Coating implements with material supply – With means to attach or conform to body of user
Reexamination Certificate
1998-11-30
2001-08-14
Eloshway, Charles R. (Department: 3751)
Coating implements with material supply
With means to attach or conform to body of user
Reexamination Certificate
active
06273626
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a grip for a writing instrument that is fitted to a cylinder barrel of a writing instrument such as a ball point pen, a mechanical pencil, or the like.
2. Description of Background Information
A prior art grip for a writing instrument is a cylinder constructed of a resilient material such as rubber, synthetic resin, or the like, wherein the grip is installed at an extremity of the writing instrument so as to improve the feel when the writing instrument is held with the fingers (discussed in Japanese Patent Publication No. Hei 7-20752).
Another known grip discusses a plurality of plate-like protrusions formed at an outer circumferential surface of the grip (discussed in Japanese Patent Laid-Open No. Hei 10-181274).
The grip of Hei 7-20752 is constructed such that the thickness of the cylinder is uniform over the entire length thereof.
The grip of Hei 10-181274 is constructed such that the height of the plate-like protrusions at the rear section of the grip is high, the outer diameter is large, and the height of the plate-like protrusions decreases toward the front section of the grip and its outer diameter is smaller than at the rear, as shown in FIG. 2 of this Japanese patent document.
Although such a prior art grip has a length corresponding to holding positions which are different in response to different users, the actual holding location ranges from a location near an intermediate part of a longitudinal direction (axial direction) to its forward section (i.e., toward the writing tip of the instrument). That is, as a result of performing an actual test for 50 users, even 48 persons held the grip at a range from the aforesaid location near an intermediate part to its forward section. In other words, only two persons held the grip at a point ranging from a location near the intermediate part of the grip to its rear section. As a person showed fatigue after writing for a long period of time, it was shown that the fingers slid to a forward section of the grip.
Accordingly, the prior art grips described in Hei 7-20752, in which a cylinder having substantially the same thickness over its entire length, and Hei 10-181274, in which an outer diameter decreases toward the front section, had problems such that they each have a surface structure that causes the fingers to easily forwardly slip after fatigue in writing many hours.
SUMMARY OF THE INVENTION
In view of the foregoing, it is an object of the present invention to provide an improved grip for a writing instrument that prevents slippage at an actual holding location.
It is another object of the present invention to provide an improved grip for a writing instrument which facilitates improved cushioning and a superior holding feeling.
Other objects will become more apparent in view of the detailed description and the drawings.
These objects are accomplished by the grip for the writing instrument provided by the present invention.
The grip for the writing instrument of the present invention has a plurality of plate-like protrusions arranged on at least a portion of an outer diameter of a main body, the main body made of resilient member. The projecting height of the plate-like protrusions at a location to be held is made higher than a projecting height at another location.
The holding location may be arranged at a forward section of the grip main body.
In addition, the holding location may be arranged at an intermediate part of the grip main body.
In addition, the plurality of plate-like protrusions may be arranged axially in the grip main body.
In addition, the plurality of plate-like protrusions may be arranged in a circumferential direction of the grip main body.
In addition, gaps may be provided between the grip main body and the cylinder barrel. Further, air may be sealed in the gaps, which may provide cushioning with air resistance.
Accordingly, in accordance with the present invention, the plate-like protrusions protrude a greater amount at a holding location than the protruding of the plate-like protrusions at another location. Thus, the protrusions deform a greater amount at a holding location than at another location, when gripped by the fingers.
In addition, gaps may be present between the grip main body and the writing instrument barrel to which the grip main body is fixed. Thus, when the grip is held with the fingers, the gaps are deformed to cause the finger tips to be more deeply sunk into the spaces.
REFERENCES:
patent: Re. 34194 (1993-03-01), Stowell et al.
patent: D. 240817 (1976-08-01), Funahashi
patent: 2173451 (1939-09-01), Lorber
patent: 2996044 (1961-08-01), Parker
patent: 4601598 (1986-07-01), Schwartz et al.
patent: 4932800 (1990-06-01), Lin et al.
patent: 5056945 (1991-10-01), Klodt
patent: 1511325 (1969-07-01), None
patent: 3406522 (1985-09-01), None
patent: 7-20752 (1995-03-01), None
patent: 10181274 (1998-07-01), None
An English Language abstract of JP 7-20752.
An English Language abstract of JP 10-181274.
Eloshway Charles R.
Greenblum & Bernstein P.L.C.
Zebra Co. Ltd.
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