US 12,403,661 B2
Method and system for monitoring amount of supply material in additive manufacturing
Mordechai Cohen Azaria, Petach Tikva (IL); Chen Turkenitz, Kfar Saba (IL); Omer Jacob, Tzur Hadassah (IL); and Eitan Pinhasi, Petach Tikva (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Appl. No. 17/624,596
Filed by Stratasys Ltd., Rehovot (IL)
PCT Filed Jul. 1, 2020, PCT No. PCT/IL2020/050734
§ 371(c)(1), (2) Date Jan. 4, 2022,
PCT Pub. No. WO2021/001827, PCT Pub. Date Jan. 7, 2021.
Claims priority of provisional application 62/870,700, filed on Jul. 4, 2019.
Prior Publication US 2022/0250330 A1, Aug. 11, 2022
Int. Cl. B29C 64/112 (2017.01); B29C 64/259 (2017.01); B29C 64/393 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/00 (2015.01); G01F 23/14 (2006.01)
CPC B29C 64/393 (2017.08) [B29C 64/112 (2017.08); B29C 64/259 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/00 (2014.12); G01F 23/14 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of monitoring an amount of building material in a cartridge supplying the building material to a dispensing head of an additive manufacturing system via a building material delivery conduit connecting the cartridge and the dispensing head, the method comprising:
reducing pressure in an anterior of the cartridge by a pump;
introducing gas into a volume containing the building material in said anterior of the cartridge, following said reducing of said pressure;
measuring pressure within the cartridge; and
when said pressure reaches a predetermined level, determining the amount of building material in the cartridge, based on a volume of gas introduced into the cartridge or on a proxy of said volume.