GB2222011B - Improvements in or relating to tactile indicators for use on pedestrian crossings - Google Patents

Improvements in or relating to tactile indicators for use on pedestrian crossings

Info

Publication number
GB2222011B
GB2222011B GB8918254A GB8918254A GB2222011B GB 2222011 B GB2222011 B GB 2222011B GB 8918254 A GB8918254 A GB 8918254A GB 8918254 A GB8918254 A GB 8918254A GB 2222011 B GB2222011 B GB 2222011B
Authority
GB
United Kingdom
Prior art keywords
relating
pedestrian crossings
tactile indicators
tactile
indicators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB8918254A
Other versions
GB2222011A (en
GB8918254D0 (en
Inventor
Richard Keith Duley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Radix Systems Ltd
Original Assignee
Radix Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Radix Systems Ltd filed Critical Radix Systems Ltd
Publication of GB8918254D0 publication Critical patent/GB8918254D0/en
Publication of GB2222011A publication Critical patent/GB2222011A/en
Application granted granted Critical
Publication of GB2222011B publication Critical patent/GB2222011B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)
GB8918254A 1988-08-12 1989-08-10 Improvements in or relating to tactile indicators for use on pedestrian crossings Expired - Lifetime GB2222011B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888819227A GB8819227D0 (en) 1988-08-12 1988-08-12 Improvements in/relating to tactile indicators for use on pedestrian road crossings

Publications (3)

Publication Number Publication Date
GB8918254D0 GB8918254D0 (en) 1989-09-20
GB2222011A GB2222011A (en) 1990-02-21
GB2222011B true GB2222011B (en) 1992-05-20

Family

ID=10642058

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888819227A Pending GB8819227D0 (en) 1988-08-12 1988-08-12 Improvements in/relating to tactile indicators for use on pedestrian road crossings
GB8918254A Expired - Lifetime GB2222011B (en) 1988-08-12 1989-08-10 Improvements in or relating to tactile indicators for use on pedestrian crossings

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888819227A Pending GB8819227D0 (en) 1988-08-12 1988-08-12 Improvements in/relating to tactile indicators for use on pedestrian road crossings

Country Status (1)

Country Link
GB (2) GB8819227D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1232074B (en) * 1989-03-31 1992-01-23 Marelli Autronica CONTROL AND ADJUSTMENT DEVICE FOR A DIRECT CURRENT ELECTRIC MOTOR
GB0114860D0 (en) * 2001-06-18 2001-08-08 Radix Systems Ltd Light controlled pedestrian crossings

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1480830A (en) * 1973-07-27 1977-07-27 Bosch Gmbh Robert Circuit arrangements
GB1526243A (en) * 1974-09-26 1978-09-27 Siemens Ag Dc electric motor control circuits
GB1535748A (en) * 1974-12-20 1978-12-13 Gen Electric Electric motor control system
GB2004097A (en) * 1977-09-07 1979-03-21 South Australia Minister Of Tr Modular motor and control means and method
GB2135483A (en) * 1983-01-12 1984-08-30 Matsushita Electric Ind Co Ltd Output circuit and brushless motor using the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1480830A (en) * 1973-07-27 1977-07-27 Bosch Gmbh Robert Circuit arrangements
GB1526243A (en) * 1974-09-26 1978-09-27 Siemens Ag Dc electric motor control circuits
GB1535748A (en) * 1974-12-20 1978-12-13 Gen Electric Electric motor control system
GB2004097A (en) * 1977-09-07 1979-03-21 South Australia Minister Of Tr Modular motor and control means and method
GB2135483A (en) * 1983-01-12 1984-08-30 Matsushita Electric Ind Co Ltd Output circuit and brushless motor using the same

Also Published As

Publication number Publication date
GB2222011A (en) 1990-02-21
GB8819227D0 (en) 1988-09-14
GB8918254D0 (en) 1989-09-20

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