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US 2020/0101786 A1Published application
Ballpoint dry-erase marker
AssigneeInternational Business Machines Corporation
InventorKhoi-Nguyen D. Tran
Life of this patent
Estimating the term…
Abstract
A dry-erase marker comprising a cylindrical housing configured to store an ink and a conic housing coupled to the cylindrical housing on a first end and having a socket on a second end. The dry-erase marker further comprising a marker head contained in the socket of the conic housing, where the marker head comprises a polymeric material and a surface topology. The conic housing is configured to transfer the ink from the cylindrical housing to the marker head, and the marker head is configured to transfer the ink to a dry-erase board by rotating in the socket.
Claims22
A dry-erase marker comprising:
- a cylindrical housing configured to store an ink;
- a conic housing coupled to the cylindrical housing on a first end and having a socket on a second end;
- a spherical marker head contained in the socket of the conic housing, wherein the spherical marker head comprises a polymeric material, wherein the spherical marker head comprises a plurality of circular depressions distributed about a surface of the spherical marker head;
- a composite plunger in a reservoir of the cylindrical housing and configured to pressurize the ink in the cylindrical housing using a gravity-based mechanism, wherein the composite plunger comprises a thermoplastic matrix phase and a metal particulate reinforcement phase, wherein the composite plunger comprises a weep hole extending through the thickness of the composite plunger along a longitudinal axis of the composite plunger, and wherein the composite plunger is coated with an inert material that is configured to reduce reactivity between the ink and the composite plunger;
- and
- wherein the conic housing is configured to transfer the ink from the cylindrical housing to the spherical marker head, and wherein the spherical marker head is configured to rotate in the socket in order to apply a shear force to the ink and transfer the ink to a dry-erase board that is in contact with the spherical marker head.
3 more elements
(canceled)
A dry-erase marker comprising:
- a cylindrical housing configured to store an ink;
- a conic housing coupled to the cylindrical housing on a first end and having a socket on a second end;
- a spherical marker head contained in the socket of the conic housing, wherein the spherical marker head comprises a polymeric material, wherein the spherical marker head comprises a plurality of microfibers distributed about a surface of the spherical marker head;
- a composite plunger in a reservoir of the cylindrical housing and configured to pressurize the ink in the cylindrical housing using a gravity-based mechanism, wherein the composite plunger comprises a thermoplastic matrix phase and a metal particulate reinforcement phase, wherein the composite plunger comprises a weep hole extending through the thickness of the composite plunger along a longitudinal axis of the composite plunger, and wherein the composite plunger is coated with an inert material that is configured to reduce reactivity between the ink and the composite plunger;
- and
- wherein the conic housing is configured to transfer the ink from the cylindrical housing to the spherical marker head, and wherein the spherical marker head is configured to rotate in the socket in order to apply a shear force to the ink and transfer the ink to a dry-erase board that is in contact with the spherical marker head.
3 more elements
(canceled)
A dry-erase marker comprising:
- a cylindrical housing configured to store an ink;
- a conic housing coupled to the cylindrical housing on a first end and having a socket on a second end;
- a spherical marker head contained in the socket of the conic housing, wherein the spherical marker head comprises a polymeric material, wherein the spherical marker head comprises a plurality of continuous grooves distributed about a surface of the spherical marker head;
- a composite plunger in a reservoir of the cylindrical housing and configured to pressurize the ink in the cylindrical housing using a gravity-based mechanism, wherein the composite plunger comprises a thermoplastic matrix phase and a metal particulate reinforcement phase, wherein the composite plunger comprises a weep hole extending through the thickness of the composite plunger along a longitudinal axis of the composite plunger, and wherein the composite plunger is coated with an inert material that is configured to reduce reactivity between the ink and the composite plunger;
- and
- wherein the conic housing is configured to transfer the ink from the cylindrical housing to the spherical marker head, and wherein the spherical marker head is configured to rotate in the socket in order to apply a shear force to the ink and transfer the ink to a dry-erase board that is in contact with the spherical marker head.
3 more elements
Dependencies are inferred from the claim text.