Arrangement for cooling an explosive charge-driven setting gun
US3997096A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1975 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Mar 7, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In an explosive charge-driven setting gun used for inserting fastening elements, a piston is axially displaced through a piston guide chamber by the gases generated when a cartridge is exploded within the rearward end of the chamber. To cool the setting gun at least one opening is provided from the piston guide chamber so that the heated gases generated when a cartridge is exploded can be removed after the gases have started the axial movement of the piston. The gases can be directed into the atmosphere creating a suction effect so that cooling air is drawn into the piston guide chamber. Alternatively, the gases can be cooled by passing them through a heat exchanger located externally of the chamber and then returning the cooled gases into the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.