Abstract: The invention pertains to a theftproofing system for motor vehicles with a locking member which can be engaged in a recess of a closing ring arranged concentrically to a steering shaft (9) and firmly connected to it and, when the locking member is engaged, blocks the steering shaft until a limiting torque is introduced into it.According to the invention, it is proposed that, in the frictional connection between the steering wheel (steering wheel spoke 5) and steering shaft, a slip clutch (3, 4, 8) be provided whose transmittable torque is lower than the limiting torque.

Abstract: An intermediate shaft assembly including a first shaft element coupled to a center shaft element for rotation therewith and longitudinal bodily shiftable movement relative thereto, an elastomeric ring around the center shaft element, a second shaft element having a midsection around the center shaft element, attaching lugs on the center and the second shaft elements each connected to the elastomeric ring whereby a torque path is defined between the first and the second shaft elements through the elastomeric ring, and an elastomeric bushing between the center shaft element and the midsection of the second shaft element for reinforcing the intermediate shaft assembly against beam bending.

Abstract: A cooled wall structure including a hot side, a cold side, a linear slot opening through the hot side, a plurality of diffusion chambers below the hot side separated therefrom by relatively thin bridge sections of the wall structure and arrayed in checkerboard fashion on opposite sides of the linear slot and opening into the linear slot through the sidewalls thereof, and a plurality of passages from the cold side to each of the diffusion chambers. The cold side is exposed to coolant gas under pressure and the passages are aimed at the bridge sections so that jet of cooling gas issuing from the passages impinge against the bridge section for convection cooling the hot side. The bridge sections prevent direct penetration of the coolant gas jets into the environment adjacent the hot side. The coolant gas flows from the diffusion chambers into the linear slots and from the linear slots over the hot side to form on the latter a coolant film or blanket.

Abstract: An automotive fuel system including a reservoir having upper and lower chambers on opposite sides of a partition in the reservoir, a high pressure fuel pump having an inlet connected to the lower chamber, a low pressure fuel overage return pipe returning overage fuel directly to the lower chamber, and a jet pump transferring fuel from the tank directly to the upper chamber. A drain in the partition conducts gravity induced fuel flow from the upper chamber to the lower chamber at a rate equal to the difference between the rate at which the high pressure pump withdraws fuel from the lower chamber and the rate at which overage is returned to the lower chamber through the overage return pipe.

Abstract: An automotive steering column having slip rings rotatable with a steering shaft and contact brushes on a housing of the steering column for transferring electrical signals between the steering column and a steering wheel rotatable with the steering shaft. The steering shaft is supported on the housing by a pair of longitudinally spaced bearings including an outboard bearing having an inner race on an adapter sleeve rotatable as a unit with the steering shaft. The slip ring is on the adapter sleeve between the spaced bearings and the adapter sleeve defines an annular spacer between the inner race of the outboard bearing and the steering shaft. A passage is defined in the portion of the adapter sleeve defining the annular spacer and a conductor connected to the slip ring traverses the plane of the outboard bearing in the passage.

Abstract: A steering column including a steering wheel mounted on a tilt-housing of the steering column for up and down pivotal movement about a first transverse axis and a shroud or bezel on the tilt-housing. The shroud has a viewing port therein and a drum is supported on the tilt-housing behind the shroud for rotation about a second transverse axis parallel to the first transverse axis. An outer cylindrical wall of the drum having graphic symbols thereon is partially visible through the viewing port so that the symbols scroll across the viewing port as the drum rotates about the second transverse axis. A connecting rod has a first end pivotally connected to a stationary part of the steering column and a second end pivotally connected to a side of the drum eccentric relative to the second transverse axis so that the drum rotates about the second transverse axis concurrently with up and down pivotal movement of the tilt-housing.

Abstract: A method of applying a thermal barrier coat on an exposed side of a porous metal laminate which method includes the steps of spreading on the laminate an air-curable maskant to force maskant into the perforations in the exposed side, removing excess maskant from the exposed side so that maskant plugs remain in the perforations with tops generally coplanar with the exposed side, allowing the maskant to cure, directing sprays of bond coat and top coat incompatible with the maskant at the exposed side of the porous laminate to deposit a thermal barrier coat thereon but not on the maskant plugs, and removing the maskant plugs by thermal and chemical treatment or by chemical treatment alone.

Abstract: In a fuel delivery apparatus including a canister in an automobile fuel tank, an electric fuel pump in the canister having two rotating elements from which three stages of pump operation are derived. A housing of the fuel pump has two cavities in which the two rotating elements are disposed. A first element has a web which divides the corresponding cavity into first and second stage pump chambers. The second element in the second cavity cooperates therewith in defining a third stage pump chamber. When the motor is on, vane pockets on one side of the web in the first pump chamber pump fuel from the fuel tank into the canister. Vane pockets on the other side of the web in the second pump chamber pump fuel from the canister to the third stage pump chamber. The second pump element pumps fuel into the interior of the fuel pump at a high pressure compatible with the requirements of internal combustion engine fuel injection systems. Vapor is separated from the fuel in the second stage pump chamber.

Abstract: A longitudinally collapsible shaft assembly particularly for application as a steering shaft in energy absorbing steering columns. The shaft assembly includes a first shaft element having a tube end, a second shaft element having a bar end in the tube end, and a coupling which connects the bar and tube ends for unitary rotation without restraining the shaft elements longitudinally relative to each other. The coupling includes diametrically opposite longitudinal slots in the tube end and two longitudinally spaced pairs of diametrically opposite rollers on the bar end which roll along the side edges of the slots to minimize friction during longitudinal collapse. for transferring torque between the tube and bar ends in one direction, one pair of diametrically opposite rollers engages one pair of diagonally opposite side edges of the longitudinal slots.

Abstract: An automotive fuel system including a reservoir having upper and lower chambers on opposite sides of a partition in the reservoir, a high pressure fuel pump having an inlet connected to the lower chamber, a low pressure fuel overage return pipe returning overage fuel directly to the lower chamber, and a low pressure pump transferring fuel from the tank directly to the upper chamber. A drain in the partition conducts gravity induced fuel flow from the upper chamber to the lower chamber at a rate equal to the difference between the rate at which the high pressure pump withdraws fuel from the lower chamber and the rate at which overage is returned to the lower chamber through the overage return pipe.

Abstract: In a gas turbine engine, an annular flange of a ceramic scroll is clamped to an annular shoulder of a gas turbine engine housing by a plurality of nuts on thread rods extending perpendicular to the annular shoulder. A metal sleeve around each rod cooperates therewith in defining a coolant passage which is connected at one end to a source of compressed air and which discharges at the other end into a cooling chamber around the nuts through grooves in a surface of each nut. Air circulating in the coolant passages and through the cooling chamber cools and thermally shields the rods and the nuts.

Abstract: An integral pulse attenuator on a high pressure axial piston hydraulic pump includes a frustoconical cavity in boss on a valve block of the pump, a cover over the cavity, a complementary frustoconically shaped flexible bladder in the cavity dividing the latter into variable volume fluid and gas chambers on opposite sides of the bladder, and a plurality of attenuator passages through a web of the valve block from a discharge port of the pump to the fluid pressure chamber in the cavity. When the pump is on, pressure pulses migrate from the discharge port to the fluid pressure chamber and are damped by oscillations of the bladder. When the pump is off, the cavity reinforces the bladder against gas pressure of about 1500 psi in the gas chamber to prevent distortion of the bladder.

Abstract: A modular fuel delivery system including a reservoir in fuel tank, an electric high pressure pump in the reservoir fed only from inside the reservoir, and a jet pump fed only from the fuel tank and discharging into the reservoir to keep the latter filled and energized from the high pressure pump. A check valve is disposed between the jet pump inlet and the fuel tank to prevent backflow into the fuel tank. A partition on the bottom of the reservoir separates the jet pump discharge from the high pressure pump inlet and defines a standpipe around and above the jet pump discharge so that the jet pump stays submerged in fuel when the high pressure pump empties the reservoir. The pumping efficiency of the jet pump when submerged is better than when dry so that the delay in restarting the engine after the both the fuel tank and the resvoir are pumped empty is minimized.

Abstract: A turbine blade shroud assembly for a gas turbine engine includes a metal substrate ring on the engine, a continous ceramic barrier ring inside the substrate ring and exposed to hot gas in a hot gas flow path of the engine, and a wire mesh compliant ring between the barrier and substrate rings. The temperature of the barrier ring increases faster than the temperature of the substrate ring as the temperature in the hot gas flow path increases. The coefficient of thermal expansion of the substrate ring is less than the coefficient of thermal expansion of the barrier ring so that the barrier ring expands relative to the substrate ring with increasing temperature in the hot gas flow path and development of tensile hoop stress in the ceramic barrier ring is minimized.

Abstract: A squeeze film damper for the high temperature environments includes a fixed journal on a support, a floating journal on a rotating shaft, a damping ring in an annular chamber between the fixed and floating journals, and a pair of metal bellows straddling annular exposed channels defined at a pair of clearance gaps between the fixed and floating journals. The metal bellows are welded to the fixed and floating journals on opposite sides of the exposed channels and filled with high temperature resistant viscous fluid. The damping fluid flows to the damping chamber through the annular channels and the clearance gap between the fixed and floating journals.

Abstract: A turbine support for reacting structural loads from a rotor bearing cage to a case of a gas turbine engine. The turbine support includes a homogeneous main casting and a rotor bearing cage. The main casting has concentrically arranged inner, intermediate and outer walls. The bearing cage is radially inboard and a rigid appendage of the inner wall. The inner and intermediate walls define therebetween a longitudinal segment of the annular hot gas flow path of the engine. The outer wall is bolted to the engine case. The inner wall is connected to the intermediate wall by a plurality of generally radially oriented, angularly separated inner load bearing struts of the main casting. The outer wall is connected to the intermediate wall by a plurality of radially oriented, angularly separated outer load bearing struts of the main casting.

Abstract: A variable effort automotive power steering gear including an input or stub shaft, an output shaft or pinion head, a torsion bar between the stub shaft and pinion head defining an open-center position of one relative to the other, and detent reaction apparatus between the stub shaft and pinion head. The detent reaction apparatus includes a radial socket in a cylindrical wall of the pinion head, a detent groove in a stem of the stub shaft in the cylindrical wall, an insert rotatably supported in the radial socket with an eccentric bore offset from the centerline of the radial socket, and a detent element slidably supported in the eccentric bore in the insert and having a spherical end adapted to seat in the detent groove. The spherical end of the detent element is centered in the detent groove by rotating the insert until the detent element is at an innermost radial position.

Abstract: A modular fuel delivery system including a reservoir in a fuel tank, an electric fuel pump in the reservoir, and a jet pump for pumping fuel from the fuel tank into the reservoir wherein overflow from the reservoir is recirculated by the jet pump back into the reservoir to minimize mixing of potentially hot overflow with cooler bulk fuel in the fuel tank. A recirculation fluid flow path extends from the reservoir to a secondary inlet of the jet pump adjacent a small diameter end of a venturi passage in the latter. A valve closes the recirculation flow path when the reservoir is not overflowing and opens the recirculation flow path when the reservoir is overflowing. A portion of the recirculation flow path is above the maximum surface elevation of fuel in the fuel tank so that the pressure head at the recirculation inlet exceeds the pressure head at the main inlet of the jet pump open to the fuel tank.

Abstract: A variable effort power steering gear including detent elements in radial sockets in a pinion head, detent grooves in a stem of a stub shaft, an annular low speed reaction piston on the pinion head engageable on the detent elements when the low speed piston moves in a first direction, and an annular high speed reaction piston on the pinion head engageable on the detent elements when the high speed piston moves in a second direction opposite the first direction. Low and high speed bias springs apply first and second bias forces against the low and high speed reaction pistons. A control effects a fluid pressure gradient across the high speed piston in a low speed range of the steering gear counter to the second bias force so that in the low speed range only the first bias force is operative to urge the detent elements into the detent grooves and in the high speed range both the first and the second bias forces are operative to urge the detent elements into the detent grooves.

Abstract: A variable effort automotive power steering gear including an input or stub shaft, an output shaft or pinion head, a torsion bar between the stub shaft and pinion head defining an open-center position of one relative to the other, and detent reaction apparatus between the stub shaft and pinion head. The detent reaction apparatus includes a radial socket in a cylindrical wall of the pinion head, a detent groove in a stem of the stub shaft in the cylindrical wall, an insert rotatably supported in the radial socket with an eccentric bore offset from the centerline of the radial socket, and a detent element slidably supported in the eccentric bore in the insert and having a spherical end adapted to seat in the detent groove. The spherical end of the detent element is centered in the detent groove by rotating the insert until the detent element is at an innermost radial position.