Abstract: A gas mass flow sensor for sensing the flow of a gas to an internal combustion engine including a main flow passage having an inlet and an outlet for directing a gas flow to the internal combustion engine with the inlet communicating with a source of the gas and an outlet communicating with the internal combustion engine. A secondary flow passage for isolating a portion of the gas flow from the main flow passage is provided with the secondary flow passage including an inlet surrounding the main flow passage and a flow sensing section. Positioned within the flow sensing section of the secondary flow passage is a gas mass flow sensor for sensing the mass flow of gas through the secondary passage which is indicative of the mass flow through the main flow passage.

Abstract: A gas/air mixer for injecting gas into the intake air stream of an internal cumbustion engine using a combination of radial holes and radial tubes located around the perimeter of an air flow passage. The gas/air mixer includes an intake air passage which has a combination of radial holes and radial tubes arranged so that the gas is injected into the air stream. The gas passage contains gas which is at a higher pressure than the intake air. The gas flows around an annulus which distributes the gas to all the radial holes and radial tubes. The size of the intake air passage, the number and size of the radial holes, and the number, size and length of the radial tubes can be varied in any combination to achieve adequate gas/air mixing for the particular engine application. This combination can even include a device that contains all radial holes or all radial tubes. The distance that the gas is injected into the air stream is small at the radial holes and larger at the radial tubes.

Abstract: An improved sealing boot for a spark plug assembly is provided which includes a sealing and venting feature capable of preventing pressurized contaminants from reaching the spark plug by effectively sealing the spark plug mounting bore while permitting pressurized gas accumulating in the plug well to be vented to the engine overhead. The sealing and venting feature includes at least one annular sealing rib formed on the outer surface of the boot. The radial length and width of the sealing rib, and the resiliency of the material forming the rib, are selected to cause the rib to deflected outwardly an optimal degree, when the assembly is positioned in the bore, and to engage the bore wall with a sealing force so as to permit the desired sealing and venting. The optimal deflection causes the creation of an additional sealing force due to the pressure of fluid against the deflected portion of the rib thereby ensuring sealing.

Abstract: The present invention relates to racquet frames.The racquet frame according to the invention comprises thin strips which are glued to one another; the length of at least one strip corresponds to a complete loop of the frame; the width of the strips corresponds to the thickness of the frame in the direction perpendicular to the plane of the frame, and the thickness of the strips corresponds to a fraction of the thickness of the frame in the plane of the frame. The cross-section of the frame preferably possesses at least one recess, and each strip contains high-performance fibres which are orientated longitudinally.

Abstract: In panels for use particularly in the aeronautics industry comprising a metal support foil to which is adhered a fiber-reinforced metal matrix layer, the fibers being of high mechanical strength and modulus, the invention provides the improvement of interposing a thin layer of a bonding metal or alloy between the support foil and the fiber-reinforced metal matrix layer.The bonding metal layer serves to improve the adhesion of the metal matrix to the support foil and enables the metal matrix layer to be produced under less severe conditions.