1
Strzelewicz Anthony S: Remote engine tachometer. General Motors Corporation, Fitzpatrick Paul, May 14, 1974: US3811089 (138 worldwide citation)

A tachometer which does not require connection with the engine. A probe placed near the engine picks up electromagnetic radiation produced by the distributor points and coil in bursts timed with engine speed. A bandpass filter suppresses all frequencies except a narrow band which is amplified in a c ...


2
Emmerson Calvin W, Meginnis George B, Steinbarger Jay O: Cooled turbine blade and its manufacture. General Motors Corporation, Fitzpatrick Paul, May 14, 1974: US3810711 (47 worldwide citation)

A turbine blade includes a hollow strut covered with a porous laminated material to provide a cooled blade portion and includes a supporting strut portion terminating in one or two bases for attachment to a turbine wheel. It also includes a blade platform bicast to the strut at the junction of the b ...


3
Aspinwall Robert H: Cooled turbine blade. General Motors Corporation, Fitzpatrick Paul, April 23, 1974: US3806276 (39 worldwide citation)

A turbine blade is cooled internally by air discharged through perforations in a liner toward the interior of the blade wall. The liner is spaced from the blade wall by ribs on the wall extending spanwise of the blade. The ribs increase in height toward the blade tip so that spanwise-extending diver ...


4
Nickles Lawrence H: Variable vanes. General Motors Corporation, Fitzpatrick Paul, January 29, 1974: US3788763 (32 worldwide citation)

An annular cascade of variable setting vanes in a compressor includes an annular row of vanes extending inward from the case and mounted on shafts extending through the case, each vane having a disk engaging the case through a bushing. Additional bushings are provided between the shaft and the case ...


5
Meginnis George B: Angular discharge porous sheet. General Motors Corporation, Fitzpatrick Paul, February 4, 1975: US3864199 (31 worldwide citation)

A porous laminated sheet for use in hot environments is formed of two layers bonded together, each layer having pores distributed over its surface with the pores of the layers out of register with each other. Bosses distributed over the inner surface of the outer layer or outer surface of the inner ...


6
Verdouw Albert J: Air preheating combustion apparatus. General Motors Corporation, Fitzpatrick Paul, December 9, 1975: US3925002 (30 worldwide citation)

A low emission combustion apparatus for a gas turbine engine employs vaporization of liquid hydrocarbon fuel to produce a mixture of vaporized fuel and primary or combustion air for a main combustion apparatus. The primary air is brought to a high enough temperature for vaporization of fuel by an ai ...


7
Irwin John A: Combustor with ceramic liner. General Motors Corporation, Fitzpatrick Paul, October 14, 1975: US3911672 (28 worldwide citation)

A combustor for a gas turbine engine embodies a ceramic liner the upstream or dome end of which has a central opening. The liner is supported from the combustion chamber housing by an annular structure defining an abutment which engages the inner surface of the dome adjacent the opening and by a rin ...


8
Anderson Robert D, Troth Dennis L: Combustion apparatus. General Motors Corporation, Fitzpatrick Paul, January 14, 1975: US3859787 (28 worldwide citation)

A combustion apparatus for gas turbine engines particularly adapted to reduce emissions to meet automotive requirements. The fuel is laid on the wall of a cylindrical prechamber and evaporated from the wall by combustion air which is introduced through a swirler at the upstream end of the prechamber ...


9
Duzan James R: Variable diffuser. General Motors Corporation, Fitzpatrick Paul, March 26, 1974: US3799694 (26 worldwide citation)

A variable diffuser for a centrifugal compressor has a set of fixed vanes remote from the compressor rotor and a set of movable vanes nearer the rotor. There is one movable vane for each two fixed vanes, and the movable vanes are swingable about axes adjacent their leading edges between a position i ...


10
Knape Richard S: Solenoid valve. General Motors Corporation, Fitzpatrick Paul, January 21, 1975: US3861644 (26 worldwide citation)

A solenoid-operated valve intended primarily to exert a force closely proportional to energizing current and particularly adapted for use in fluid pressure and flow controlling systems. The device includes an annular housing of magnetic material enclosing a nonmagnetic bobbin on which a coil is woun ...