Abstract: Corrugated fluid-tight membrane fluid-tight wall (1) including two series of parallel corrugations forming a plurality of nodes (5) at the crossings of said series of corrugations, wave reinforcements (11) being arranged under the corrugations (3) of the first series of corrugations (3), two successive wave reinforcements (11) in a corrugation (3) each including a hollow sole (15) and a reinforcement portion (16) disposed above the sole (15), the two wave reinforcements (11) being developed in the corrugation (3) on either side of a node (5), a connecting member (13) at the level of the node (5) being nested in the soles (15) of said two wave reinforcements (11) in such a manner as to assemble the two wave reinforcements (11) in an aligned position.

Abstract: A device for measuring the forces exerted by each leg, particularly during ambulatory activity, including at least one assembly provided with a powered treadmill in a frame consistency of a rigid structure engaging the various portions of the treadmill for drawing the treadmill. The rigid structure is supported by force measuring sensors secured to a common ground-engaging plane for measuring vertical and tangential forces.

Abstract: Apparatus for weighing a person that is confined to a bed that includes a series of modular units for supporting a bed frame and sensors associated with each of the modular units that are capable of performing in combination a weighing function.

Abstract: An instrument for measuring a muscular force particularly suited for the re-education and/or development of a muscle belonging to an upper and/or lower limb of the human body. A linearly displaceable element is coupled to a displacement device operable to continuously reciprocate the element with adjustable speed and travel. The displacement element is mounted such that a part of the human body can exert a muscular force (F1) upon the element. For example the element can be formed with one or more impressions to create an artificial climbing grip. The displacement device is coupled to a control center capable of, displaying a force threshold corresponding to a force of defined and variable intensity, operating the displacement device if the intensity of the force exerted on the element (F1) is greater than or equal to the displayed threshold value, measuring the force supplied, measuring the displacement, speed and travel of the element, measuring the duration of the force (F1).

Abstract: In a method for harvesting fruits, berries and the like by means of shaker members and in particular for gathering grapes in whole bunches, the shaker members are subjected to a succession of motion stages comprising a high-speed stage, a practically zero speed stage at least at one end of travel of the shaker members and an intermediate stage having a high speed gradient. The speed in the high-speed stage is at least 2 m/s, the time-duration of the practically zero speed stage is at least 30 ms and the speed gradient in the intermediate stage is at least 200 m/s.sup.2.

Abstract: A hydraulic motor of variable cubic capacity with retractable partitions sed in radial grooves in a rotor. The partitions are each integral with a guide pin trapped in an endless cam groove of approximately ovoid shape in a surface stator. The partitions also pass through radial grooves in a sleeve housed in a circular groove in the rotor in order to slide therein parallel to the axis of the motor. A reaction member passes through an aperture in the stator in order to remain in frictional contact with an end surface of the sleeve. The driving force comes from oil pressure in a circular groove defined between the end surface of the sleeve and the surface of the stator. The sleeve and reaction member slide jointly.

Abstract: This invention relates to the production of carbon black by means of an incomplete air-acetylene combustion reaction.The apparatus comprises heating means arranged around an acetylene jet and arranged to cause heat cracking of the acetylene molecules prior to the combustion reaction.The invention is applicable in particular for forming linings for facing moulds or the like used in metallurgy or glass-making, for forming insulating facings on conveying elements and for lubricating drawing heads.