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US 2025/0153318 A1Published application
Wrench for operating a valve
AssigneeGrDF
InventorPhilippe Frontero
Life of this patent
Estimating the term…
Abstract
A wrench for operating a valve arranged in an opening comprises: —a hollow operating shaft, which extends from a proximal end to a distal end; —an epicyclic gear train, arranged at the distal end of the operating shaft, and configured to apply a torque, referred to as output torque, to a valve arranged in an opening, as soon as a torque, referred to as input torque, is exerted on the operating shaft, the output torque being greater than the input torque.
Claims17
An operating wrench for a valve disposed in an opening, the operating wrench comprising:
- a hollow operating shaft, which extends from a proximal end to a distal end;
- and
- an epicyclic gear train, arranged at the distal end of the operating shaft, and configured to impose an output torque on a valve arranged in an opening when an input torque is exerted on the operating shaft, the output torque being greater than the input torque, the epicyclic gear train being of a parallel epicyclic gear train and comprising a planetary gear, a crown gear and at least one satellite gear, the at least one satellite gear being carried by a planetary carrier pivotably connected to the operating shaft, the planetary gear being connected in a fixed manner to the operating shaft and configured to mesh with the at least one satellite gear.
Dependencies are inferred from the claim text.