Abstract: A plurality of pairs of inflatable air cells disposed on opposite sides of a longitudinal axis are arranged along the length of a bed. Each of the air cells extends substantially transverse to the longitudinal axis and are supplied with air so that cells on alternate sides are inflated while simultaneously the cells on the other side are deflated. An upper layer of a resinous foam pad is provided on which the patient lies. The pad is provided with a groove along its longitudinal axis for comfort of the patient. The assembly is completed by a covering having an upper sheet member removably attached to a lower sheet member so that when soiled it may be easily removed.

Abstract: A tension measuring apparatus for determining the tension in stretched cables, ropes, wires and the like.

Abstract: Footwear having a pair of slipper or footwear/shoe members joined together. Each member is formed of a flexible upper body and a sole secured thereto about the perimeter. The two slipper or footwear/shoe members are further joined with their soles abutting each other.

Abstract: There is disclosed an improved rowing apparatus which can accommodate a plurality of rowers at the same time and which permits simulating increased speeds in the water. The apparatus has an oblong tank having disposed on each side thereof and spaced therefrom in parallel relationship rowing attachments including seats, oarlocks and oars to accommodate a plurality of rowers.

Abstract: The recording sheet is formed by coating colored sheets with an opacifying compound prepared by mixing an aqueous suspension of polymer particles embodying internal voids dispersed with a water base coating material.

Abstract: A simple and elegant activity center and drawing table is described; the preferred example is for children to use in bed, and consists of a drawing surface mounted on a rectangular frame, which is in turn supported on two boxes. The boxes sit on either side of the legs of a bed-ridden child, and are open on the sides for storage. Rolls of paper on either side of the drawing surface supply drawing paper; a window in the drawing surface and a gravity bar to hold a subject design allow tracing; and a latch-and-pivot behind the frame, in conjunction with hinges between the frame and boxes, allow the drawing surface to be raised to predetermined oblique angles. Alternatively, the surface may sit flat and be used as a table. A lip prevents crayons, pencils, or books from sliding off, and all parts near the front are rounded to prevent injury. All the described mechanisms can be easily manoeuvred by a child while in bed, without adult help.

Abstract: An apparatus for reducing air drag against an apparently flat message surface when the message is intended for day or night viewing from approximately directly in front or behind. Symbols comprising the message, or their backgrounds are inclined backwards as louvers to allow free air passage. The symbols or their backgrounds may be placed on a plane behind and parallel to the apparent message surface, and viewed through hole(s) cut in that surface, with a gap between the two planes allowing air flow. Night-lights above each symbol may be provided to ensure accurate night viewing.

Abstract: An adaptor for connecting industry standard eavestrough downspouts to drainage extensions of a similar or dissimilar cross section and allowing the extension to be pivoted vertically. Such an adaptor is shown with portions having two different cross sections, one capable of fitting outside several industry standard drainage extensions and having a hinge between the two portions. A mating Velcro.TM. loop-and-hook pair is installed on the drainage extension's outer end and at an appropriate place up the downspout. Thus, a downspout with a round, or squared, or rectangular cross section can be connected to an extension with any of these cross sections, making a total of nine permutations and more if minor bending or fitting of further sizes and shapes of downspouts or extensions is undertaken. In the preferred embodiment, the extension can thereafter be raised to a vertical position and separably fastened there.

Abstract: A muffler for internal combustion engines is formed of vertically separable body sections so that the sound absorbing and filter members may be accessed easily for replacement and/or cleaning.

Abstract: A cover for an animal tank is providing having oppositely outwardly facing hooks thereunder. One of the hooks is fixed in position on the underside of the frame, and the other hook is mounted to the bottom of a slide, which is slidably mounted underneath the frame. When the cover is placed on an animal tank and the lock plate is slid outwardly in the frame and the frame is slid in the opposite direction on the top of the tank, the oppositely outward facing hooks engage underneath the interior peripheral shelf of the rim of the tank, securing the cover to the tank.

Abstract: A pair of oppositely directed pistons are reciprocatingly mounted in a cylinder. The cylinder is formed unilaterally with and encapsulated within a tank for receiving compressed air and has an exhaust port at each end and a valve for controlling the flow of air into the tank. Each piston has a head with an aperture and a unidirectional valve for controlling air flow into the cylinder. An air inlet to the cylinder is located between the piston heads. A motor has a drive shaft extending through the air inlet and a transmission connected to the pistons drives the pistons synchronously in opposing, reciprocating strokes.

Abstract: The present invention is directed to a discharge tube for use with a display device which is simple in structure and which can be mass-produced satisfactorily. Further, the discharge tube for display device of the present invention can be increased in resolution and can be made large in size with ease. Furthermore, the discharge tube for use with a display device of the present invention can be made inexpensive with ease. A pair of memory elements (Ma), (Mb) having memory electrodes (3a), (3b) formed of conductive layers having a plurality of apertures (5a), (5b) arranged in an XY matrix form and in which the whole surface of the memory electrodes (3a), (3b) are covered with insulating layers (4a), (4b) are laminated such that corresponding apertures (5a), (5b) covered with the insulating layers (4a), (4b) are communicated with each other to thereby form discharge cells. all of which are sealed into a tube body in which a discharging gas is sealed.

Abstract: A safe, hygienic and effective device for caring for the interior of the mouth is presented. The system includes easily interchangeable accessories for a brushing device that allows it to function also as a polisher, washer, massager/stimulator, oral irrigator, oral syringe, lubricator, and protector of the teeth and gums. In the example presented, water-driven motors housed inside flexible material formed so that it is capable of fitting comfortably inside the human mouth drive heads in an up-and-down or rotating motion that brush or polish or massage/stimulate or irrigate the interior and exterior of all teeth, top and bottom, and gums, simultaneously, while also supplying fresh-water lubrication and paste or polish or mouthwash or the like and also removing exhaust fluids and exhaust substances from the mouth by a vacuum/suction or pressure or gravity action.

Abstract: The tray assembly includes a body having a front end portion, a rear end portion, a base and a pair of side walls disposed at right angles to the base. An adjusting assembly is associated with the base and the side walls to adjust the horizontal width of the tray assembly so as to accommodate merchandise products of various widths.

Abstract: A container is supported floating in a liquid by floats; an inflow gate is loosely fitted about the container. The inflow gate has a sloping face for introducing liquid into the container. A discharge is provided for discharging the liquid accumulated in the main body bath. Floating substances collected on the sloping face of the inflow gate are raked and pushed into the main container by a raking machine arranged on the sloping face of the inflow gate and a pressure screw arranged on the sloping face of the inflow gate and a pressure screw arranged in the main container.

Abstract: A two cycle interal combustion engine constituting of upper exhaust ports and a lower exhaust port provided on the upper and the lower of the level of the upper edge of scavenging ports, respectively, and having only the upper exhaust ports connected to a cleaning device. As a result of that, exhaust gas containing large amounts of hazardous components is mainly discharged from the upper exhaust ports and, because the exhaust gas can be cleaned concentratively, the decontamination efficiency of exhaust gas is good.

Abstract: An apparatus for the exercise and relaxation of small animals having a tubular body which is open at each end for entering and exiting of the animal. The apparatus is suspended so that it hangs in a generally horizontal manner. The interior surface of the tubular body has a texture that provides the animal with sufficient traction to walk on, while the exterior surface is provided with a means that also facilitates the animal walking on it.