Pressurized writing device with needle weight having valve means
OwnerKurt Heldinventor
Life of this patent
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Abstract
The invention relates to a writing device comprising a storage tank for Indian ink or another writing medium, a housing which is open in the direction of the tank, a tubular pen which is arranged on the housing, a needle which is axially displaceable in the tubular pen, and a drop weight member which is attached to the needle and is displaceable in the interior of the housing. The tank contains a propellant which is subjected to its own vapor pressure and acts directly on the writing medium, and the end of the tubular pen located in the interior of the housing is designed as a valve seat onto which a valve body formed on the oppositely located end of the drop weight member can be sealingly positioned.
Claims10
A writing device comprising:
- a storage tank for Indian ink or another writing medium;
- a propellant in the storage tank in the form of a liquid gas that is subject to its own vapor pressure and that acts directly on the writing medium contained in said tank;
- a housing connected to the storage tank and open in the direction of said tank;
- a tubular pen arranged on the housing, where the end of said pen situated in the interior of said housing is designed as a valve seat;
- a drop weight member, displaceable in the interior of the housing, having at one end a valve body situated opposite the valve seat formed at the end of the tubular pen, so that said valve body can be sealingly positioned onto said valve seat;
- and
- a needle, attached to the drop weight member, that is axially displaceable in the tubular pen and arranged so that it may act on said drop weight member to move the valve body from its closed, sealed position of the valve seat to an open position allowing the writing medium to flow through said pen.
Dependencies are inferred from the claim text.