Hand-held demolition tool

1. A hand-held pneumatic scabbler for demolition and resurfacing operations, said scabbler comprising a cylinder having at least one piston for receiving a tool bit for acting on a working surface; a forward and a rear handle to be held by an operator for maneuvering the scabbler during operation, said forward handle being arranged between the cylinder and said rear handle, said forward handle having a connection that is damped for vibration; a tube for supplying pressurized gas to said cylinder, one end of said tube being connected to the cylinder through a flexible coupling engaging the cylinder, the other end of said tube being coupled to a source of pressurized gas; wherein the flexible coupling is designed to allow only limited torsional movement of the cylinder, and the end of the tube connected to the cylinder, relative to the flexible coupling; said flexible coupling comprising: 1) an axle spindle arranged with its direction of longitudinal extension along a central axis extending through said flexible coupling, and a swivel arranged with play between it and the axle spindle, 2) a race with balls arranged to lock the swivel in an axial direction on the axle spindle and to make possible approximately friction-free pivot action between the axle spindle and the swivel, and 3) a locking pin and a corresponding locking groove, said locking pin and said locking groove being arranged to provide said limited torsional movement of the cylinder.

2. The hand scabbier according to claim 1 , wherein the hand scabbier further comprises a valve housing between the cylinder and the rear handle, and the flexible coupling is arranged between the cylinder and the valve housing.

3. The hand scabbier according to claim 1 , wherein the vibration-damped connection connects the forward handle with the tube.

4. The hand scabbier according to claim 3 , wherein the vibration-damped connection is connected to the tube at a position that is located on that half of the longitudinal extension of the tube that lies most closely to the rear handle.

5. The hand scabbler according to claim 1 , wherein the hand scabbler further comprises a valve housing between the cylinder and the rear handle, and the vibration-damped connection connects the forward handle with the valve housing.

6. The hand scabbler according to claim 1 , wherein the forward handle has a longitudinal direction of extension coinciding with the central axis extending through said flexible coupling.

7. The hand scabbier according to claim 1 , wherein said flexible coupling is arranged, at least in part, within said cylinder.