MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202617086183 A) filed by Flender Gmbh on July 14, 2026, for Planetary Gearing Having A Sealed Pitch Tube.
Inventors include Lensing, Volker; Tshaus, Tino; Lenk, Swen; and Vennemann, Michael.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: The invention relates to a planetary gearing (10) for a wind turbine (70) driven by means of a rotor (72), comprising: a gearing housing (12) which surrounds an oil- accommodating space (28) for accommodating an oil volume; a plurality of planetary stages (141, 142) which revolve around an axis of rotation AD and which are connected to one another in terms of driving; a pitch tube (34) which is disposed coaxially inside the two planetary stages (141, 142) and which is rotationally rigidly connected to a planet carrier (161) of the first planetary stage (141), wherein the pitch tube (34) is sealed with respect to an exterior of the gearing housing (12) and a volume region (30) is formed between the pitch tube (34) and each of the planetary stages (141, 142). At least a portion (32) of the volume region (30) is sealed with respect to the oil-accommodating space (28). A complex, expensive and fault-prone oil discharge device is rendered unnecessary. In the sealed volume region (30), the pitch tube (34) no longer has any contact with the oil.
Disclaimer: Curated by HT Syndication.
