US 11,940,301 B2
Position indicator
Masamitsu Ito, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Mar. 1, 2023, as Appl. No. 18/176,990.
Application 18/176,990 is a continuation of application No. PCT/JP2021/029710, filed on Aug. 12, 2021.
Claims priority of application No. 2020-148971 (JP), filed on Sep. 4, 2020.
Prior Publication US 2023/0204391 A1, Jun. 29, 2023
Int. Cl. G01D 5/20 (2006.01); G01L 1/14 (2006.01); G06F 3/0354 (2013.01)
CPC G01D 5/2066 (2013.01) [G01L 1/144 (2013.01); G06F 3/03545 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A position indicator of an electromagnetic induction type comprising:
a position indicator cartridge housed in a hollow portion of a first housing, wherein the position indicator cartridge includes a first resonant circuit including a first coil wound around a magnetic core arranged on one end of the position indicator cartridge in an axial direction of the position indicator cartridge and a first capacitor,
a second coil that is independent of the position indicator cartridge provided outside of the position indicator cartridge, at a position where the second coil, in operation, is magnetically coupled to the first coil of the position indicator cartridge, and
a switch turned on and off by an operation portion provided outside of the position indicator cartridge, wherein the operation portion, in operation, receives an operation made by a user, and wherein a closed circuit including the second coil is formed when the switch is turned on.