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IPC Subgroup
B25B 23/14

Arrangement of torque limiters or torque indicators in wrenches or screwdrivers

Introduced: September 1968

Last revised: January 2006

Full Title

Details of, or accessories for, spanners, wrenches, screwdrivers > Arrangement of torque limiters or torque indicators in wrenches or screwdrivers

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
Subclass:
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING

Related Keywords

wrenches or screwdrivers which limit the TORQUE applied

9 direct subcodes

Child Classifications

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  • B25B 23/145 specially adapted for fluid operated wrenches or screwdrivers
  • B25B 23/147 specially adapted for electrically operated wrenches or screwdrivers
  • B25B 23/15 having a mechanism to mark the work when the selected torque is applied to the work
  • B25B 23/151 the motor drive having condition-responsive means to regulate the power output of a motor driving the work-contacting component
  • B25B 23/153 having a force-transmitting element which is permanently deformed upon application of an excessive amount of torque
  • B25B 23/155 wherein the work-contacting means is released from torque-transmitting engagement with the work, when a selected torque is exceeded
  • B25B 23/157 having torque controlled clutch-type arrangements
  • B25B 23/159 the work-contacting component comprising or being connected to a resilient structural member, which remains rigid and fully force transmitting until a selected torque is exceeded or which signals excessive torque

Top Applicants

Top 10 applicants by patent filingsfor class B25, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 4,635
  2. FANUC JP 3,353
  3. ROBERT BOSCH DE 2,950
  4. LG ELECTRONICS KR 2,397
  5. HILTI LI 2,243
  6. FANUC 2,234
  7. SEIKO EPSON CORPORATION 2,131
  8. KAWASAKI HEAVY IND JP 1,940
  9. MAKITA CORPORATION 1,851
  10. SAMSUNG ELECTRONICS COMPANY KR 1,562