US 12,296,444 B2
Vacuum arrangement for a tightening tool
Carl Johan Erik Wallgren, Stockholm (SE)
Assigned to ATLAS COPCO INDUSTRIAL TECHNIQUE AB, Stockholm (SE)
Appl. No. 17/620,652
Filed by ATLAS COPCO INDUSTRIAL TECHNIQUE AB, Stockholm (SE)
PCT Filed Jun. 23, 2020, PCT No. PCT/EP2020/067499
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2020/260282, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 1930233-0 (SE), filed on Jun. 28, 2019.
Prior Publication US 2022/0241941 A1, Aug. 4, 2022
Int. Cl. B25B 23/08 (2006.01); B25B 21/00 (2006.01); B23P 19/06 (2006.01)
CPC B25B 23/08 (2013.01) [B25B 21/00 (2013.01); B23P 19/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A power screw driver comprising a housing enclosing a motor and a bit drive spindle, where the bit drive spindle is located at a front end of the housing and configured for driving a bit,
wherein the front end of the housing is configured for connection to a vacuum adapter having screw pick-up functionality configured for facilitating engagement of a screw with the driving bit,
wherein the power screw driver further comprises a vacuum channel located in the housing and comprising a first end arranged to connect to a source of sub-atmospheric pressure and a second end connected to an opening in the front end of the housing to thereby provide sub-atmospheric pressure to the vacuum adapter when the vacuum adapter is connected to the housing,
wherein the power screw driver further comprises a vacuum sensor located in the housing,
wherein the power screw driver further comprises a vacuum sensor channel located in the housing, where the vacuum sensor channel comprises a first end that is in communication with the vacuum sensor and a second end connected to an opening in the front end of the housing, wherein the second end of the vacuum sensor channel is configured for communication with the vacuum adapter when the vacuum adapter is connected to the housing, and
wherein the vacuum sensor is arranged to sense a sub-atmospheric pressure in the vacuum adapter via the vacuum sensor channel.