US 12,402,748 B2
Brewing device for a machine for preparing beverages, in particular coffee or tea
Michele De Nicolo, Concorezzo (IT); Alessandro Merati, Chignolo d'Isola (IT); and Massimo Pelletta, Viguzzolo (IT)
Assigned to CARIMALI S.P.A., Bergamo (IT)
Filed by CARIMALI S.P.A., Bergamo (IT)
Filed on Oct. 24, 2023, as Appl. No. 18/492,978.
Application 18/492,978 is a division of application No. 16/624,059, granted, now 11,896,154, previously published as PCT/IB2018/054768, filed on Jun. 27, 2018.
Claims priority of application No. 102017000071896 (IT), filed on Jun. 27, 2017.
Prior Publication US 2024/0049905 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A47J 31/36 (2006.01)
CPC A47J 31/3614 (2013.01) [A47J 31/3604 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A brewing device for a machine for preparing beverages, the brewing device comprising:
a brewing chamber having a longitudinal axis and an opening through which a material to be brewed may be loaded and discharged;
a frame having two lateral walls arranged on opposite sides of the brewing chamber, and two fulcrum pins coaxial to each other and projecting outwards from the lateral walls;
a closing body movable relative to the frame, away from and towards a sealed closing position in which the closing body sealingly closes the opening of the brewing chamber;
a piston slidably mounted in the brewing chamber in a position axially opposite the closing body; and
an actuating device to move the closing body and comprising a motor and a cam drive arranged between the motor and the closing body;
wherein the cam drive comprises a barrel cam mounted coaxial to the brewing chamber, between the brewing chamber and the two lateral walls of the frame, and two cam followers slidably engaged in respective specular slots, each of which is formed in a corresponding one of the two lateral walls and extends parallel to the longitudinal axis to transform, during operation, a rotation of the barrel cam about the longitudinal axis into a translational motion of the respective cam follower along the longitudinal axis.