ROTORK LTD innovation strategy

Patent filings in countries

#	Industry
#1	Mechanical elements
#2	Machines
#3	Electrical machinery and energy
#4	Engines, pumps and turbines
#5	Control
#6	Civil engineering

#	Technology
#1	Venting or aerating devices
#2	Unspecified technologies
#3	Dynamo-electric machines
#4	Servomotors
#5	Clutches and brakes
#6	Gearing
#7	Spring or inertia motors
#8	Pipes
#9	Systems controlling non-electric variables
#10	Fire-fighting

Publication	Filing date	Title
EP0026614A1	1980-09-17	Actuator with alternative motor or manual drive
EP0005016A1	1979-03-30	An electric switch control unit, more particularly for electric motor driven actuators
US4289038A	1979-03-19	Fail-safe attachment for an actuator
GB2018389A	1979-03-07	Fail-safe spring mechanism attachment for an actuator
IT7867006D0	1978-01-04	Quarter rotation drive for graduated butterfly valve - has single phase two-pole motor with shaft operating limit switches controlling stator excitation
JPS5494608A	1977-12-31	Improvement in actuator
FR2413811A1	1977-12-30	Quarter rotation drive for graduated butterfly valve - has single phase two-pole motor with shaft operating limit switches controlling stator excitation
DE2757809A1	1977-12-23	Quarter rotation drive for graduated butterfly valve - has single phase two-pole motor with shaft operating limit switches controlling stator excitation
US4177395A	1977-12-19	Actuators
GB1550376A	1977-12-16	Actuators
DE2742280A1	1977-09-20	METHOD AND DEVICE FOR REFIRING
GB1446005A	1973-08-10	Motor driven actuating mechanisms
GB1429795A	1972-03-23	Pressure equalising arrangements
GB1389077A	1972-03-23	Drive mechanisms
US3753350A	1971-08-30	Reversible hydraulic actuator with selectable fail-safe operation
GB1357529A	1970-09-04	Actuators
GB1277661A	1969-03-13	Improvements in or relating to electric switch control units for electric motor driven actuators
CA908705A	None	Control units for valve actuators