(19)
(11) EP 4 338 892 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
08.05.2024 Bulletin 2024/19

(43) Date of publication:
20.03.2024 Bulletin 2024/12

(21) Application number: 23179821.6

(22) Date of filing: 16.06.2023
(51) International Patent Classification (IPC): 
B25F 5/00(2006.01)
B26B 15/00(2006.01)
B23D 23/00(2006.01)
 B23D 29/00(2006.01)
H01R 43/042(2006.01)
(52) Cooperative Patent Classification (CPC):
B25F 5/005; B23D 29/00; B26B 15/00; B25F 5/00; B23D 23/00
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 17.06.2022 US 202263366580 P

(71) Applicant: Milwaukee Electric Tool Corporation
Brookfield, WI 53005 (US)

(72) Inventors:
  • RENTMEESTER, Mathew R.
    Milwaukee, 53222 (US)
  • REEVE, John N.
    Milwaukee, 53202 (US)
  • GARCES, Daniel R.
    Waukesha, 53189 (US)
  • MACH, Brennan L.
    Milwaukee, 53202 (US)
  • FREY, Adam C.
    Racine, 53402 (US)
  • HYDE, J. Brian
    Brookfield, Wisconsin 53045 (US)
  • SNYDER, T. Harrison
    Pewaukee, Wisconsin 53072 (US)

(74) Representative: Forresters IP LLP 
Skygarden Erika-Mann-Straße 11
80636 München
80636 München (DE)

   


(54) POWER TOOL HYDRAULIC SYSTEM


(57) The present disclosure provides a power tool including a housing and a hydraulic drive assembly at least partially supported in the housing. The housing includes a handle that supports a switch that activates the tool. The hydraulic drive assembly includes a pump assembly operably coupled to the motor assembly, a reservoir configured to contain hydraulic fluid in fluid communication with the pump assembly and in which a baffle is supported, a cylinder in fluid communication with the pump assembly which supports an auto-return valve therein, and a piston disposed in the cylinder and biased to a first position by a piston spring. The pump assembly includes a manifold housing that at least partially defines an inlet passageway that fluidly communicates the pump assembly and the cylinder and supports an inlet check valve.