Abstract: A method for manufacturing a correctable lens for glasses from an injectable thermo-plastic polymer material, or other moldable polymer, includes the step of molding a polymer blank provided with the contour of the corrective lens. The polymer blank is joined with a peripheral piece having the same internal radius of curvature as that of the polymer blank creating a lens blank. The internal face of the lens blank is ground and polished to obtain the desired ocular correction. The polymer blank is then separated from the lens blank, the lens blank now being the corrective lens ready for assembly with the frame.

Abstract: The method of the invention for manufacturing a correctable lens for glasses from an injectable thermo-plastic polymer material, or other moldable polymer, consists in: molding a glass blank (2) provided with the contour of the corrective lens; assembling the lens blank with a peripheral piece (3) having the same internal radius of curvature as that of the glass blank (2), so as to compose a lens blank (1); grinding and polishing the internal face of the lens blank (1) to obtain the desired ocular correction; separating the glass blank (2) from the lens blank to obtain the corrective lens ready for assembly with the frame.

Abstract: The invention concerns eyewear with means for interchanging a lens including non-rectilinear assembly zones provided on lateral edges of the lens, zones for receiving the assembly zones, one of which is formed at least partly by a piece mobile relative to the frame, and retaining means for normally maintaining the mobile piece in an engagement position.

Abstract: The invention concerns spectacles with means for interchanging a lens (2) comprising: non-rectilinear assembly zones, provided on the lateral edges (2a, 2b) of the lens (2); zones (21, 31) for receiving said assembly zones, one of which at least is formed at least partly by a piece (5) mobile relative to the frame (3); and at least retaining means (6) for normally maintaining the mobile piece (5) in engagement position.

Abstract: There is disclosed a self-propelled lawnmower wherein the wheels are mounted on a fixed frames surrounded, at least on its two lateral faces, by fixed protective skirts which extend practically to ground level. A cutting assembly is mounted on a secondary chassis which can be displaced with respect to the fixed chassis supporting the wheels. A linkage between the two chassis is provided by tilting levers that pivot on the fixed chassis and allow the secondary chassis to be vertically displaced thereon. Movement is transmitted to the drive wheels by a drive gear that engages a ring gear arranged inside each drive wheel, the drive gears being displaceable along the pitch circles of the ring gears when the secondary chassis is displaced.

Abstract: Device for cutting, picking up, and for temporarily storing grass or similar products with a view to transporting the stored product to a site for further processing. The device is integrally mounted to a vehicle so that it may be moved over an area of grass to be cut. The device includes a cutting head to cut and to take-up the lawn clippings. The cutting head is connected to first and second transfer pipes utilized to direct the cut grass to the interior of a storage enclosure. A turbine is horizontally mounted under the storage enclosure between the first and second transfer pipes and is dissociated from the cutting head. The turbine provides suction inside the first pipe so that cut grass may be moved from the cutting head toward the turbine. A turbine wheel with blades moves the cut grass tangentially into the second pipe which is integrated with the storage enclosure so as to direct the flow of cut grass into the enclosure.

Abstract: A closing device for ski boots and the like, composed of a strapping (7) comprising a flexible cord (8) in the form of a closed loop, one of the ends (10) of which is secured to one of the edges (5) of the part (4) of the boot allowing it to be opened and the other end (14) of which can be subjected to the action of a lever (9) capable of pivoting about a pivot pin (11) provided on the other edge (6) of the part of the boot allowing it to be opened, in order to exert a pull to ensure closing. The pivoting lever (9) is mounted permanently on the boot and possesses, over its length, a continuous slot (15), in which the end (11) of the loop (8) on which the pull is exerted slides freely, in such a way that the two ends of the flexible cord (8) in the form of a closed loop are kept permanently on either side of the two edges of the element of the boot allowing it to be opened and closed.

Abstract: This invention relates to a suspension for vehicles, wherein the wheels are associated with the bodywork by means of a flexible assembly essentially constituted by two longitudinal blades and by two transverse blades connected to the bodywork by means of elastically deformable connecting elements, wherein:--the ends of the longitudinal blades and transverse blades are located in two planes spaced apart from each other, these two planes being parallel or not;--at the front of the chassis, the ends of the longitudinal blades are mounted so as to allow a momentary longitudinal displacement under the effect of a shock and to avoid any transverse or angular displacement;--at the rear of the chassis, the ends of the longitudinal blades are blocked in torsion in the hub-holder elements.

Abstract: A ski boot in plastic material includes a shell adapted to receive the foot, a front spoiler articulated on the shell for pivoting frontwards thereof and adapted to grip the bottom part of the leg, a buckle system for tightening the front spoiler on the bottom part of the leg, and a damper joined to the shell and to the front spoiler. A flexible arciform plate is further provided which adopts the general shape of the instep, an upper end of the plate being joined to the front spoiler, and a lower end of the plate being joined to the shell, the upper end of said arciform bending plate cooperating with a compressible elastic return element during leaning forward movements.

Abstract: The invention relates to a ski boot of the type comprising a shell, at least one spoiler and clamping means constituted by a lever, a clamping member, a toothed piece designed to cooperate with said clamping member, and whereinthe toothed piece is housed between two parallel side walls molded with the boot, and defining between them an open chamber on the edge of the spoiler or of the shell, and the height of which substantially coincides with the height of the toothed piece;and the end of said chamber:is, on the one hand, extended at the top by a streamlined structure which is progressively joined to the front of the spoiler or of the shell;and on the other hand, comprises a split part, perpendicular to the walls and situated plumb with the beginning of said streamlined structure.

Abstract: The present invention relates to a ski boot made of plastics material comprising a shell adapted to receive the foot, whereinthe rear part of the shell presents a rigid, flexible portion which follows the shape of the bottom of the rear face of the leg;and the rear of the boot presents a means adapted to push this rigid, flexible portion towards the front of the shell.

Abstract: A ski boot consisting of a shell to receive the foot and of a rear collar hinging on the shell to snugly fit against the leg, the shell comprising on its rear side a raised molding pointing outward for the purpose of limiting the displacement of the collar on the shell, characterized in thatthe collar at its lower part comprises a raised molding parallel to the raised molding on the shell but pointing into the boot and capable of resting on said molding on the shell, andthe shell comprises at its rear part a compressible element capable of resting on and cooperating with said raised molding of the collar when said collar moves on the shell.

Abstract: A plastic ski boot, comprising a molded shell formed of one solid stock with the sole, an upper insole rigidly situated at the bottom of the shell and above the sole, flexible tightening means taking support on the different faces of the shell, intended to firmly tighten the shell to the foot of a skier, wherein at the level of the heel, at the interior of the space formed between the upper insole and the sole, a rigid member connected to the end of the tightening means which, when it is subjected to a pressure exercised on the rear of the boot by the boltlocking of the rear abutment of the connection of the binding to the boot, exerts on said tightening means a force assuring holding of the foot in the interior of the boot.

Abstract: A ski-boot having a U-shaped reinforcement with a horizontal base extending through the sole of the boot in which the upper arms of the reinforcement are secured at the top and to the rear of the boot, and bear against a major portion of the boot. The invention is concerned with injection moulded ski-boots of plastics, and preferably thermoplastics material.