Writing instrument with sealing cap and additional rearward seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 16, 1986
Grant Date -
N/A
app pub date -
Jan 27, 1984
filing date -
Jan 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A writing instrument comprises a barrel having a front opening (216), a writing member (217) having a writing tip (220) on a front end thereof and disposed in the barrel for back-and-forth movement therein, a mechanism disposed between said barrel and the writing member (217) for locking the writing member (217) in an advanced position and returning the writing member (217) in a retracted position, a sealing body (206) pivotable about a single point in the vicinity of the opening (216) for opening and closing the writing tip (220), bias spring (213) disposed between the sealing body (206) and the barrel for normally urging the sealing body (206) to seal the writing tip (216), the writing member (217) pushing aside the sealing body (206) to release the writing tip against a force tending to seal the latter, the writing tip (220) being prevented from contacting the sealing body (206) when the writing member (217) advances, and a seal member for providing a seal between the barrel and the writing member (217) at a position behind the sealing body (216).
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Cited Art Landscape
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