US 10,889,143 B2 · Refillable writing instrument

Abstract

The present invention, in general, describes a refillable writing instrument. The writing instrument may comprise one or more master reservoir, one or more slave reservoir, one or more slave reservoir gate and one or more master reservoir gate. The slave reservoir may have reducing cross-section, facilitating fluid flow towards nib of the writing instrument. The slave reservoir gate may comprise at least one of blocking element, blocking element seat, one or more gates, one or more covers and a combination thereof. The slave reservoir gate provides a connection between the master reservoir and the slave reservoir. Further, the blocking element rests over the blocking element seat due to gravity, restricting return flow of the fluid to the master reservoir. The master reservoir gate facilitates clean, easy and fast refilling of master reservoir using fluid container or fluid nozzle without the need of opening the master reservoir cap.

Claims14

Dependent claims

A writing instrument (100) comprising:

one or more slave reservoir (103), having a reducing cross-sectional area facilitating fluid flow towards nib;
one or more master reservoir (101);
one or more slave reservoir gate (102) comprising at least one of one or more blocking element (109), one or more blocking element seat (111), one or more gates (110), one or more covers (107, 108) and a combination thereof, wherein the one or more slave reservoir gate (102) provides a connection between the one or more master reservoir (101) and the one or more slave reservoir (103);
wherein displacement of the one or more covers (108) within a guide cover (107) when the one or more slave reservoir (103) is filled with a predefined level of fluid;
wherein the displacement of the one or more covers (107) stop the fluid supply to the one or more slave reservoir (103);
wherein the one or more blocking element (109) rests over the one or more blocking element seat (111) thereby restricting return flow of the fluid to the one or more master reservoir (101), from the one or more slave reservoir (103) to the one or more master reservoir (101).

3 more elements

Dependencies are inferred from the claim text.

Refillable writing instrument

Life of this patent

Refillable writing instrument

Life of this patent

Abstract

Claims14