Retractable lamp pen
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 22, 2012
Grant Date -
Apr 22, 2010
app pub date -
Oct 20, 2009
filing date -
Oct 22, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Other Claims data not available
