Power plants – Pressure fluid source and motor – Pneumatic motor with gas supply or removal device
Patent
1979-02-27
1980-07-22
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Pneumatic motor with gas supply or removal device
60DIG10, 91170R, F15B 1106
Patent
active
042133017
ABSTRACT:
In an apparatus for driving fastening elements, such as bolts and nails, into receiving material, a first or driving piston is mounted in a first chamber through which it is axially displaceable. A pressure converter arrangement is connected to an inlet to the first chamber for supplying the compressed air required for displacing the first piston for driving in a fastening element. The pressure converter includes a storage chamber, a second chamber in communication with the storage chamber and a third chamber. A double headed piston has one head in the second chamber and the other head in the third chamber. The third chamber has a much greater transverse cross-sectional area than the second chamber. Compressed air supplied to the third chamber compresses air in the second chamber which is directed into the storage chamber. From the storage chamber, the compressed air is charged into the first chamber for driving the first piston forwardly for inserting the fastening element.
REFERENCES:
patent: 2351872 (1944-06-01), Parker
patent: 2854953 (1958-10-01), Osborne
patent: 3150488 (1964-09-01), Haley
patent: 3255942 (1966-06-01), Bell et al.
Heeb Othmar
Maier Elmar
Geoghegan Edgar W.
Hilti Aktiengesellschaft
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