Hammer-activated fastener tool for driving fastener projectiles
US4890778A · kind A · utility
Inventor
Key dates
| Filing date | Apr 29, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Apr 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/146
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power-actuated fastener tool for the driving of a fastener object into hard material such as concrete or metal, the tool being of a type having a relatively movable barrel and housing components, the barrel carrying a power load chamber body and a relatively movable piston member which in muzzleward movement drives the fastener object, and on breechward movement achieves ejection of the spent power load cartridge; and the housing carries a movable firing pin assembly. The housing is provided with an offset axially-extending wall, and its opposite ends serve as abutments co-opereative with a transverse pin, carried by the piston and extending through a slot in the barrel wall, to achieve various operative features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.