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:
Mar. 18, 1997
Filed:
May. 18, 1993
Yves R Berneuil, Paris, FR;
Christian W Bettremieux, Le Mee sur Seine, FR;
Daniel G Kettler, Chartrettes, FR;
Michel M Lechevalier, Mormant, FR;
Xavier J Pasquali, Le Mee sur Seine, FR;
Jean-Marie N Pincemin, Crosne, FR;
Abstract
An actuating system for a variable area exhaust nozzle is disclosed having inner and outer flaps pivotally connected to an airframe whose positions may be varied by a single set of control cylinders. The control cylinders have a case in which is slidably mounted a pair of pistons, each having piston rods extending from one side, which piston rods extend through one end of the cylinder case. The piston rods may be arranged coaxially to minimize the bulk of the actuating cylinder. One of the piston rods is connected to the inner flaps, while the other of the piston rods is connected to the outer flaps. By selectively supplying pressurized fluid to one or more combinations of a first fluid chamber defined between one of the pistons and an end of the case, a second fluid chamber defined between the two pistons, and a third fluid chamber defined between the other of the pistons and the other end of the case the two piston rods can be made to extend or retract so as to move the inner and outer flaps to desired positions.