IPC Subgroup
B41J 19/34 Escapement-feed character-spacing mechanisms
Introduced: September 1968
Last revised: January 2006
Full Title
Character- or line-spacing mechanisms > Character-spacing or back-spacing mechanisms; Carriage-return or release devices therefor > Escapement-feed character-spacing mechanisms
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- Subclass:
- TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
8 direct subcodes
Child Classifications
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- B41J 19/36 Driving mechanisms, e.g. springs stressed during carriage return
- B41J 19/4 Escapements having a single pawl or like detent
- B41J 19/42 Escapements having two pawls or like detents
- B41J 19/5 Electromagnetically-controlled escapements
- B41J 19/52 Escapements controlling positive-feed mechanism
- B41J 19/54 Construction of universal bars
- B41J 19/56 Escapements controlling web or strip feed
- B41J 19/58 Differential or variable-spacing arrangements
Top Applicants
Top 10 applicants by patent filingsfor class B41, 2013–2023, worldwide · Source: EPO PATSTAT
- SEIKO EPSON CORPORATION 14,672
- CANON 14,153
- RICOH COMPANY 8,049
- SEIKO EPSON CORPORATION JP 8,044
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 7,312
- BROTHER INDUSTRIES 6,887
- KYOCERA DOCUMENT SOLUTIONS 5,463
- CANON JP 5,001
- KONICA MINOLTA CORPORATION 4,512
- BROTHER INDUSTRIES JP 3,681