Impact mechanism for a hammer tool
AssigneeSnap-on Incorporated
InventorJoshua M. Beer
Life of this patent
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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.
Claims25
An impact mechanism for an impact tool having a housing, the impact mechanism comprising:
- a piston slidably disposed in the housing;
- a disk-shaped spacer composed of a non-magnetic material, wherein the disk-shaped spacer is disposed at an end of the piston and is adapted to transfer an impact force to a tool bit;
- and
- first and second electromagnetic coils disposed between the piston and the housing, wherein the first and second electromagnetic coils are alternately activated to generate respectiv magnetic fields, wherein the piston moves towards the tool bit when the first electromagnetic coil is activated, and the piston moves away from the tool bit when the second electromagnetic coil is activated.
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 disk-shaped spacer composed of a non-magnetic material, wherein the disk-shaped spacer is disposed at an end of the piston and is adapted to transfer impact force to the tool bit;
- and
- first and second electromagnetic coils disposed between the piston and the impact mechanism housing, wherein the first and second electromagnetic coils are alternately activated to generate respective magnetic fields, wherein the piston moves towards the tool bit when the first electromagnetic coil is activated, and the piston moves away from the tool bit when the second electromagnetic coil is activated.
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 nylon sleeve disposed in the impact mechanism housing;
- a piston slidably disposed in the nylon sleeve and adapted to transfer impact force to the tool bit;
- and
- first and second electromagnetic coils disposed between the nylon sleeve and the impact mechanism housing, wherein the first and second electromagnetic coils are alternately activated to generate respective magnetic fields to cause the piston to respectively move in opposing first and second directions within the nylon sleeve.
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, wherein activation of the first electromagnetic coil causes the piston to move towards the tool bit, and activation of the third electromagnetic coil causes the piston to move away from the tool bit.
Dependencies are inferred from the claim text.