Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L3/00—Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal
  • B61L3/02—Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
  • B61L3/08—Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
  • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
  • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
  • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
  • H03K17/601—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors using transformer coupling
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
  • H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
  • H03K5/135—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals by the use of time reference signals, e.g. clock signals

Applications Claiming Priority (1)

Publications (1)

Family

ID=22649098

Family Applications (1)

Country Status (11)

Families Citing this family (5)

Family Cites Families (1)

• 0
  • BE BE788334D patent/BE788334A/xx unknown
• 1971
  • 1971-09-03 US US00177565A patent/US3748497A/en not_active Expired - Lifetime
• 1972
  • 1972-05-31 CA CA143,521,A patent/CA951385A/en not_active Expired
  • 1972-07-25 GB GB3466272A patent/GB1397745A/en not_active Expired
  • 1972-07-26 AU AU44992/72A patent/AU4499272A/en not_active Expired
  • 1972-08-17 DE DE2240428A patent/DE2240428A1/de active Pending
  • 1972-08-22 BR BR005739/72A patent/BR7205739D0/pt unknown
  • 1972-08-23 IT IT28402/72A patent/IT964171B/it active
  • 1972-08-25 ES ES406104A patent/ES406104A1/es not_active Expired
  • 1972-09-01 FR FR7231073A patent/FR2152040A5/fr not_active Expired
  • 1972-09-01 JP JP8722072A patent/JPS4833503A/ja active Pending

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