Abstract: A fuel system is disclosed. The fuel system has a first pump supplying fuel at a first pressure. The fuel system also has a fuel filter fluidly connected downstream of the first pump. The fuel system further has a second pump receiving fuel at a second pressure and fluidly connected downstream of the fuel filter. The fuel system additionally has a first passage fluidly connecting an outlet of the first pump to an inlet of the first pump. The fuel system also has a valve located within the first passage and configured to selectively allow fuel flow through the first passage. The fuel system further has a second passage fluidly connecting an inlet of the second pump to the valve, wherein the second pressure acts on the valve to affect fuel at the first pressure to flow to the inlet of the first pump via the first passage when the second pressure is greater than a predetermined pressure.

Abstract: A fuel system is disclosed. The fuel system has a first pump configured to provide fuel at a first pressure. The fuel system also has a control valve disposed downstream of the first pump, the control valve being configured to selectively direct the fuel at the first pressure to a treatment device and a regulator valve. The fuel system further has a fuel filter disposed downstream of the regulator valve. The fuel system also has a second pump disposed downstream of the fuel filter. The fuel system further has a relief valve disposed downstream of the fuel filter and upstream of the second pump, the relief valve being configured to maintain fuel upstream of the second pump at a second pressure that is different from the first pressure.

Abstract: An electro-magnetically operated valve which has a pole piece, an armature member mounted for movement relative to the pole piece, and an electro-magnetic device associated with the pole piece for effecting movement of the armature member between a first position spaced from the pole piece to a second position where the armature member contacts the pole piece, where at least a portion of the armature member and/or the pole piece has in or on a coating or layer of material having a higher mechanical hardness or a higher magnetic permeability than the material of the armature and/or pole piece.

Abstract: A packet voting server and associated method for performing voting services on multiple radio channels simultaneously and including capability to be dynamically assigned (trunked) to service any given radio channel, for example, on a packet by packet, call by call, or less frequent basis.

Abstract: A method for reducing stress at a junction of high pressure fluid flow passages in a body involves passage intersected by a secondary passage. The depression is formed to generally surround an outlet of the secondary passage but be spaced therefrom In one embodiment, the depression is circular, i.e. ring-shaped.