Abstract: The invention relates to a portable and removable device for positioning and resetting a vanishing point of a perspective drawing which is to be construed on a support. The device comprises at least one stick of a given length and having opposite ends, one of these ends being provided with a transversal pin. The device further comprises a supporting member which can be removably fastened to the support. The supporting member further comprises a device for locking and positioning the stick to the member. The pin at the one end of the stick is positioned at a given distance from the member and used to locate the vanishing point. The device for positioning and locking the stick includes an adjustable abutment adapted to position the stick in a given direction. The abutment is able to remain in such an orientation after removal of the stick and the device for locking and positioning so as to reset the given direction of the stick.

Abstract: A knee orthosis in which the lateral and medial hinges are articulated asymmetrically. The medial hinge, having a first variable axis of rotation, has a first pair of parallel concentric shells in the shape of the segment of a sphere defining a first opening between them, fastened to the medial portion of the thigh cuff, and three rivets, forming a first equilateral triangle having a center coincident with the first variable axis of rotation, fastened to each shell. The medial hinge also has a first shell in the shape of a segment of a sphere designed to be inserted into the first opening, fastened to the medial portion of the shank cuff and three grooves to receive the three rivets.

Abstract: The process for treating waste water uses the combination of a septic tank operating in series with a biological reactor such as a sequencing batch reactor. In this process, waste water is supplied and accumulated in a septic tank. In the septic tank, the waste water and the settling sludge are biologically treated under anaerobic conditions. A given amount of treated waste water is then transferred from the septic tank into a biological reactor such as a sequencing batch reactor, where it is mixed and aerated. Such a mixing and aerating causes activation of the sludge and clarification of the waste water. The activated sludge in suspension in the liquor is then allowed to settle and an upper layer of clarified water formed above the mixed liquor after the settling period is decanted. The excess activated sludge in the biological reactor may then be removed therefrom and supplied into the septic tank so that the excess sludge be treated by digestion therein.

Abstract: The centrifugal liquid pump is of the rotary discs types and has an integrated gas injector of very single yet efficient structure. This pump has a casing defining an inner, substantially cylindrical chamber with an axial liquid inlet and a tangential liquid outlet. A rotary impeller is rotatably mounted within the chamber. This impeller has first and second spaced apart discs which are rigidly interconnected at such a distance away from each other as to extend close to the opposite walls of the chamber. The first disc that extends close to the wall into which the liquid inlet opens has a central opening of the same diameter as the liquid inlet to allow the liquid injected through the inlet to enter within the chamber in between the discs. The second disc has a plurality of spaced apart openings located at a constant radius, which is inferior to the radius of the discs. A coaxial power shaft is connected to the impeller so as to rotate it in a given direction.

Abstract: A method for installing a permanent bridge over a gincival crest between a pair of abutment teeth posterior to the canines, comprising a) providing a rigid infrastructure having two wings, the infrastructure being sized to extend in between and inside the abutment teeth; b) processing the abutment teeth to form retentive dental cavities large enough to receive the wings of the infrastructure; c) applying a resistant composite to the bottom of the infrastructure, curing the resistant composite that is so applied so as to fix the resistant composite to the infrastructure and thus to form a bridge, processing the bridge to remove imperfections and placing each of the wings of the infrastructure into the corresponding cavity to ensure that the so formed bridge fits over the gingival crest; d) fixing the wings of the infrastructure embedded into the formed bridge to the dental cavities of the abutment teeth by means of an adhesive; and e) filling the occlusal part of the bridge with an additional resistant composi

Abstract: An automatic device for cutting the legs of pork carcasses laying transversally onto a conveyor. A support carrier is mounted onto a frame extending close to the conveyor in such a manner as to be movable toward and away from the conveyor. The support carrier supports a circular saw extending in a vertical plane parallel to the moving direction of the conveyor at a sufficient height to cut the legs projecting away from the same. The support carrier also supports a device called "feeler" that is pivotably hung to a horizontal pivot at a predetermined distance from the saw, which corresponds to the average length for the legs to be cut. A control system is operatively connected to a presence sensor mounted in such a manner to detect the legs of the carcasses when these legs reach the feeler. The control system is also connected to a motion detector that detects any swing of the feeler, and to a power jack for moving the support carrier.

Abstract: A middle splitter for use to split an animal's middle into two parts. The splitter has a work table and a conveyor belt to move the middle forward. The splitter also has a circular saw which extends in a longitudinal slot in the conveyor belt. A guide extends from upstream down to the saw. This guide is parallel and extends above the conveyor belt in order to hold the middle against it. The splitter further has a caterpillar drive which extends before and past the saw. The drive is parallel to the conveyor belt and has a contour belt mounted onto a support of longitudinal shape. The contour belt has protruding plates shaped and positioned to engage the middle. The conveyor belt is driven into rotation by a shaft connected to a motor, so that the side of the contour belt nearest the saw moves forward. As a result, when the motor rotates the belt, the drive pulls the middle forward toward the circular saw for it to be cut.

Abstract: A pintlepin is disclosed, for use to connect together adjacent ends of segments of an endless belt. The pintlepin has a pintle consisting of at least one filament having an outer diameter substantially identical to the diameter of the tubular opening formed by the intermeshed loops used as a seam at the adjacent ends of the segments to be connected. It also has a leader made of a rigid or semi-rigid material. This leader has an outer diameter smaller than the outer diameter of the tubular opening. It acts as a guide to facilitate insertion for the pintle through the tubular opening formed by the loops. A swager connects together the pintle and the leader. This swager consists of a tubing having a front portion and a rear portion in which the rear end of the lader and the front end of the pintle are respectively swaged.

Abstract: A restraint garment has a front body portion, permanently connected to a rear body portion, both extending from the neck of the patient down to the mid-height of the patient's thighs. The rear body portion has two detachable pieces connected to each other by a zip fastener. The garment also has first and second rear shoulder portions extending from the shoulder edges of the front body portion down to the bottom of the shoulder blades in the back of the patient, which are detachably connected to each other by another zip fastener. The bottom parts of the front and rear portions are detachably connected to each other by a third zip fastener extending continuously form one thigh to the other, thereby making it possible to completely open the garment at the patient's fork. Each of the zip fasteners are preferably locked either with a key-operated lock or with a buckle made of a snap fastener and a sliding sleeve. This restraint garment makes it difficult not to say impossible for a patient to undress.