Device for cutting off the electric current on a vehicle by means of a circuit breaker operating by a metal-liquid (mercury) conductor
FR2707704A1
Device for pumping water for deep boreholes with pneumatic operation controlled by electronic air distributor without submerged rotating parts
FR2588321A1
Unit for pneumatic pumping of liquid from great depths, operating through submerged tanks without rotating components, driven by muscular power or by motor
FR2576980A2
Hydropneumatic pump operating by means of air switch distributors automatically controlled by valves and vacuum pumps
FR2569551A1
Removable bottom intended to create a vacuum (insulating space) in cooking containers (saucepans etc.)
FR2567206A1
Hydropneumatic pump functioning by means of air reversing distributors automatically controlled by valves and vacuum pump
FR2549542A1
Pneumatic water pump with alternating linear motor self-controlled by control-rod integrated in the connecting rod, connecting the pistons, with twinned air-water extensible chambers
FR2562483A1
Anti-rolling back mechanical device for motor vehicles
FR2530554A1
Anti-rollback system for motor vehicles
FR2509388A1
Hydro-pneumatic well water pump - has two submerged vessels operated by compressed air through flexible pipework
FR2506858A1
Lifting pump for water - has closed water circuit between driving and driven piston in double acting cylinder
FR2471500A1
Compressed air driven pump for well shafts - has motor piston and pump piston on common shaft in cylinder with control valves
FR2444184A1
Constant-flow hydro-pneumatic pump - has automatic pressure regulation and double chambers with inlet and delivery valves
FR2418946A1
Instantaneous translation of foreign film sound using portable receive - using film with magnetic sound track which is read and transmitted by ultra short wave or IR system
FR2385927A1
Pump for deep water well - has ball cock to control admission of water into vessel from which it is displaced by compressed air
FR2349853A1
Portable cassette unit for dubbing cinema films - includes counter for periodically synchronising playback with film
FR2233221A1
Anchor with electromechanically moveable flukes - block moves along threaded motor shaft to pivot flukes
FR2230185A5
Adjustable plastic arm rest for car door - is for use when the window is down and does not foul window gear
FR2228386A5
Oil filter for automobile engines - has magnetised disc to retain metal particles
