John W Riddel

US Patent:

42179696, Aug 19, 1980

Filed:

Dec 15, 1978

Appl. No.:

5/969699

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 3100

US Classification:

180175

Abstract:

A vehicle road speed control system is provided with a position feedback valve sensing position of the system servomotor power wall to modify the vacuum signal acting on the servomotor. One embodiment uses such a valve to control atmospheric air bleed, and another embodiment uses such a valve to control the vacuum supply.

US Patent:

41747275, Nov 20, 1979

Filed:

Sep 8, 1978

Appl. No.:

5/940639

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02M 3700

US Classification:

137111

Abstract:

A vacuum and atmospheric air pressure actuated valve assembly which prevents re-energization of the servomotor of a vacuum actuated vehicle road speed control system after the brakes have been applied and the road speed control system de-energized. The device requires manual opening movement of the throttle valve by movement of the accelerator pedal, or stopping of the engine, to decrease the amount of vacuum sufficiently to let the device re-set to a condition which will permit the road speed control system to be re-energized.

US Patent:

41572823, Jun 5, 1979

Filed:

Aug 18, 1977

Appl. No.:

5/825597

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G01N 2746

US Classification:

204 1T

Abstract:

A durable and relatively inexpensive air/fuel ratio sensor for detecting oxygen concentration in exhaust gases of internal combustion engines, that does not require a separate reference atmosphere. A body of stabilized zirconium dioxide with two opposite major faces serves as a solid oxygen ion electrolyte. A catalytic electrode is on one of the faces, while a noncatalytic electrode is on the other face. The body is mounted in an exhaust pipe so that both of the electrodes are exposed to the exhaust gases.

US Patent:

39527093, Apr 27, 1976

Filed:

Oct 23, 1974

Appl. No.:

5/517211

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F02B 5304

US Classification:

123 831

Abstract:

An orbital vane rotary machine including a housing defining a cavity having two halves, each half being a cylinder which intersects with the other at a cavity minor axis. The centers of the cylinders are spaced a predetermined distance defining a cavity major axis. Trunnions are secured to the housing at each cylinder center and vanes of separate vane sets rotate about the trunnions while extending and retracting in slots in a rotor connected to an output shaft. The vanes extend and engage the housing while rotating through the cavity half where their trunnion is located and retract while rotating through the other cavity half.

US Patent:

42202183, Sep 2, 1980

Filed:

Feb 9, 1979

Appl. No.:

6/010610

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 3100

US Classification:

180176

Abstract:

A vehicle road speed control system for a transducer generating a vacuum control signal which is delivered to a flow amplifier. The flow amplifier generates a positive pressure control signal in accordance with the vacuum control signal. The positive pressure control signal powers a servomotor to control the vehicle engine throttle and maintain vehicle road speed at a desired value.

US Patent:

40057330, Feb 1, 1977

Filed:

Nov 17, 1975

Appl. No.:

5/632399

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16K 3106

US Classification:

1376254

Abstract:

A differential pressure control valve is solenoid operated on a controlled duty cycle to alternately open and close a pair of inlets to establish a desired outlet pressure. The valve member acts as a solenoid armature. It is of sandwich construction with a magnetically soft center section and a thin, wear-resistant, nonmagnetic coating on one or both sides. The nonmagnetic coatings or layers are disclosed as being made of a nonmagnetic stainless steel, while the center section is disclosed as being made of a low carbon steel having a low magnetic remanence or residual magnetization. Valve life is increased due to the wear resistance of the stainless steel, and the nonmagnetic characteristic of the stainless steel layer adjacent the field plate avoids erratic retention of the valve member against the solenoid core and field plate. The arrangement is such that the magnetic forces across the valve member during solenoid energization act in parallel.

US Patent:

41426126, Mar 6, 1979

Filed:

Sep 21, 1977

Appl. No.:

5/835239

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 1500

US Classification:

192 3G

Abstract:

A vacuum operated road speed control system release valve with vacuum in the release chamber exerting a closing force on the valve. When the release circuit is opened to atmosphere by brake actuation, vacuum is lost in the release chamber and the valve is opened by the higher pressure in the control system. The open valve then connects the higher pressure side of the servomotor of the control system to vacuum to provide a powered release.

US Patent:

43834116, May 17, 1983

Filed:

Aug 10, 1981

Appl. No.:

6/291310

Inventors:

John W. Riddel - Fenton MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F01N 302

US Classification:

60303

Abstract:

A diesel engine exhaust cleaner and burner system includes at least one exhaust cleaner member with a filter positioned therein to effect removal of particulates from a stream of exhaust gas delivered thereto via an inlet manifold. A fuel burner supplied with fuel by a fuel nozzle is operatively associated with the inlet manifold to supply the necessary heat to effect incineration of particulates collected on the filter. A cyclone duct providing a vortex chamber therein is operatively positioned downstream of the fuel nozzle and is supplied with sufficient air so as to effect both the complete combustion of the fuel and the controlled incineration of the particulates by increasing the residence time of the fuel in the reaction region within the vortex chamber and also effecting a more uniform distribution of the heat of combustion across the inlet face of the filter for the uniform heating of the particulates thereon to their combustion temperature.