GB297388A - Improvements in or relating to impulse senders of the finger disc type - Google Patents

Improvements in or relating to impulse senders of the finger disc type

Info

Publication number
GB297388A
GB297388A GB26735/28A GB2673528A GB297388A GB 297388 A GB297388 A GB 297388A GB 26735/28 A GB26735/28 A GB 26735/28A GB 2673528 A GB2673528 A GB 2673528A GB 297388 A GB297388 A GB 297388A
Authority
GB
United Kingdom
Prior art keywords
spring
pawl
wheel
impulse
projection
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
GB26735/28A
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 GB297388A publication Critical patent/GB297388A/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)
  • Mechanical Operated Clutches (AREA)
GB26735/28A 1927-09-20 1928-09-18 Improvements in or relating to impulse senders of the finger disc type Expired GB297388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE297388X 1927-09-20

Publications (1)

Publication Number Publication Date
GB297388A true GB297388A (en) 1929-09-19

Family

ID=20307354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26735/28A Expired GB297388A (en) 1927-09-20 1928-09-18 Improvements in or relating to impulse senders of the finger disc type

Country Status (3)

Country Link
BE (1) BE354335A (enrdf_load_stackoverflow)
FR (1) FR660657A (enrdf_load_stackoverflow)
GB (1) GB297388A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR660657A (fr) 1929-07-16
BE354335A (enrdf_load_stackoverflow)

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