De Poan Pneumatic Corp.

Yi-Wei Wen

I-Tsung Wu

Shun-Yao Yang

Tong Wang

Meng-Jen Chiu

The present invention provides a pneumatic hand tool with adjustable operating angle, comprising a grip body and a tool head body interconnected with each other. The grip body has a grip flow channel, and said tool head body has a tool head flow channel. The grip body and said tool head body are interconnected through two rotary joint faces to form a joint portion capable of adjustment of the operating angle. The two rotary joint faces respectively have connecting areas for uniform circumferential motion and high pressure air ports configured along the rotation center. And the two rotary joint faces are inclined to facilitate adjustment of the operating angle of said tool head, and to ensure good air tightness of the high pressure air ports inside the joint portion.

Pneumatic hand tool with adjustable operating angle

A gas passage switching structure for a pneumatic rotary hand tool includes a pneumatic motor and a revolving valve disposed in a device case. The pneumatic motor has an input ending surface. A forward gas inlet and a reverse gas inlet are formed and spaced apart on the input ending surface. The revolving valve has a gas supply surface. A gas supply port and a discharge port are formed and spaced apart on the gas supply surface. The gas supply surface and the input ending surface are arranged along an axis line in the device case adjacent or in contact with the arrangement so that it allows the pneumatic motor to drive the forward and reverse rotation by the high pressure air flow along the fluid passage in the axis line direction.

Gas passage switching structure for pneumatic rotary hand tool

A pneumatic rotary tool includes a housing, a directional changeover mechanism, and a speed regulating mechanism. The housing includes a top body and a handle. The top body is fitted with a pneumatic motor. The handle defines a forward air channel, a reverse air channel, and an air supply passage. The air supply passage is controlled by a valve being operated by a trigger so that the air supply passage communicates with the forward and reverse air channels. The direction changeover mechanism is mounted in the top body along a transverse line and passes through the forward and reverse air channels for changing the rotational direction of the pneumatic motor. The speed regulating mechanism is mounted in the handle for adjusting the flow of compressed air entering the forward air channel. The tool can be operated conveniently to change the rotational direction and the output torque of the pneumatic motor.

Growing community of inventors

Taipei Hsien, Taiwan

Yi-Wei Wen