Adjustable energy control valve for a fastener driving device
US6039231A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A pneumatic fastener driving device includes an energy control assembly constructed and arranged with respect to a passageway leading to a piston pressure chamber to be manually movable between (1) a first position wherein the passageway is opened fully to communicate a pressure reservoir with the piston pressure chamber thereby permitting the air under pressure to communicate with the piston pressure chamber to provide maximum energy to a drive piston and (2) a second position wherein the passageway is at least partially closed restricting a flow of the air under pressure from the pressure reservoir to the piston pressure chamber thereby reducing energy to the piston while the air under pressure is maintained at a predetermined pressure value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.