Damping apparatus for reciprocating pneumatic tools
OwnerChing-Tien Lininventor
Life of this patent
Estimating the term…
Abstract
A damping apparatus for a reciprocating pneumatic tool mainly includes a cylindrical damper. The damper has a front opening and an enlarged rear end. The front opening is attached to a cylinder of the reciprocating pneumatic tool. A damping segment is formed between the front opening and the enlarged rear end of the damper. A spiral slot is defined longitudinally through the enlarged rear end of the damper. Several slots are defined parallel and transversely in the damping segment of the damper and communicate with the spiral slot. The damping segment has gaps arranged longitudinally by the slots such that the structure has high internal damping to attenuate shock that is caused by return movement of a piston in the cylinder. Consequently, a user holding the pneumatic tool can feel comfortable.
Claims7
A damping apparatus mounted in a reciprocating pneumatic tool having a cylinder with a front opening, a rear end and a channel defined through the rear end and communicating with the front opening and a gun-shaped body, the front opening of the cylinder adapted to hold a tool head and a piston movably mounted in the channel, and the damping apparatus comprising:
- a damper adapted to attach to the rear end of the cylinder and the damper having
- a front opening adapted to be attached to the rear end of the cylinder,
- a rear end adapted to mount in the gun-shaped body of the reciprocating pneumatic tool,
- an outer periphery,
- a damping segment with a cross section formed between the front opening and the rear end of the damper,
- a spiral slot defined longitudinally through the rear end of the damper,
- multiple first slots defined transversely in the damping segment and parallel to each other and each first slot communicating with the spiral slot, and
- multiple longitudinal holes defined in the damping segment through the front opening of the damper and communicating with the spiral slot and one of the adjacent first slots, and
- a protector mounted around the damper and adapted to partly mounted in the gun-shaped body around the cylinder, and the protector having
- a hexagonal front end,
- a rear opening facing the damper,
- an outer surface,
- an inner surface with a shoulder,
- multiple exhaust holes radially defined in the hexagonal front end of the protector,
- multiple supply ports defined in the protector near the rear opening of the protector, and
- a central hole defined axially through the hexagonal front end of the protector and adapted for the cylinder passing through the central hole.
Dependencies are inferred from the claim text.