Marking instruments
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 22, 2000
Issued Date -
N/A
app pub date -
Jun 12, 1998
filing date -
Dec 15, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A marking instrument includes a reservoir chamber for marking fluid, a channel for conducting marking fluid from the reservoir chamber for supply to a marking tip, and a valve for controlling supply of fluid through the channel. The valve includes a seat member with a port, a diaphragm having an edge for cooperation with the seat member to close the port, and a free surface extending from the edge to a position at which the diaphragm is held against movement. The seat member is movable to deflect the diaphragm for opening the valve. The free diaphragm surface extends away from the edge at an angle of 45.degree. to 85.degree. when the valve is closed.
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Family
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Cited Art Landscape
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