1
Marco Arzenton, Bruno Beaco, Gilles Cannet, Didier Lasnier, Philippe Pisot, Stephane Thouvier: Tap/pressure regulator assembly for a gas bottle and a gas bottle equipped with such an assembly. L Air Liquide Societe Anonyme pour l Etude et l Exploitation des Procedes Georges Claude, Young & Thompson, November 2, 1999: US05975121 (29 worldwide citation)

The tap/pressure regulator assembly, advantageously housed in a streamlined cowl forming a bottle-handling bonnet (C), comprises a body (1) intended to be mounted on a gas bottle and defining, on the inside, a gas utilization circuit, going to an outlet (3) via an isolating valve actuated by a lever ...


2
Michel Arnout, Patrick Fonteneau, Didier Lasnier: Steelworks cutting nozzle with a double heating ring. L Air Liquide, Lee C Robinson Jr, April 18, 1989: US04821963 (13 worldwide citation)

The nozzle comprises an oxidizing outer heating ring and a carburizing inner heating ring surrounding the cutting jet. This nozzle is made in two parts respectively forming a unit (1) opf injectors and a cutting unit (2) in adjoining relation to each other in a transverse joint plane and in which ar ...


3
Didier Lasnier, Bruno Beaco, Daniel Sakreiter: Pressure reducer. L Air Liquide Societe Anonyme pour l Etude et l Exploitation des Procedes Georges Claude, Young & Thompson, February 11, 1992: US05086807 (12 worldwide citation)

The pressure reducer body includes oppositely disposed bores for mounting inlet and outlet connecting devices, and the outer end of another bore defining a high pressure chamber in which the regulating valve is mounted, is adapted to receive a connecting device for a high pressure manometer defining ...


4
Michel Arnout, Didier Lasnier, Richard Soula: Cutting head with oxygen jet. L Air Liquide Societe Anonyme pour l Etude et l Exploitation des Procedes Georges Claude, Curtis Morris & Safford, May 19, 1992: US05114121 (2 worldwide citation)

The present invention concerns a cutting head made of a cutting nozzle (2) with cutting oxygen duct (6) having radial ribs (11), the assembly being force fitted in a sheath (3) thus forming ducts of oxycombustible mixture (32). This nozzle which produces an improved heat dissipation can be made of r ...


5
Didier Lasnier, Michel Arnout: Valve with progressive opening and cutting torch (flame cutter) including such a valve. Air Liquide, Soudure Autogene Francaise, March 5, 1993: FR2680853-A1 (2 worldwide citation)

The valve with progressive opening comprises a shutter element (23) located in an internal space (14) of a tubular valve body (13) including, at one end, a conical seat (20) extended peripherally by a fluid-passage structure (21) including at least one fluid passage (22), the shutter element (23) in ...


6
Denis Bolot, Francis Cuny, Didier Lasnier: Torche nozzle with internal gas mixing. L Air Liquide Societe Anonyme Pour L Etude Et L Exploitation des Procedes Georges Claude, Young & Thompson, March 31, 1987: US04653692 (1 worldwide citation)

This nozzle includes an outer case (1) and a core (2) which define in succession: a series of passageways (15) having a zone for the injection of fuel gas and comburent gas, a mixing zone of small section and a primary homogenization zone of larger section; an annular secondary homogenization zone ( ...


7
Didier Lasnier: Valve with progressive opening which can be immobilized in a given position and cutting torch including such a valve. Air Liquide, Soudure Autogene Francaise, September 10, 1993: FR2688288-A1 (1 worldwide citation)

The valve with progressive opening comprises a shutter element (23) including a head (28) received in a ball cage (36) including at least one ball (45) selectively urged, by a ramp (incline) (46) carried by a push rod (39), into contact with a shaped peripheral surface (48) of the head (28) in order ...


8
Michel Arnout, Didier Lasnier, Eric Dufour: Cutting torch for iron and steel metallurgy. L Air Liquide Societe Anonyme pour l Etude et l Exploitation des Procedes Georges Claude, Curtis Morris & Safford, March 26, 1991: US05002261 (1 worldwide citation)

The invention concerns a cutting torch for iron and steel metallurgy which is provided with two oxygen cutting ducts, ending in two housings, for receiving two cutting inserts, or a heating nozzle and a cutting insert. In this manner, there is obtained a torch which may very rapidly be converted int ...


9
Didier Lasnier, Pedro Collado, Michel Arnout: (valve) For adjusting the flowrate of fluid. Air Liquide, Soudure Autogene Francaise, January 15, 1993: FR2678998-A1

The nut (6) by which the tap is fitted in a housing (3) of a body (1) defining a passage for fluid (2, 4) and into which a needle valve stem (12) is screwed, actuated by an operating handwheel (20), is formed, at its upper end, with a transverse slit (slot) (22) defining a centrally-tapped end disc ...