mixing stage to apply pressure on the charged material in the mixing chamber, wherein the floating weight is dimensioned to have an axial length sufficient for closing an inlet opening formed in the side wall of the hopper frame in communication with the charge hopper, when in the lower pressing position, and lift means for lifting the floating weight up and down in the hopper frame is provided separately from a pressing means with a function of pressing the floating weight resilient

Abstract: The invention is directed to an improved mixing arrangement for securing the blade to the shank of a mixing apparatus. The blade includes a borehole which overlies and surrounds a substantial portion of the shank so as to substantially reduce direct abrasive contact of the shank. Accordingly, the shank has longer life. Further the blade is mounted and secured by a single bolt which when unsecured allows the blade to be axially moved off the shank from an upright position which is most easily accessible by a person performing maintenance on the mixing apparatus.

Abstract: A windscreen wiper assembly with translational motion is adapted to wipe the rear window of a motor car. All the parts of the windscreen wiper, including its driving motor and mechanical parts for imparting a reciprocal translational motion to the wiper blade, can be mounted internally within a spoiler. The spoiler is externally mounted to the car in parallel with and above the upper horizontal edge of the rear window.

Abstract: A toothbrush formed of a handle, a neck and a bristle head. In order to allow the bristle head to move out of the way in the event of excessive brushing pressure being applied during toothbrushing, an elastic segment is provided between the handle and the bristle head. Injury to the gums, damage to the teeth and possibly to the tooth-holding means can be averted by the elastic flexure of the bristle head. The elastic segment is formed by one or more clearances, slots or slits at least partially filled with elastic polymeric/copolymeric plastic material.

Abstract: The invention relates to a mixing device with a mixing vessel which can be pivoted by 180.degree. between a starting position and a mixing position. The vessel part which is permanently connected to the pivot shaft includes an extraction mechanism by means of which any dust-laden gases present in the vessel can be extracted before the vessel is opened. A preferred further embodiment of the invention facilitates the delivery of protective gas to the mixing vessel.

Abstract: A toothbrush comprising a head having a flat surface facing upwardly, the head joined to a handle. The tufts of bristles are arranged in two groups of rows, each row extending transversely of the head. The rows of the first and second groups alternate with each other along the longitudinal axis of the head. In the first group, the two laterally outermost tufts of each row tilt sidewise towards their respective nearest side of the head, this tilt being about 12 degrees. The middle tuft of each of the second group extends substantially vertically upwardly from the head. The laterally outermost tufts of the second group tilt laterally inwardly toward each other by about 8 degrees. The tufts define three functional groups of tufts. The tuft arrangement is such that the cleaning action is substantially independent of any particular brushing technique employed by the user.

Abstract: A swimming pool vacuum cleaning apparatus having a flexible platform, including an apertured central portion adapted for interconnection with a suction line, a pair of outboard roller assemblies for maintaining the end portions of the platform in a spaced relationship with the pad bottom and a pair of inboard roller assemblies which are readily vertically adjustable relative to the platform so that the spacing between the central, suction portion of the platform and the pool bottom can be quickly and easily adjusted during the pool cleaning operation. The inboard roller assemblies as individual units can also readily be attached to certain types of existing cleaning apparatus to provide an improved vertical adjustment feature.

Abstract: The disposable toilet seat wipe apparatus of this invention includes a pre-moistened, cleansing pad within a carrying container having a pair of component sections separable one from another, and by a pull-apart action, for example. The cleansing pad is initially stored in one of the two sections, and is coupled with a rod extending from within the other section. As the two sections are separated, an inner lip of the first section contacts with the pad to "blossom" it outwardly, as the sections continue to part. The pre-moistened cleansing pad so deployed can then be used in wiping the seat.