US 12,435,714 B2
Pump comprising cooling means
Eric Michalski, Lesigny sur Creuse (FR)
Assigned to F2M, Naintre (FR)
Appl. No. 18/249,510
Filed by F2M, Naintre (FR)
PCT Filed Oct. 8, 2021, PCT No. PCT/EP2021/077929
§ 371(c)(1), (2) Date Apr. 18, 2023,
PCT Pub. No. WO2022/084072, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 2010707 (FR), filed on Oct. 19, 2020; application No. 2010708 (FR), filed on Oct. 19, 2020; application No. 2010709 (FR), filed on Oct. 19, 2020; application No. 2010710 (FR), filed on Oct. 19, 2020; and application No. 2010711 (FR), filed on Oct. 19, 2020.
Prior Publication US 2023/0383742 A1, Nov. 30, 2023
Int. Cl. F04B 49/12 (2006.01); F04B 15/08 (2006.01); F04B 19/22 (2006.01); F04B 49/06 (2006.01); F04B 53/14 (2006.01)
CPC F04B 49/12 (2013.01) [F04B 15/08 (2013.01); F04B 19/22 (2013.01); F04B 49/065 (2013.01); F04B 53/143 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A pump comprising:
a pump body and a piston, wherein the piston comprises:
at least two disks stacked on one another, each disk having a top face and a bottom face opposite the top face;
a continuous annular seal housed between the at least two disks,
wherein each disk has, at a centre thereof, a hole opening onto the bottom face and wherein at least one of the disks has, at a centre thereof, a projection extending from the top face and engaging with the hole of the other of the disks such that the continuous annular seal is clamped between the disks, and wherein each hole has an internal thread and each projection has an external thread, the external thread of the projection engaging helicoidally with the internal thread of the hole of the other of the disks,
the piston being slidably mounted in the pump body such that the continuous annular seal is in contact with an inner wall of the pump body.