Abstract: An instrument mounting bracket for the control yoke of an aircraft. The mounting bracket includes a main body having a C-shaped configuration which is intended to receive the yoke. Mounted to the main body is a presser plate which acts in conjunction with the main body to grip the yoke therebetween. The main body also includes a pair of threaded attachment holes, with one hole being normal to the plane of the C-shape and the other being within such plane. Either hole may receive a threaded shaft having an enlarged section. An extension arm which includes a mount for the instrument is provided with a through hole for the threaded shaft. Passing the shaft through the extension arm and tightening it within one of the attachment holes secures the extension arm to the main body, and permits angular adjustment of the arm with respect to the body. The extension arm may thus be positioned such that the instrument mount is located in front of the yoke handles, readily accessible to the user.

Abstract: A dual function button for keyboards and keypads. The button includes a first contact switch which is activated by a first manual pressure. The first contact switch is preferably formed by a resilient cover having a conductive pellet on its interior face, and a flexible substrate having spaced contacts below the pellet. The first manual pressure causes the pellet to impinge upon the spaced contacts, completing a first circuit. The button also includes a second contact switch which is activated by a second, greater, manual pressure. The second contact switch includes the resilient cover of the first switch, a rigid substrate mounting spaced contacts, and a flexible conductive dome mounted on the rigid substrate below the resilient cover. The second manual pressure will cause the dome to resiliently deform and impinge upon the contacts, closing a second circuit. In this manner two functions may be provided by a single switch. The two functions may advantageously be a dual-speed cursor control.

Abstract: A precision phase shift system presents advantageous utility in navigation systems using signals from global positioning satellites. In particular, the system hereof provides precise control over successive phase-shifting steps of output signals which allows precise matching with corresponding object signals for subsequent decoding thereof.