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:
Jan. 16, 1996
Filed:
Apr. 28, 1993
David C Quick, Rockford, IL (US);
David E Russ, Rockford, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
In order to prevent serious damage to a flight control system in a failure mode, a failure protection unit includes an input shaft connected to a shaft of the flight control system with the input shaft normally being operably associated with a plunger having a brake hub integral therewith for rotational driven movement of the plunger and the brake hub through the input shaft. The plunger and the brake hub are movable relative to the input shaft, and a brake reaction plate is positioned within a housing in normally spaced relation to the brake hub. The brake hub is biased by a spring in a direction toward the brake reaction plate and the plunger is biased by the spring in a direction away from the input shaft. The plunger is normally locked against movement by a detent which resists movement of the plunger away from the input shaft and movement of the brake hub toward the brake reaction plate. With these features of construction, a trip mechanism initiates engagement of the brake hub with the brake reaction plate responsive to an overspeed condition for the shaft of the flight control system by disabling the detent to thereby allow the spring to cause movement of the brake hub toward the brake reaction plate and movement of the plunger away from the input shaft.