Patents by Inventor Howard C. Stewart, Jr.

Howard C. Stewart, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5649746
    Abstract: A self-purging vehicle braking system and method of purging gas from same are provided by the present invention. The braking system preferably includes a disk brake and a master cylinder in fluid communication with the disk brake. The master cylinder preferably has a piston chamber, a piston disposed within the piston chamber and moveable between an extended and a retracted position which defines a working volume of fluid moved by the piston, and a fluid reservoir in fluid communication with the piston chamber and adapted to supply fluid thereto. A manifold connects in fluid communication with the piston chamber and the disk brake. An inlet brake line interconnects the manifold to the disk brake for supplying brake fluid to the disk brake, and an outlet brake line interconnects the disk brake to the manifold for returning fluid from the disk brake. A flow controller connects in fluid communication with the inlet and outlet brake lines to control fluid flow during operation of the braking system.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: July 22, 1997
    Inventor: Howard C. Stewart, Jr.
  • Patent number: 5630656
    Abstract: A vehicle braking system is provided for delaying the flow of brake fluid to the rear brakes to reduce the risk of locking the rear brakes. The braking system preferably has a master cylinder, a pair of disk brakes respectively positioned on a pair of rear wheels of a vehicle, and inlet and outlet brake lines each respectively connected to the master cylinder and the pair of rear disk brakes. A fluid circulator valve preferably is positioned between and in fluid communication with the master cylinder and the pair of rear disk brakes and is connected to the inlet and outlet brake lines. A rear brake delay valve preferably is positioned between and in fluid communication with the circulator valve and the pair of rear disk brakes and is connected to the inlet brake line.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: May 20, 1997
    Inventor: Howard C. Stewart, Jr.
  • Patent number: 5415134
    Abstract: An engine cooling system is provided for compactly and more efficiently pumping cooling fluid through an engine and a radiator of a vehicle. The engine cooling system has an engine, a charge storage device in electrical communication with the engine for supplying a charge to the engine, and a radiator in fluid communication with the engine for cooling fluid passing through the radiator from the engine. A pump is in fluid communication with the engine and the radiator for pumping fluid from the engine to the radiator and to the engine from the radiator. A fan, preferably compactly connected to the pump, cooperates with the radiator for cooling fluid circulating through the radiator, and a temperature sensor is connected to the engine for sensing the temperature of the engine. A pump control is in electrical communication with the temperature sensor and is connected to the pump for operating the pump when the temperature of the engine exceeds a predetermined value.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: May 16, 1995
    Assignee: Stewart Components
    Inventor: Howard C. Stewart, Jr.
  • Patent number: 5350223
    Abstract: A vehicle braking system is characterized by being constructed for self-purging and removal of air from the brake lines to thereby prevent the accumulation of air therein so as to provide a more effective braking system. The braking system has a master cylinder including a fluid reservoir for supplying brake fluid to the braking system and a hydraulically controlled disk brake having a caliper including a plurality of cylinders arranged in the caliper and a plurality of respective hydraulically actuable brake pistons guided in the cylinders. An inlet brake line interconnects the master cylinder and the caliper for supplying brake fluid to the caliper and an outlet brake line also interconnects the master cylinder and the caliper for receiving brake fluid from the caliper.
    Type: Grant
    Filed: February 8, 1993
    Date of Patent: September 27, 1994
    Assignee: Stewart Components
    Inventor: Howard C. Stewart, Jr.
  • Patent number: 5310252
    Abstract: A vehicle braking system is characterized by being constructed for self-purging and removal of air from the brake lines to thereby prevent the accumulation of air therein so as to provide a more effective braking system. The braking system has a master cylinder including a fluid reservoir for supplying brake fluid to the braking system and a hydraulically controlled disk brake having a caliper including a plurality of cylinders arranged in the caliper and a plurality of respective hydraulically actuable brake pistons guided in the cylinders. An inlet brake line interconnects the master cylinder and the caliper for supplying brake fluid to the caliper and an outlet brake line also interconnects the master cylinder and the caliper for receiving brake fluid from the caliper.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: May 10, 1994
    Assignee: Stewart Components
    Inventor: Howard C. Stewart, Jr.
  • Patent number: D608373
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: January 19, 2010
    Inventor: Howard C. Stewart, Jr.