Precision liquid injection system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 24, 2001
Grant Date -
N/A
app pub date -
Nov 3, 1998
filing date -
Nov 4, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A liquid injector comprising a tubular spindle having an open end and a partially closed end, a cylindrical piston, a seal mechanism between the spindle and the piston, a tubular driver sleeve to cause the piston to move towards the spindle closed end, and an internal ratchet mechanism located between the piston and a closed end of the tubular driver sleeve for controlling the degree of rotation of the driver sleeve and providing a positive indication of driver sleeve rotation.
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