US 12,447,684 B2
Pressure gauge plunger for platforms for extrusion-based 3D printing of semisolid masses
José Bruno Celso Fariña Espinosa, Santa Cruz de Tenerife (ES); Ana Maria Santoveña Estévez, Santa Cruz de Tenerife (ES); and Eduardo Diaz Torres, Las Palmas de Gran Canaria (ES)
Assigned to Universidad de La Laguna, La Laguna (ES)
Appl. No. 18/267,016
Filed by Universidad de La Laguna, La Laguna (ES)
PCT Filed Dec. 16, 2021, PCT No. PCT/ES2021/070900
§ 371(c)(1), (2) Date Jun. 13, 2023,
PCT Pub. No. WO2022/136710, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. ES202031276 (ES), filed on Dec. 21, 2020.
Prior Publication US 2025/0083390 A1, Mar. 13, 2025
Int. Cl. B29C 64/386 (2017.01); B29C 64/343 (2017.01); B33Y 50/00 (2015.01)
CPC B29C 64/386 (2017.08) [B29C 64/343 (2017.08); B33Y 50/00 (2014.12)] 4 Claims
OG exemplary drawing
 
1. A pressure-gauge plunger for 3D printers for extrusion of semi-solid material characterized by a movable cylinder, a central cylinder, a fastening system between the movable cylinder and the central cylinder wherein a fastening screw extends through the central cylinder and into an elongated hole in the movable cylinder such that the movable cylinder can slide with respect to the central cylinder; a pressure sensor, and a bottom end fastened to a receptacle that contains the material to extrude.