Air-input speed regulator for pneumatic tool
US6644419B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Dec 27, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Dec 27, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25F5/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An air-input speed regulator for pneumatic tool includes an air intake connector having a seat and a tubular portion, and a regulating knob rotatably mounted around the connector. An axial channel is provided at one side of the seat of the connector for elastically receiving a steel ball therein, and front and rear air holes are axially sequentially formed on the tubular portion. The regulating knob includes a tube portion, a front end of which is formed into steps gradually lowered in a circumferential direction, and hollow projections spaced along an inner wall surface corresponding to the steps for engaging with the steel ball on the connector to locate the regulating knob in place. By turning the regulating knob, one of the steps is brought to cover the rear air hole by different extent and therefore changes the amount and speed of air flown to the pneumatic tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.