US 12,140,131 B2
Flange for a vacuum apparatus
Douglas Mark Brown, Shakopee, MN (US); and Marcus Hans Robert Thierley, Shakopee, MN (US)
Assigned to Edward Vacuum LLC, Sanborn, NY (US)
Appl. No. 17/904,906
Filed by Edwards Vacuum LLC, Sanborn, NY (US)
PCT Filed Feb. 18, 2021, PCT No. PCT/IB2021/051377
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/171148, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2002627 (GB), filed on Feb. 25, 2020.
Prior Publication US 2023/0113996 A1, Apr. 13, 2023
Int. Cl. F04B 39/12 (2006.01); F04B 37/14 (2006.01)
CPC F04B 39/123 (2013.01) [F04B 37/14 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A vacuum apparatus comprising:
a vacuum pump housing;
a flange comprising:
a first end configured to connect to a vessel;
a second end connected to the vacuum pump housing; and
an opening extending between the first end and the second end and having a width and a height at the second end wherein the ratio of the width to the height is larger than 4;
a NEG element in the vacuum pump housing;
an IGP element in the vacuum pump housing;
characterized in that both the NEG element and the IGP element are positioned along the width of the opening, further wherein both the NEG element and the IGP element are directly attached to the flange such that no additional elements are placed between the NEG element and the vessel or between the IGP element and the vessel.