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:
Jun. 12, 1984
Filed:
Dec. 09, 1981
John Hanks, Reno, NV (US);
OMAC, Inc., Reno, NV (US);
Abstract
Upper and lower sectional doors of rectangular configuration are mounted within an aircraft fuselage door frame and hinged for pivoting about horizontal axes at the upper and lower horizontal edges of respective door sections. A step is mounted to the interior of the lower door for pivoting along one horizontal edge about a horizontal axis between a first position with the step flush with the door interior and a second position projecting generally at right angles thereto. A plurality of laterally slidable latch pins fixed to the lower door section along vertical side edges are projectable into holes within the fuselage doorframe through a linkage system coupled to a shaft pivotably mounting the step to the door. The latch pins are projected to latching position when the step is folded flush to the door and retracted to unlatched position by manual movement of the step to its projected position prior to opening the lower door.