Ordnance – Explosive operated apparatus
Patent
1996-12-09
1998-06-16
Carone, Michael J.
Ordnance
Explosive operated apparatus
227 10, B25C 114
Patent
active
057674345
ABSTRACT:
An explosive powder charge operated setting tool includes a housing (1), a piston guide (13) for a driving piston (9) located in the housing. The driving piston (9) can be propelled from an initial rearward position through a bore (18) in the piston guide (13) into a forward driving position by gases generated from an ignited cartridge charge (12) in a cartridge chamber (10) located rearwardly of the initial rearward position of the driving piston. A channel (18a, 18b) is located in the housing in flow communication with the cartridge chamber and communicating with the guide bore (8) in the piston guide (13). A check valve (5) is positioned in the channel (18a, 18b) and forms a storage space closed to the ambient atmosphere and made up of a section (18a) of the channel (18a, 18b) closer to the forward driving position of the driving piston and of the guide bore (8). The check valve (5) can be closed by the gas in the storage space.
REFERENCES:
patent: 3112487 (1963-12-01), Hilti
patent: 3645091 (1972-02-01), Ivanov et al.
patent: 3744240 (1973-07-01), Henning et al.
patent: 4655380 (1987-04-01), Haytayan
patent: 4711385 (1987-12-01), Jochum
patent: 5170922 (1992-12-01), Ehmig et al.
patent: 5538172 (1996-07-01), Jochum et al.
Hirtl Anton
Sprenger Markus
Carone Michael J.
Hilti Aktiengesellschaft
Montgomery Christopher K.
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