ER Fluid Developments Limited

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Sheffield, GB

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Patents Grantslast 30 patents

Information Patent Grant
High speed actuators and vibrators based on electro-rheological fluids
- Patent number 6,272,852
- Issue date Aug 14, 2001
- ER Fluid Developments Limited
- James Edward Stangroom
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Variable displacement pump
- Patent number 5,409,354
- Issue date Apr 25, 1995
- ER Fluid Developments Limited
- James E. Stangroom
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Variable displacement pump
- Patent number 5,356,269
- Issue date Oct 18, 1994
- ER Fluid Developments Limited
- James E. Stangroom
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Electro-rheological fluids/electric field responsive fluids
- Patent number 4,812,251
- Issue date Mar 14, 1989
- ER Fluid Developments Limited
- James E. Stangroom
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Electrically controlled, progressive, frictional, torque transmitti...
- Patent number 4,664,236
- Issue date May 12, 1987
- ER Fluid Developments Limited
- James E. Stangroom
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

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