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US 2012/0230752 A1Published application
Retractable lamp pen
AssigneeBeifa Group Co., Ltd.
InventorLiang Liu
Life of this patent
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Abstract
A lamp pen includes a pen body, a refill, a conductive rotating slide, a lamp, and a cartridge holding a battery. The rotating slide is electrically connected to the battery. A conductive bar on a surface of the slide abuts an end of the cartridge, which comprises a helical surface forming higher and auxiliary higher slots disposed at a highest point of the surface. A first lead of the lamp is connected to the battery, and a second lead is affixed within the higher slot. Rotating the slide causes the conductive bar to engage either the higher slot or auxiliary higher slot, pushing the cartridge downward so that the refill extends out of the pen tip. When the higher slot is engaged, the second lead of the lamp connects to the conductive bar, the electric circuit completes, and the lamp illuminates.
Claims20
A writing instrument, comprising:
- a body configured to support a lamp and a writing element, wherein the lamp has a first lead and a second lead, wherein the first lead of the lamp is adapted to electrically connect to a battery, and wherein the writing element is adapted for writing on a surface;
- a cartridge slidably disposed in the body, wherein the cartridge has an upper end and a lower end, wherein the upper end of the cartridge has a lower locating slot, a higher locating slot, and an auxiliary higher locating slot defined therein, wherein an end surface of the cartridge slopes upward in a first direction from the lower locating slot to the higher locating slot, and wherein the end surface of the cartridge slopes upward in a second direction from the lower locating slot to the auxiliary higher locating slot;
- a rotating slide having a conductive bar that abuts the upper end of the cartridge, wherein the conductive bar is adapted to electrically connect to the battery;
- and
- an electrical connection adapted to electrically connect the second lead of the lamp to the battery through the conductive bar of the rotating slide when the conductive bar engages the higher locating slot,
- wherein, when the conductive bar engages the lower locating slot, the writing element is retracted inside the body,
- wherein rotation of the rotating slide in the first direction causes the conductive bar to slide on the sloped end surface of the cartridge until the conductive bar engages the higher locating slot, thereby pushing the cartridge downward in the body so that the writing element extends out of the body and the second lead of the lamp electrically connects to the conductive bar causing the lamp to illuminate, and
- wherein rotation of the rotating slide in the second direction causes the conductive bar to slide on the sloped end surface of the cartridge until the conductive bar engages the auxiliary higher locating slot, thereby pushing the cartridge downward in the body so that the writing element extends out of the body while the second lead of the lamp is not electrically connected to the conductive bar and the lamp is not illuminated.
5 more elements
A writing instrument, comprising:
- a body having a lower part, an upper part, and a guiding slot axially disposed in the upper part;
- a writing element adapted for writing on a surface;
- a conductive rotating slide having a conductive connector and a conductive bar;
- a cartridge having an upper end and a lower end, wherein the lower end of the cartridge has a mounting slot, and wherein the upper end of the cartridge has a sloped end surface with a lower locating slot, a higher locating slot, an auxiliary higher slot, and a stop defined therein, wherein the stop protrudes axially between the higher locating slot and the auxiliary higher locating slot, and wherein the cartridge is adapted to hold a battery such that the conductive connector of the rotating slide is adapted to electrically connect to the battery;
- and
- a lamp having a first lead and a second lead, wherein the first lead is adapted to electrically connect to the battery, and wherein the second lead is disposed in the mounting slot of the cartridge and is electrically connected to the higher locating slot,
- wherein, in a first position of the rotating slide, the conductive bar engages the lower locating slot and the writing element is retracted within the writing instrument,
- wherein rotation of the rotating slide from the first position in a first direction causes the conductive bar to slide on the sloped end surface of the cartridge and thereby push the cartridge downward in the body until the conductive bar engages the higher locating slot and the writing element extends out of the body, in which position the second lead of the lamp is electrically connected to the conductive bar causing the lamp to illuminate, and
- wherein rotation of the rotating slide from the first position in a second direction causes the conductive bar to slide on the sloped end surface of the cartridge and thereby push the cartridge downward in the body until the conductive bar engages the auxiliary higher locating slot and the writing element extends out of the body, in which position the second lead of the lamp is not electrically connected to the conductive bar and the lamp is not illuminated.
6 more elements
Dependencies are inferred from the claim text.