content_image/881171.jpg content_image/881170.jpg content_image/881149.jpg
<img src='content_image/881171.jpg'>

(19) 

(12) EUROPEAN PATENT APPLICATION 

(43) Date of publication: 07.04.2021 Bulletin 2021/14 

(21) Application number: 20201940.2 

(22) Date of filing: 22.12.2017 

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR 

(30) Priority: 28.12.2016 JP 2016256590 

(62) Document number(s) of the earlier application(s) in accordance with Art. 76 EPC: 19166133.9 / 3 549 721 17210101.6 / 3 348 356 

(71) Applicant: Max Co., Ltd. Tokyo 103-8502 (JP) 

(54) AIR DUSTER STRUCTURE AND DRIVING TOOL 

(57) An air duster structure that is configured to jet compressed air out of a nozzle, includes a flow amount adjustment mechanism which is configured to adjust an amount of air jetted out of the nozzle. The flow amount adjustment mechanism includes: a pipe line for circulat- ing air;a valve memberdisposed inside the pipeline and being movable; and a throttle portion configured to grad- 

<img src='content_image/881170.jpg'>

(51) Int Cl.: B25C 1/04 (2006.01) 

(72) Inventor: KAZUYA, Mochizuki Tokyo, 103-8502 (JP) 

(74) Representative: Samson & PartnerPatentanwälte mbB Widenmayerstraße 6 80538 München (DE) 

Remarks: This application was filed on 15-10-2020 as a divisional application to the application mentioned under INID code 62. 

ually change an area of a flow channel in which air cir- culates,with a movementofthe valve member,to control aflow amountoftheairin the pipeline.The throttle portion isstructured so asto increase the areaofthe flow channel at an accelerated rate when the valve member moves in a direction that opens the pipe line. 

<img src='content_image/881149.jpg'>

# (11) EP 3 800 011 A1 

