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:
Aug. 09, 1988
Filed:
May. 20, 1987
Michael J Ortman, Maplewood, NJ (US);
Simmonds Precision, Tarrytown, NY (US);
Abstract
An actuator system for positioning a flight control surface on an aircraft in which a primary braking device provides a continuous braking action to the actuator screw shaft by means of a load bearing disc brake wheel and a pair of rachet wheels contiguous therewith, the torque between the disc brake wheel and the rachet wheel (which ever wheel is being racheted by the load bearing disc) is proportional to the load on the screw shaft (and hence the actuator for the flight control surface). A Hall-effect device is mounted above the pawls associated with the rachet wheels for measuring the movement of the pawls in a closed loop circuit for the purpose of determining not only a faultlessly running braking condition but also to indicate whether a faulty condition exists, as well as what kind of fault is being detected.