The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2016
Filed:
Feb. 18, 2015
The Boeing Company, Chicago, IL (US);
Farid Piroozmandi, Kirkland, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
There is provided an aircraft tipping alarm system having a nose landing gear (NLG) shock strut containing hydraulic fluid and having an aperture. The system further has an elongated pressure chamber assembly configured to engage to the aperture. The elongated pressure chamber assembly has an elongated pressure chamber containing hydraulic fluid and having a pressure sensor device, a first check valve configured to restrict hydraulic fluid flow only into the NLG shock strut, a second check valve configured to restrict hydraulic fluid flow only into the elongated pressure chamber, and a reduced diameter breakable neck section. A potential aircraft tipping back position is indicated when a reduction of pressure of the hydraulic fluid in the NLG shock strut, sensed via the pressure sensor device, is greater than or equal to a pressure reduction threshold.