US 12,220,521 B2
Tensioning arrangement for aerosol dispenser and aerosol dispenser
Daniel Säll, Segeltorp (SE)
Assigned to SHL Medical AG, Zug (CH)
Appl. No. 17/275,119
Filed by SHL MEDICAL AG, Zug (CH)
PCT Filed Sep. 12, 2019, PCT No. PCT/EP2019/074313
§ 371(c)(1), (2) Date Mar. 10, 2021,
PCT Pub. No. WO2020/064341, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 18197289 (EP), filed on Sep. 27, 2018.
Prior Publication US 2022/0047820 A1, Feb. 17, 2022
Int. Cl. A61M 11/00 (2006.01); A61M 15/00 (2006.01); G01F 11/00 (2006.01); G01F 11/02 (2006.01)
CPC A61M 11/006 (2014.02) [A61M 15/0036 (2014.02); A61M 15/009 (2013.01); G01F 11/006 (2013.01); G01F 11/025 (2013.01); A61M 11/007 (2014.02)] 18 Claims
OG exemplary drawing
 
1. A tensioning arrangement for an aerosol dispenser, the tensioning arrangement comprising:
a conveying tube for conveying liquid from a container to a dose chamber;
an elastic member arranged to store mechanical energy from an axial tensioning movement of the conveying tube from an initial position to a tensioning position;
a rotatable member;
a transmission mechanism configured to transmit a tensioning rotation of the rotatable member to the tensioning movement of the conveying tube;
wherein the transmission mechanism comprises a cam profile and a cam follower arranged to follow the cam profile;
wherein the cam profile comprises at least one priming structure;
wherein each of the at least one priming structure is constituted by a protrusion; and
wherein the tensioning arrangement is configured such that the conveying tube makes a temporary priming movement towards the initial position when the cam follower passes each priming structure during the tensioning movement of the conveying tube by means of the tensioning rotation of the rotatable member.
 
14. A tensioning arrangement for an aerosol dispenser, the tensioning arrangement comprising:
a conveying tube for conveying liquid from a container to a dose chamber;
an elastic member arranged to store mechanical energy from an axial tensioning movement of the conveying tube from an initial position to a tensioning position;
a movable holding member that holds the conveying tube
a rotatable member;
a transmission mechanism configured to transmit a tensioning rotation of the rotatable member to the tensioning movement of the conveying tube;
wherein the transmission mechanism comprises a cam profile and a cam follower arranged to follow the cam profile;
wherein the cam profile comprises a plurality of priming structures; and
wherein the tensioning arrangement is configured such that the conveying tube makes a temporary priming movement towards the initial position when the cam follower passes each priming structure during the tensioning movement of the conveying tube by means of the tensioning rotation of the rotatable member.