GB311274A - Improvements in impulse senders of the finger disc type - Google Patents

Improvements in impulse senders of the finger disc type

Info

Publication number
GB311274A
GB311274A GB12756/29A GB1275629A GB311274A GB 311274 A GB311274 A GB 311274A GB 12756/29 A GB12756/29 A GB 12756/29A GB 1275629 A GB1275629 A GB 1275629A GB 311274 A GB311274 A GB 311274A
Authority
GB
United Kingdom
Prior art keywords
shaft
spring
wire
wheel
sent out
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
Application number
GB12756/29A
Other languages
English (en)
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB311274A publication Critical patent/GB311274A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Braking Arrangements (AREA)
GB12756/29A 1928-05-08 1929-04-24 Improvements in impulse senders of the finger disc type Expired GB311274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE311274X 1928-05-08

Publications (1)

Publication Number Publication Date
GB311274A true GB311274A (en) 1930-05-08

Family

ID=20307629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12756/29A Expired GB311274A (en) 1928-05-08 1929-04-24 Improvements in impulse senders of the finger disc type

Country Status (3)

Country Link
BE (1) BE360385A (https=)
FR (1) FR674600A (https=)
GB (1) GB311274A (https=)

Also Published As

Publication number Publication date
FR674600A (fr) 1930-01-30
BE360385A (https=)

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