Patents by Inventor Neil W. Kroth

Neil W. Kroth 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: 4458124
    Abstract: A three-position toggle switch having a transparent toggle lever (28) illuminated in its natural color in the center position and illuminated in second and third colors in its respective left and right positions. Molded color filters (32, 34) are structurally attached to the interior end of the lever by dovetail slots (28k, 28m) and dovetail ribs (32b, 34b) and are retained thereon by confinement within the interior switch cavity (2a). The filters (32, 34) have offset legs (32a, 32b) depending toward a lamp (8) in the switch base (2) to reflect or redirect light rays from the lamp (8) to enhance color separation while permitting an inexpensive, unfocused lamp to be utilized.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: July 3, 1984
    Assignee: Eaton Corporation
    Inventors: Neil W. Kroth, Gursharan P. S. Nat
  • Patent number: 4076323
    Abstract: A fluid brake system for a vehicle includes a pair of separate brake valves, each normally held in a non-braking position by pressure applied thereto through an additional valve. The additional valve may be moved to a position wherein such pressure is released from the brake valves, whereupon the brake valves move to braking positions.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: February 28, 1978
    Assignee: Caterpillar Tractor Co.
    Inventor: Neil W. Kroth
  • Patent number: 4076324
    Abstract: In a vehicle including front and rear wheels having brakes associated therewith, a single master cylinder actuates a first brake valve operatively associated with the front wheels of the vehicle, and also a second brake valve operatively associated with the rear wheels of the vehicle.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: February 28, 1978
    Assignee: Caterpillar Tractor Co.
    Inventor: Neil W. Kroth
  • Patent number: 3977301
    Abstract: A fluid control circuit for regulating fluid flow between a pressurized fluid source and a hydraulic motor, including a control valve having a movable spool for communicating fluid entering an inlet chamber from the source with service chambers in communication with the motor, a dump valve limiting communication of the inlet chamber with a drain in response to spring means and fluid communicated to the dump valve through a passage open to either of the service chambers when it is placed in communication with the inlet chamber by the control valve spool, the passage otherwise communicating the dump valve with a drain so that fluid communication between the inlet chamber and drain is limited only by the spring means. The force of the spring means may also be varied in certain embodiments of the invention.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: August 31, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Neil W. Kroth, Kenneth R. Lohbauer, James E. Scheidt