Felt-tip pen wth refilling means

Details Felt-tip pen wth refilling means Felt-tip pen wth refilling means

1996-05-16

1997-05-06

Bratlie, Steven A.

Coating implements with material supply

Supply container and independent applicator

Applicator provided with material receiver

401 36, 401131, 401199, 401207, B43K 1100

Patent

active

056264313

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention relates to a device for writing on posters and the like, comprising an inkwell and a felt-tip pen, with the felt-tip pen including a handle member and a felt tip secured therein which has one end thereof extend out of the handle member. A felt-tip pen of this type is known from U.S. Pat. No. 4,614,163.


BACKGROUND OF THE INVENTION

In the prior known felt-tip pen, the felt tip is held in an intermediate piece exchangeably secured to the handle member, and is in abutting engagement with a reservoir structure inside the handle member. In this arrangement, the intermediate piece is of a tapering configuration in the direction of the felt tip. This enables the felt-tip pen to be inserted into a funnel-shaped opening of an inkwell until the tip of the felt tip takes support upon an absorbent body disposed in the inkwell. As a result of capillary action, the ink contained in the inkwell rises in the absorbent body, impregnating the felt tip resting thereon. Capillarity being also present in the felt tip, causing the ink to rise, the reservoir structure in the handle member becomes equally impregnated with ink. The supply of ink consumed by the felt-tip pen is thus replenished automatically during breaks between uses.
When the pen is inserted into the inkwell, it occurs frequently that the felt tip contacts the wall of the funnel, smearing it with ink. This ink is then directly transferred to the outside of the intermediate piece. When the user's fingers hold the felt-tip pen by the forward end in the area of the intermediate piece to resume writing, they will promptly become stained with ink.
A further disadvantage is that the felt-tip pen effects a poor seal or no seal at all when inserted into the funnel. In cases where an excessively narrow funnel is selected, the writing point fails to reach the absorbent body, the felt-tip pen being already stuck short of reaching it, in addition to being wedged considerably. Ink is then prevented from rising up into the felt-tip pen. It is also not possible to accurately match the dimensions of funnel, intermediate piece, length of the writing point and height of the absorbent body, because the writing point is exposed to wear in use, and the absorbent body expands to a greater or lesser degree, depending on the quantity of ink absorbed. In the known embodiment of the felt-tip pen, it is thus necessary ultimately to provide a specified gap between the funnel of the inkwell and the intermediate piece in order to ensure proper functioning. Considering, however, that the felt-tip pen is customarily inserted into the inkwell for storage also during prolonged periods of non-use, this gap logically causes the ink in the inkwell to dry out. Not only is ink thereby wasted uselessly, but the vaporization of the ink also changes its consistency, impairing or even ruining the writing quality and also the replenishment effect. Further, depending on the composition of the ink, noxious fumes are continuously released.
It is an object of the present invention to configure a felt tip pen device of the type initially referred to such as to effect a tight seal on insertion of the felt-tip pen into the opening of a congruent inkwell, without the felt-tip pen becoming wedged in the opening of the inkwell. It is a further object to configure the felt-tip pen in such a fashion as to prevent the outer contour of the felt-tip pen from becoming soiled with ink.
According to the present invention, this object is accomplished in that a groove concentric with the longitudinal axis of the felt tip is provided, the groove encompassing the felt tip immediately behind the protruding end of the felt tip and being open in the direction of this end, thus enabling the felt-tip pen to be introduced into an opening of an inkwell, in which process a collar encompassing the opening engages within the groove, the felt tip encountering an ink-impregnated absorbent body before the collar reaches the bottom of the groove. This embodiment ensures that ink smudges occurring at the open

REFERENCES:
patent: 1878879 (1932-09-01), Mon
patent: 2523879 (1950-04-01), Rosenthal
patent: 3195169 (1965-07-01), Chadbourn
patent: 3480371 (1969-11-01), Lee
patent: 3932044 (1976-01-01), Otake et al.
patent: 4614163 (1986-09-01), Hetzer et al.
patent: 5297883 (1994-03-01), Ozu

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