Abstract: A device is provided for dispensing seeds singly. The device includes a drum, a dispensing disc, a vacuum chamber and a seal of the vacuum chamber, between the drum and the disc. The seal includes a friction insert mounted so as to be immobile in rotation relative to the drum against the periphery of the disc and an elastic seal mounted so as to be immobile in rotation between the drum and the friction insert. The elastic seal maintains the friction insert in a position of leaning against the disc.

Abstract: A pneumatic seeder is provided, which is configured to be fixedly attached to a farming machine. The seeder includes an element for contacting with the ground, an element for storing a product to be sown, a pneumatic distributor of said product, a suction fan having at least one air inlet connected to the pneumatic for distributor and at least one air discharge outlet, an air extractor connected to the discharge outlet, the end of the air extractor leading out to face the ground. The seeder includes a damper and/or diverter for damping and/or diverting the flow of air coming from the air extractor. The damper and/or diverter is placed downstream from the end of the air extractor.

Abstract: A device is provided for dispensing seeds singly. The device includes a drum, a dispensing disc, a vacuum chamber and a seal of the vacuum chamber, between the drum and the disc. The seal includes a friction insert mounted so as to be immobile in rotation relative to the drum against the periphery of the disc and an elastic seal mounted so as to be immobile in rotation between the drum and the friction insert. The elastic seal maintains the friction insert in a position of leaning against the disc.

Abstract: A pneumatic seeder is provided, which is configured to be fixedly attached to a farming machine. The seeder includes an element for contacting with the ground, an element for storing a product to be sown, a pneumatic distributor of said product, a suction fan having at least one air inlet connected to the pneumatic for distributor and at least one air discharge outlet, an air extractor connected to the discharge outlet, the end of the air extractor leading out to face the ground. The seeder includes a damper and/or diverter for damping and/or diverting the flow of air coming from the air extractor. The damper and/or diverter is placed downstream from the end of the air extractor.

Abstract: A flexible transmission device is provided, which includes a guiding sheath housing a transmission cable. The device includes such a device comprises a rigid element which limits deformation of the sheath along a first direction perpendicular to the longitudinal axis of the sheath without preventing its deformation along a second direction that is essentially orthogonal to the first direction and to the longitudinal axis. The rigid element being fixedly attached to the sheath.

Abstract: Described herein is a planting unit that includes a frame whereon are mounted: means of opening a furrow in the ground, in the form of two adjacent discs; a pointed member removably mounted on said frame and protruding between said two discs and in the direction of the ground, said member being intended to form said furrow in a V shape, means of retaining said member mounted mobile on said frame between a retaining position of said member and a releasing position; and means of actuating connected to said means of retaining