Details of chucks, toolholder shanks or tool shanks

Filing statistics

CPC B23B 2231/00 belongs to the parent subclass B23B, which recorded 66,933 patent applications worldwide between 2013 and 2023. Annual filings declined from 4,756 in 2013 to 4,707 in 2023 (-1%), peaking at 7,816 applications in 2018. The most active applicants in class B23 are ITW (ILLINOIS TOOL WORKS) (3,642 applications), DISCO CORPORATION (3,316 applications) and FANUC (3,111 applications).

Source: EPO PATSTAT, worldwide filings

27 direct subcodes

Child Classifications

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B23B 2231/02 Features of shanks of tools not relating to the operation performed by the tool
B23B 2231/04 Adapters
B23B 2231/06 Chucks for handtools having means for opening and closing the jaws using the driving motor of the handtool
B23B 2231/08 Chucks for shanks of tools having means for reducing the bending of the retained shanks
B23B 2231/10 Chucks having data storage chips
B23B 2231/12 Chucks having means to amplify the force produced by the actuating means to increase the clamping force
B23B 2231/14 Chucks with clamping force limitation means
B23B 2231/20 Collet chucks
B23B 2231/22 Compensating chucks, i.e. with means for the compensation of irregularities of form or position
B23B 2231/24 Cooling or lubrication means
B23B 2231/26 Detection of clamping
B23B 2231/28 Dust covers
B23B 2231/30 Chucks with four jaws
B23B 2231/32 Guideways for jaws
B23B 2231/34 Jaws
B23B 2231/36 Sealed joints
B23B 2231/38 Keyless chucks for hand tools
B23B 2231/40 Chucks having a pivotal retention element in the form of a laterally acting cam
B23B 2231/42 Chucks operated by a motor which is movable to engage with, or disengage from, the chuck operating means
B23B 2231/44 Nose pieces

Top Applicants

Top 10 applicants by patent filingsfor class B23, 2013–2023, worldwide · Source: EPO PATSTAT

ITW (ILLINOIS TOOL WORKS) US 3,642
DISCO CORPORATION JP 3,316
FANUC JP 3,111
ROBERT BOSCH DE 2,711
FANUC 2,163
GE (GENERAL ELECTRIC COMPANY) US 2,113
ISCAR IL 1,516
SIEMENS DE 1,459
LINCOLN GLOBAL US 1,433
KOBE STEEL JP 1,423