I'm not sure about this because it's not really my field but I have found 'air de maintien' mentioned here:

http://www.cab.de/media/files/dokumente/cata00001451.pdf

the equivalent can be found here:
http://www.cab.de/en/marking/print-apply/hermesplus/#dokumen...



by downloading the brochure and it says this:

The supporting air jet streaming and the
vacuum as well as the cylinder speed
are adjustable and monitored via sensors.


There is further mention of this here:

Patent US4295500 - Method of and a device for forming an ... - Googlewww.google.com/patents/US4295500 - Traduire cette page
In the method of operating an air jet loom having a guide comb, a reed, and means for forming a weft inserting supporting air stream which supplements a main ...


Air Jet Sieving Machine - Labopoliswww.labopolis.com/English/lab.../Air-Jet-Machine‎En cacheTraduire cette page
The product to be analyzed is moved by a stream of pressurized air that enters ... Support air jet test sieves of Ø200mm, available from 5μm and 1000μm, ...

Parker Balston - Supportwww.labgasgenerators.com/support‎En cache
Pages similairesTraduire cette page
... optical or camera path purge, Jet Stream, LC/MS, Make-up gas requirements ... FPD, and NPD detectors, Provide Carrier, Fuel Gas, and Support Air for 1-3 ...