Writing instrument
AssigneeBinney & Smith Inc.
InventorsDouglas A. Brand, George J. Nagle, Vito Niosi, Francis G. Schiro
Life of this patent
Estimating the term…
Abstract
The writing instrument includes a cap and a barrel. The cap includes threads which engage the threads on the barrel. In addition, the cap includes protrusions which engage protrusions on the barrel. The threads are designed so that the cap will engage the stop surface in approximately one third of a revolution. When the protrusions move past each other, the user perceives a tactile and/or audible indication. This indication advises the user that the cap has been fully attached to the barrel. In addition, the cap includes ribs on the exterior surface to assist the user in grasping the cap and in rotating the cap.
Claims37
A marker for marking on objects comprising:
- a cap, the cap has an exterior surface, and an interior surface, the interior surface has a first thread,
- a barrel, the barrel has a first end and a second end, the first end includes a second thread,
- the first thread engages the second thread when the cap is positioned on the barrel, the first thread has a length, the interior surface has a first circumference, the second thread has a length, the barrel has an exterior surface having a second circumference,
- a nib, the nib selected from the group comprising polyester fibers, nylon fibers, or sintered ultra high molecular weight polyethylene,
- ink, and
- the cap is ventilated, the cap is attached to the barrel to seal the end of the barrel to prevent the nib from drying out the cap is removable from the barrel, the cap permits air flow if the cap became lodged in the throat of the user.
A cap for a marker, the marker having a barrel and a nib, the cap comprising:
- an exterior surface;
- an interior surface;
- a sealing surface to create a seal at the end of the barrel to prevent the nib from drying out;
- a thread on the interior surface
- the thread has a length, the interior surface has a circumference;
- and
- the cap is ventilated, the cap permits airflow if the cap became lodged in the throat of the user.
Dependencies are inferred from the claim text.