MUMBAI, India, Nov. 21 -- Intellectual Property India has published a patent application (202517099021 A) filed by Pfeiffer Vacuum, Annecy, France, on Oct. 14, for 'vacuum pump.'
Inventor(s) include Mandallaz, Eric; Olivier, Yann; and D'Harboulle, Philippe.
The application for the patent was published on Nov. 21, under issue no. 47/2025.
According to the abstract released by the Intellectual Property India: "Dry vacuum pump (1) having: - a discharge duct (14) fluidically connecting the lubricant housing (2) to the inter-seals volume (11), and - a pressure-gradient control device (15) comprising a non-return valve (18) arranged on the discharge duct (13) so as to allow the purge gas to pass from the lubricant housing (2) towards the inter-seals volume (11) when the variation in pressure between the upstream and downstream sides of the non-return valve (18) is above a predetermined opening threshold so that the pressure in the lubricant housing (2) is greater than the pressure in the inter-seals volume (11)."
The patent application was internationally filed on Mar. 08, 2024, under International application No.PCT/EP2024/056246.
Disclaimer: Curated by HT Syndication.
