Screwing head for screwing the ring nut of a small trigger-type pump on a vessel
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United States of America Patent
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Jan 11, 2011
Grant Date -
Jan 28, 2010
app pub date -
May 9, 2006
filing date -
May 19, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention deals with the field of screwing heads for small trigger-type pumps or triggers and namely for applying, on vessels, triggers equipped with a threaded securing ring nut (2). This screwing head (1) is rotated around a vertical axis through a permanent magnet-type clutch and comprises four rollers (5) which tighten the toothed ring nut (2) when screwing it; said rollers (5) are supported by vertical arms (4) whose axes are arranged at 90.degree. one from the other on a circumference with its center on the rotation axis of the screwing head. The vertical arms (4) and the four rollers (5) are simultaneously carried along a radial direction towards said ring nut through an oscillating movement.
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