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Patents Grants
last 30 patents
Information
Patent Grant
High pressure pump for all liquids
Patent number
6,264,437
Issue date
Jul 24, 2001
Hydro Rene Leduc
Louis-Claude Porel
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
High-pressure pump to feed internal-combustion engine fuel-injections
Patent number
5,554,008
Issue date
Sep 10, 1996
Hydro Rene Leduc
Louis-Claude Porel
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Motor driven hydraulic tool with variable displacement hydraulic pump
Patent number
5,477,680
Issue date
Dec 26, 1995
Burndy Corporation
George T. Heskey
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Rotating joint for hydraulic system
Patent number
5,395,125
Issue date
Mar 7, 1995
Hydro Rene Leduc
Louis-Claude Porel
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Hydraulic piston pumps equipped with suction valve
Patent number
5,354,181
Issue date
Oct 11, 1994
Hydro Rene Leduc
Louis-Claude Porel
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Hydraulic pumps
Patent number
5,032,061
Issue date
Jul 16, 1991
Hydro Rene Leduc
Louis C. Porel
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Rail car axle with axial hydraulic pump
Patent number
4,964,345
Issue date
Oct 23, 1990
Hydro Rene Leduc
Louis C. Porel
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Hydraulic pump with pistons and controlled suction valves
Patent number
4,629,400
Issue date
Dec 16, 1986
Hydro Rene Leduc
Louis-Claude Porel
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Prestressed hydraulic accumulator
Patent number
4,603,711
Issue date
Aug 5, 1986
Hydro Rene Leduc
Louis C. Porel
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Method for manufacturing a prestressed hydraulic accumulator
Patent number
4,492,013
Issue date
Jan 8, 1985
Hydro Rene Leduc
Louis C. Porel
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Pump with spring loaded valve
Patent number
4,486,152
Issue date
Dec 4, 1984
Hydro Rene Leduc
Louis-Claude Porel
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Prestressed assembled oleo-pneumatic accumulators
Patent number
4,449,552
Issue date
May 22, 1984
Hydro Rene Leduc
Louis C. Porel
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Patents Applications
last 30 patents
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