Hammer-activated, powder-actuated drive tool
US4830252A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1986 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jul 23, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/146
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention concerns improvements in a hammer-activated, powder-actuated drive tool comprising an elongated tubular housing, a tubular piston guide telescopically received extending from the front end of the housing, a piston telescopically movable within the piston guide, a chamber secured to the rear end of the piston guide for mounting a power load therein, and an activating assembly mounted on the tubular housing rearwardly of the chamber and comprising an elongate member slidably mounted relative to the housing and having a rear end extending outwardly of the housing at the rear end thereof and a forward end extending within the housing for contact with a power load mounted within the chamber. One improvement comprises providing the tubular housing with an internal bushing for slidably mounting the elongate activating member formed as a one-piece integrally molded member which experiences substantially no mechanical loading due to the activation of the power load. A further improvement comprises the provision of a retaining member for retaining a power load within the chamber without regard for the orientation of the tool, when the piston guide is in a retracted position. Ye…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.