Connection between a pitch control unit arm and a pitch horn
US12157563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2021 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Apr 23, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2326/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A detachable connection between a pitch control unit arm and a pitch horn of a blade holder in a tail rotor head of a tail rotor of a rotary wing aircraft includes a pin connecting the pitch horn, attached to a blade holder, with the pitch control unit arm of a pitch control unit, by protruding through an arm through hole and at another edge through a pitch horn through hole. By this arrangement, material wear is reduced and maintenance intervals can be reduced. This is reached because the pin is designed as a sliding pin projecting between pitch horn and pitch control unit arm, which is running in the course of its length through a spherical bearing in form of a ball with a central ball through hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.