Abstract: A brake fluid reservoir includes in its upper portion a bottleneck with a thread and a top for receiving a cap with an edge and a top. The top of the bottleneck has channel opens into the atmosphere, one end of the channel leading into the atmosphere, one end of the channel leading into the interior of the bottleneck and the other end communicating with the outside atmosphere via a cavity.

Abstract: A hydraulic braking assembly (14) for a vehicle comprising an electric servomotor (15), a master cylinder (16), a hydraulic fluid tank (17) mounted on the master cylinder, a hydraulic fluid level sensor (25) situated inside the fluid tank and monitoring the hydraulic fluid level inside the tank. The fluid level sensor is connected from the tank to the computer of the electric servomotor by a cable (26).

Abstract: Reservoir in which the walls (111, 121) and the partitions (112, 122) are assembled by thermowelding the edges together with the exception of the edges (113a, 123a) of the well elements (113, 123), the edge (113a) of the upper element (113) and the edge (123a) of the lower element (123) of the well (104) have complementary shapes producing, by assembly under the pressure exerted by bringing together and welding the walls (111, 121) and the partitions (113, 123) of the reservoir (100), a fluid-tight joint between the edges of the two well elements, without generating projections that are deformed toward the interior of the well. The thermowelding hotplate (140) has a cut-out (143) along the line of the well elements (113, 123) so as to leave the edge (113a, 123a) of the well elements out of contact when the edge (111a, 121a) of the walls (111, 121) and that (112a, 122a) of the partitions (112, 122) of each of the reservoir parts (110, 120) is pressed against one face (141, 142) of the hotplate.

Abstract: A hydraulic braking assembly (14) for a vehicle comprising an electric servomotor (15), a master cylinder (16), a hydraulic fluid tank (17) mounted on the master cylinder, a hydraulic fluid level sensor (25) situated inside the fluid tank and monitoring the hydraulic fluid level inside the tank. The fluid level sensor is connected from the tank to the computer of the electric servomotor by a cable (26).

Abstract: Reservoir in which the walls (111, 121) and the partitions (112, 122) are assembled by thermowelding the edges together with the exception of the edges (113a, 123a) of the well elements (113, 123), the edge (113a) of the upper element (113) and the edge (123a) of the lower element (123) of the well (104) have complementary shapes producing, by assembly under the pressure exerted by bringing together and welding the walls (111, 121) and the partitions (113, 123) of the reservoir (100), a fluid-tight joint between the edges of the two well elements, without generating projections that are deformed toward the interior of the well. The thermowelding hotplate (140) has a cut-out (143) along the line of the well elements (113, 123) so as to leave the edge (113a, 123a) of the well elements out of contact when the edge (111a, 121a) of the walls (111, 121) and that (112a, 122a) of the partitions (112, 122) of each of the reservoir parts (110, 120) is pressed against one face (141, 142) of the hotplate.

Abstract: The subject of the present invention is a stabilizer-reamer for drilling an oil well. The invention provides an improvement to drillpipe string stabilizers used when drilling an oil well.The purpose of the stabilizer, which forms the subject of the invention, is to allow the drillpipe string to be raised through fractured formations, in addition to its normal function of stabilizing the drillpipes.To this end, it is fitted with retractable abrasive blades which make it possible to re-drill the fractured formations when the drillpipes are being raised and to avoid jamming in the well.The main claims relate to the novel function of the stabilizer, to the geometry of its elements and to the mechanism of opening the blades.