Abstract: A pneumatically actuated disc brake, includes a caliper, at least one brake application-side and one reaction-side brake lining, a brake disc, and a brake cylinder to which compressed air can be applied as a braking force generator. The brake cylinder acts on a brake application device for applying the brake lining, the brake application device having a rotary lever. At least the brake application-side brake lining can be moved both in a direction parallel to the brake disc rotation axis and parallel to the brake disc frictional surface, and a self-energizing device is provided which has a self-energizing factor that is selected such that the brake releases automatically after braking.

Abstract: Apparatus and method for eliminating an interference signal from a desired signal where a difference of polarization exists or can be made to exist. The desired signal is received on a first antenna of appropriate polarization and the interference signal is received via another port of the same antenna or a second antenna polarized ninety degrees away from the first. The signal received via the other polarization is adjusted for amplitude and phase so that all interference will be cancelled when both signals are subtracted in a summing junction. In the case where the interference and desired signals do not have polarization differences, provision is made to change the polarization of the desired signal.

Abstract: This is an automatic direction finder comprising a separately located first and second sensor means for receiving a first and second representation signal from a remote electromagnetic signal source, an error correction loop means connected to the first and second sensor means for nulling the second representation signal in the second sensor means, and an indicator means responsive to the error correction loop means for computing and displaying an off-boresight direction of the electromagnetic signal when the second representation signal is substantially nulled at the second sensor means.

Abstract: The present invention is a method and apparatus for separating a plurality of radio frequency signals, comprising N number of signal collectors, each signal collector receiving the plurality of signals from a location different than the other signal collectors, and N being an integer from 2 to infinity; N number of transmission means, each transmission means conducting the signals received from one signal collector; and, N (N-1) number of signal cancellation means, each signal cancellation means having reference, error input and output lines, the reference line coupled to one transmission means and the error and output lines coupled to another transmission means; the signal cancellation means and transmission means being interconnected so that each transmission means is coupled to the output and error lines of N-1 signal cancellation means and the reference line of N-1 other signal cancellation means, and no signal cancellation means having the same transmission means coupled to their output and reference lin

Abstract: Disclosed is a solid state signal controller designed to be inserted in a radio frequency transmission line or path between a source and a signal utilization device to allow the control by external means of signal amplitude ratio and polarity, with a minimum of distortion of the signal. This invention has a dynamic range of more than 100 db and is capable of greater power handling capacity than the prior art signal controllers. It employs a plurality of semiconductor diodes, commonly known as PIN diodes, each cooperating with an energy coupler and having their respective impedances controlled to effect a reflection of energy with either positive or negative polarity toward an output terminal.In one embodiment employing a single channel, a pair of control elements are employed. In the second embodiment, four impedance elements are employed to produce a pair of quadrature signals, each independently controllable in amplitude and polarity.

Abstract: Apparatus and method for eliminating an interference signal from a desired signal where a difference of polarization exists or can be made to exist. The desired signal is received on a first antenna of appropriate polarization and the interference signal is received via another port of the same antenna or a second antenna polarized ninety degrees away from the first. The signal received via the other polarization is adjusted for amplitude and phase so that all interference will be cancelled when both signals are subtracted in a summing junction. In the case where the interference and desired signals do not have polarization differences, provision is made to change the polarization of the desired signal.