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. 15, 1981
Filed:
Jan. 10, 1980
George T Coors, Tipp City, OH (US);
Ledex, Inc., Vandalia, OH (US);
Abstract
Mechanical lever controllers, also known as joy-stick type actuators, include a body within which is mounted a rod or lever for pivotal movement. The position of the rod is transmitted by an intermediate coupling or follower member to a differential transformer of the linear voltage differential transducer type (LVDT). The transducer includes an input coil and a pair of oppositely-positioned, axially-aligned output coils, and an armature moves within an armature cavity to vary the inductive coupling between the primary coil and the secondary coils. In one embodiment, two such differential transformers are offset at 90.degree. from each other to provide signals on the 'X' and 'Y' axes. In another embodiment, single axis output is measured in an actuator having a stackable housing.