Abstract: The harmonica according to the invention includes a comb or windchest supporting at least one reed plate on which are mounted sound reeds and a peripheral shell allowing to hold the harmonica, said shell including at least one cover plate. Each of its reed plates is sandwiched between the pressing face concerned of the comb and the corresponding cover plate by pressing means for bringing said cover plate closer to the comb between the mouthpiece face of the instrument and the pressing tabs on the side of the bell of the instrument.

Abstract: The harmonica according to the invention includes a comb or windchest supporting at least one reed plate on which are mounted sound reeds and a peripheral shell allowing to hold the harmonica, said shell including at least one cover plate. Each of its reed plates is sandwiched between the pressing face concerned of the comb and the corresponding cover plate by pressing means for bringing said cover plate closer to the comb between the mouthpiece face of the instrument and the pressing tabs on the side of the bell of the instrument.

Abstract: The blade-holder (3,4) for a harmonica according to the invention supporting at least one vibrating tonal blade (301, 401) comprises air-tightness means formed by side walls (301 L, 401 L) and an end wall (301 E, 401 E) extending in the continuation of the side faces and of the corresponding end face of the window through which the free part of the tonal blade concerned (301, 401) oscillates.

Abstract: The blade-holder (3,4) for a harmonica according to the invention supporting at least one vibrating tonal blade (301, 401) comprises air-tightness means formed by side walls (301 L, 401 L) and an end wall (301 E, 401 E) extending in the continuation of the side faces and of the corresponding end face of the window through which the free part of the tonal blade concerned (301, 401) oscillates.

Abstract: A sliding vehicle for snow sport includes a sliding pad bearing on the snow, a support element provided with a seat in the central portion and a conducting member in the front portion. The support element may be articulated at the rear portion of the pad around a transverse axis extending perpendicularly with respect to the longitudinal direction, and is connected to the front of the pad by a mechanical connection, allowing the support element to be turned down against the pad in the putting away and transportation position. A shock absorbing member may be added to the mechanical connection in order to absorb the shocks received by the pad during the sliding phase.

Abstract: A braking device for a motorized snow vehicle having a front steering assembly with at least one steering column secured to at least one ski, and articulated in rotation around a spindle. The motorized snow vehicle further has a rear support assembly, equipped with at least one driving caterpillar track. The front steering assembly comprises at least one mobile braking element operated, by control means, between a retracted rest position inside a cavity of the ski, and an active braking position protruding out under the general sliding surface of the ski in a middle zone situated appreciably at the level of the articulation spindle between the steering column and the ski.

Abstract: A growth medium consisting of a bag (1) containing a growth substrate (10). The bag (1) includes a bottom wall (11) made of an air and water-permeable material for retaining the growth substrate (10) during handling and transport. The upper wall (12) is secured to the bottom wall (11) around the edge (2) of the bag and consists of at least two superimposed sheets including a first sheet (13) made of a coarse mesh material enabling a decorative layer arranged on the medium at a later stage to be firmly attached thereto, and a second sheet (14) made of a material that is rapidly biodegradable on exposure to water and can temporarily retain the growth substrate (10) during handling and transport. A prefabricated modular medium with good decorative sheet retaining properties may thus be achieved.

Abstract: An improved suspension arrangement for the front steering assembly of a snow-bike, and the snow-bike incorporating the improved suspension arrangement. The steering assembly for which the suspension is intended includes a steering column having a steering device such as a handlebar at its upper end and a ski at its lower end. The suspension arrangement includes an intermediate arm journalled with respect to the steering column and extending longitudinally of the snow-bike. A rear portion of the intermediate arm is journalled with respect to the ski. A suspension assembly, such as a piston-cylinder and spring assembly, is connected between the intermediate arm and the steering column.

Abstract: Motorized snow vehicle composed of a front steering assembly and a rear support assembly including a support chassis and a motor activating a tread, the front steering assembly having a steering column adapted to pivot on the chassis and which carries at its lower portion a front runner or ski and at its upper portion handlebars or the like, wherein the chassis includes a main support beam extending towards the rear above which the motor is attached.

Abstract: A steering assembly for a vehicle having a rear carrier assembly that includes ground engaging means, a front steering assembly that includes ground engaging means, and mounting means mounting the front steering assembly on the rear carrier assembly for pivotable movement about a steering axis lying in a plane of general symmetry. The system according to the invention includes an adjustable pin for limiting pivotable movement of the front steering assembly about the steering axis to a predetermined angle when the pin is adjusted to an active position. The adjustable pin is selectively movable to an inactive position for effecting pivotable movement of the front steering assembly beyond the predetermined angle.

Abstract: A method is provided which produces a head of piolet, all in one piece, by punching out a metallic blank (i.e. a long cross-shaped blank whose outline is symmetrical with regard to its longitudinal axis and comprises four parts: a peen part, a pike part, and two lateral fastening flaps) from a plate of metal, and then by the folding of that metallic blank symmetrically with regard to its medial plane, along its longitudinal axis or on both sides thereof, at least along that portion of length which corresponds to the pike. The blank is eventually shaped approximately along an arc of circle which is located along the medial plane of the blank before mounting upon the handle of the piolet.

Abstract: A snap-hook is provided which consists of an open ring and of a tilting finger whose one end pivots upon the corresponding end of the body of the ring and is drawn back by means of a spring. The axis around which the said finger tilts is inclined with respect to the perpendicular to the plane of the ring, so that, when the snap-hook opens, the finger tilts out of this plane and may to pass beyond the opposite main longitudinal back arm of the ring, without striking against it.