Coating implements with material supply – Projectable and retractable tool – Including retraction spring and projected-position retainer
Reexamination Certificate
2002-06-03
2003-04-29
Walczak, David J. (Department: 3751)
Coating implements with material supply
Projectable and retractable tool
Including retraction spring and projected-position retainer
C401S110000, C401S111000
Reexamination Certificate
active
06554518
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a writing instrument, and more particularly to a writing instrument with a retraction device.
2. Description of Related Art
A writing instrument is an important tool used to write, record things or draw. Generally speaking, a conventional writing instrument comprises a hollow barrel, a writing implement and a cap. The writing implement is mounted in the hollow barrel and has a writing tip extending out of the hollow barrel. The cap is detachably mounted on one end of the hollow barrel to keep the writing tip of the writing implement from being damaged. However, the cap of the writing instrument is easily lost. Consequently, a writing instrument with a retraction device is manufactured and marketed.
The conventional writing instrument with a retraction device can make the writing tip of the writing implement draw back into the hollow barrel such that a cap is unnecessary. However, a button to operate the retraction device is usually located on the top of the hollow barrel. This location is inconvenient for a person whose fingers are handicapped.
The present invention has arisen to mitigate and/or obviate the disadvantages of the two conventional writing instruments.
SUMMARY OF THE INVENTION
The main objective of the present invention is to provide an improved writing instrument with a retraction device.
To achieve the objective, the writing; instrument with a retraction device in accordance with the present invention comprises a hollow barrel, a tubular grip, a writing implement and an elastic member. The hollow barrel has an upper end and a lower end. The grip is attached to the lower end of the hollow barrel. The writing implement is mounted in the hollow barrel and the grip and has an upper portion, a lower portion, an upper end, a lower end and a writing tip. The elastic member is mounted around the lower portion of the writing implement. The grip has an upper end and a lower end. A rigid sleeve is mounted in the lower end of the grip. The writing tip is formed on the lower end of the writing implement and selectively extending through the rigid sleeve in the grip. The elastic member abuts the rigid sleeve and is compressed by the rigid sleeve.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 4381158 (1983-04-01), Garganese
patent: 4943175 (1990-07-01), Heim
patent: 5413428 (1995-05-01), Kageyama
patent: 6257787 (2001-07-01), Kirk
Jones Tullar & Cooper P.C.
Walczak David J.
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