Impact mechanism for a hammer tool
AssigneeSnap-on Incorporated
InventorJoshua M. Beer
Life of this patent
Estimating the term…
Abstract
An impact mechanism for an impact tool that includes a housing, a piston slidably disposed in the housing and adapted to transfer impact force to a tool bit, and electromagnetic coils disposed between the piston and the housing. The electromagnetic coils are alternately activated to generate respective magnetic fields to cause the piston to move within the housing.
Claims28
An impact mechanism for an impact tool having a housing, the impact mechanism comprising:
- a piston slidably disposed in the housing;
- a spacer composed of a non-magnetic material, wherein the spacer is disposed at an end of the piston and is adapted to transfer an impact force to a tool bit;
- and
- forcing and returning electromagnetic coils disposed between the piston and the housing, wherein the forcing and returning electromagnetic coils are alternately activated to generate respective magnetic fields to cause the piston to move.
(canceled)
An impact tool having a housing adapted to couple with a tool bit via a tool bit holding mechanism, the impact tool comprising:
- an impact mechanism disposed in the housing and including:
- an impact mechanism housing;
- a piston slidably disposed in the impact mechanism housing;
- a spacer composed of a non-magnetic material, wherein the spacer is disposed at an end of the piston and is adapted to transfer impact force to the tool bit;
- and
- forcing and returning electromagnetic coils disposed between the piston and the impact mechanism housing, wherein the forcing and returning electromagnetic coils are alternately activated to generate respective magnetic fields to cause the piston to move.
(canceled)
An impact hammer tool comprising:
- a housing adapted to couple with a tool bit via a tool bit holding mechanism;
- and
- an impact mechanism disposed in the housing and including:
- an impact mechanism housing;
- a piston slidably disposed in the impact mechanism housing and adapted to transfer impact force to the tool bit;
- forcing and returning electromagnetic coils disposed between the piston and the impact mechanism housing, wherein the forcing and returning electromagnetic coils are alternately activated to generate respective magnetic fields to cause the piston to move;
- and
- a nylon sleeve disposed between the piston and the forcing and returning electromagnetic coils.
An impact mechanism for an impact tool with a housing, comprising:
- a piston slidably disposed in the housing and adapted to transfer an impact force to a tool bit;
- and
- first, second, and third electromagnetic coils disposed between the piston and the housing, wherein the first, second, and third electromagnetic coils are alternately activated to generate respective magnetic fields to cause the piston to move.
Dependencies are inferred from the claim text.