Patent ID: 9139055
Filing Date: 2015-09-22
Classification: B60C

Abstract:
1. An operating head for removing and fitting wheel tires for vehicles, comprising: a support arrangement configured to be removably connected to a lower end of a mobile arm of a tire-changing machine, said support arrangement comprising at least a portion shaped to define a resting element positionable close to a section of an edge of a wheel rim during removal of a tire therefrom; a removal tool having a substantially hook-shaped free extremity, attached to a first end of said support arrangement and adapted for moving between an extended fastening-on position and a retracted position of extraction; and an actuator device pivotally attached to a second end of said support arrangement and configured to actuate said tool, said actuator device being adapted for moving said tool between said fastening-on position and said extraction position, said actuator device comprising a first portion connected with said support arrangement, and a second portion sliding with respect to said first portion along a substantially straight direction and connected with said tool; and a quick coupling arrangement connecting the support arrangement with the actuator device, the quick coupling arrangement being fixable to the mobile arm, the quick coupling device comprising a sleeve configured to be connected to the mobile arm of the tire changing machine and a securing element for rotatably securing a resting element on the sleeve, the securing element being a free turning cylindrical ring nut fitted on the sleeve, the quick coupling device further comprising an engagement element placed in between said support device and said sleeve, the engagement element comprising coupling parts which comprises a pin overhanging horizontally from said engagement element and engaging at least a corresponding vertical groove in said sleeve, wherein said securing element comprises the cylindrical ring nut turnably fitted on said sleeve and having a substantially L-shaped slot for introduction and engagement of said pin.