Closure cap for a writing instrument
AssigneeJ. S. Staedtler GmbH & Co.
InventorsBernhard Endres, Klaus Glombitza
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Abstract
A closure cap for a writing instrument such as a ink pen and the like has an outer generally cylindrical cap housing within which is a sealing sleeve having a closed end to close one end of the cap housing. A slide sleeve of a hard rigid material is retained against axial movement within the sealing sleeve. A closure member of a soft resilient durable material is axially slideable within the slide sleeve and is acted upon by spring means which may include a helical spring or axially extending resilient strips.
Claims9
A closure cap for a writing instrument comprising an outer cap housing, a sealing sleeve of a soft resilient durable material fitted within said cap housing, a tubular open ended slide sleeve of hard rigid material retained against axial movement within said sealing sleeve, a closure member of a soft resilient durable material confined within and axially displaceable within said slide sleeve and having an end engageable with a tip of a writing instrument inserted into said cap housing, said slide sleeve disposed between said sealing sleeve and said closure member, and spring means within said slide sleeve having one end abutting said sealing sleeve and another acting against said closure member toward said tip.
Dependencies are inferred from the claim text.