Elongated-member-driving apparatus – With means to move or guide member into driving position – Including supply magazine for constantly urged members
Patent
1984-10-22
1986-09-02
Bell, Paul A.
Elongated-member-driving apparatus
With means to move or guide member into driving position
Including supply magazine for constantly urged members
92 85R, 18832222, 173DIG2, B25C 104
Patent
active
046091351
ABSTRACT:
The present invention relates to a sound-dampened driving apparatus for fasteners wherein a main valve means is arranged above a working cylinder of the apparatus and movable within a cylindrical bore. When the main valve means is in its lower at rest position, the main valve means separates the working cylinder from a source of compressed air and connects the cylinder to the atmosphere. When the main valve means is in its upper actuating position, the working cylinder is connected to the source of compressed air and the valve means blocks the cylinder connection to the atmosphere. The space above the main valve member within the cylindrical bore is capable of being alternately connected to either the atmosphere or compressed air, and includes a sound dampening means arranged in the space above the main valve member.
REFERENCES:
patent: 3086207 (1963-04-01), Lingle et al.
patent: 3162097 (1964-12-01), Allen et al.
patent: 3205787 (1965-09-01), Volkmann
patent: 3352471 (1967-11-01), Fisher
patent: 3387541 (1968-06-01), Bade
patent: 3403600 (1968-10-01), Bade
patent: 3496840 (1970-02-01), Wandel et al.
patent: 3969989 (1976-07-01), Maurer et al.
patent: 4441644 (1984-04-01), Farian
Bell Paul A.
Joh. Friedrich Behrens AG
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