US 12,280,814 B2
Lifter device
Syuji Aoyama, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/898,141.
Claims priority of application No. 2021-144201 (JP), filed on Sep. 3, 2021; and application No. 2022-112681 (JP), filed on Jul. 13, 2022.
Prior Publication US 2023/0076978 A1, Mar. 9, 2023
Int. Cl. B66F 9/00 (2006.01); B62B 3/06 (2006.01); B62B 5/00 (2006.01); B66F 9/24 (2006.01)
CPC B62B 3/0612 (2013.01) [B62B 3/0637 (2013.01); B62B 5/00 (2013.01); B62B 5/0013 (2013.01); B66F 9/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A lifter device comprising:
a pole;
a lifting member configured to be guided by the pole;
a motor configured to generate power used for ascending and descending of the lifting member and coupled to the pole;
a controller configured to control the motor and coupled to the pole;
a gear mechanism configured to transmit the power of the motor to the lifting member; and
a battery mounting portion that is coupled to the pole and on which a battery pack is mounted to supply power to the motor, wherein
the lifter device further comprises either (i) an upper limit sensor configured to sense reaching of the lifting member to an upper height limit in order to prevent the lifting member from ascending past the upper height limit, or (ii) a lower limit sensor configured to sense reaching of the lifting member to a lower height limit in order to prevent the lifting member from descending past the lower height limit.