Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
  • H05B39/09—Circuit arrangements or apparatus for operating incandescent light sources in which the lamp is fed by pulses
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
  • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
  • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
  • B61F5/16—Centre bearings or other swivel connections between underframes and bolsters or bogies
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
  • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
  • E21F17/18—Special adaptations of signalling or alarm devices

Landscapes

• Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Geology (AREA)
• Circuit Arrangement For Electric Light Sources In General (AREA)
• Emergency Protection Circuit Devices (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10086510

Family Applications (2)

Family Applications Before (1)

Country Status (3)

• 0
  • NL NL83016D patent/NL83016C/xx active
  • BE BE512866D patent/BE512866A/xx unknown
  • NL NL46719D patent/NL46719C/xx active
  • BE BE422752D patent/BE422752A/xx unknown
• 1951
  • 1951-07-17 GB GB1694651A patent/GB702230A/en not_active Expired

Also Published As

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