Several embodiments of coupling arrangements for resiliently coupling a propeller to a driving shaft. In each embodiment, a first resilient means provides a resilient coupling for absorbing circumferential vibrations and a second resilient means for absorbing axial vibrations. In one embodiment of the invention, one of the resilient means comprises a coil spring. In the other embodiment, all of th...

A flight control system for initiating, and thereafter controlling, the automatic capture of a preselected altitude. At any point in the flight and in any autopilot pitch submode, the remaining time before an altitude capture is to commence is computed and used as a limiting signal such that the aircraft is precisely aligned with the commanded capture flight path when the capture manoeuvre commenc...

A digital display measuring apparatus including a movable contact on the body of the measuring apparatus to engage with an object to be measured, an encoder for converting the displacement of the contact into an electrical output signal, a counting circuit for counting the output signal of the encoder, and a digital display for indicating the counted value from the counting circuit. The digital di...

Process for the catalytic hydrodesulphurization of a hydrocarbon oil fraction by contacting it in the presence of hydrogen with a catalyst which contains platinum whiskers. Method and apparatus for the determination of the sulphur content of a hydrocarbon oil fraction by hydrodesulphurization with a catalyst which contains platinum whiskers, and measuring the amount of hydrogen sulphide formed.

A multilayer analytical element for quantitative analysis of bilirubin in a liquid sample by a diazo method, which comprises a laminated structure consisting essentially of: (1) a porous reagent layer containing an acidic binder and a diazonium salt being reactive to bilirubin to produce azobilirubin; (2) an absorbent layer capable of absorbing an excessive liquid portion; and (3) a liquid-imperme...

The present invention provides a system for applying a fixed level D.C. voltage and a square wave signal sequentially to a voltage divider including a resistor of a known impedance and the device under test. The square wave ranges from a value which is substantially equal to the ground level to a level that is substantially twice the nominal value of the fixed D.C. level, thus the average value of...

PCT No. PCT/JP84/00111 Sec. 371 Date Nov. 2, 1984 Sec. 102(e) Date Nov. 2, 1984 PCT Filed Mar. 16, 1984 PCT Pub. No. WO84/03775 PCT Pub. Date Sep. 27, 1984.Pulse sounds from a measuring device (1) for measuring a radioactive concentration or the like are counted by a preset counter (2). When a count of the preset counter (2) exceeds a predetermined value, the automatic dial device (5-1, 5-2, 5-3) ...