Patents by Inventor CURTIS A. KALLHOFF

CURTIS A. KALLHOFF 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).

  • Dual integrated air heating system
    Patent number: 11739987
    Abstract: An air heating apparatus may be mounted on a common base and define a pair of air flow paths. The air heating apparatus may include a housing forming an outer envelope through which the air flow paths extend, with the air flow path being separate from each other at all locations in the interior of the outer envelope. The interior of the housing may be divided into two subhousings defining two separate subchambers. The housing may have inlet and outlet openings extending through the outer envelope for each of the air flow paths of the subchambers. At least two air heating assemblies may each be configured to heat air moving along a separate one of the air flow paths, the air heating assemblies being positioned in the interior of the housing with each of the air heating assemblies being positioned in a respective one of the subchambers of the subhousings.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: August 29, 2023
    Assignee: JR Koop, Inc.
    Inventors: Curtis A. Kallhoff, Nathan G. Thompson, Wesley W. Stofferan
  • DUAL INTEGRATED AIR HEATING SYSTEM
    Publication number: 20210372670
    Abstract: An air heating apparatus may be mounted on a common base and define a pair of air flow paths. The air heating apparatus may include a housing forming an outer envelope through which the air flow paths extend, with the air flow path being separate from each other at all locations in the interior of the outer envelope. The interior of the housing may be divided into two subhousings defining two separate subchambers. The housing may have inlet and outlet openings extending through the outer envelope for each of the air flow paths of the subchambers. At least two air heating assemblies may each be configured to heat air moving along a separate one of the air flow paths, the air heating assemblies being positioned in the interior of the housing with each of the air heating assemblies being positioned in a respective one of the subchambers of the subhousings.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Inventors: CURTIS A. KALLHOFF, NATHAN G. THOMPSON, WESLEY W. STOFFERAN
  • AIR HEATING APPARATUS USEFUL FOR HEATING AN AIRCRAFT INTERIOR
    Publication number: 20160023770
    Abstract: An air heater apparatus may include a housing having an interior with an air path extending between an upstream air inlet in the housing and a downstream air outlet in the housing, and a motor mounted on the housing. The apparatus may also include a fan rotated by the motor and positioned in the air path to move air along the air path, an air heating assembly mounted on the housing and configured to heat air moving along the air path, and a gas detector being positioned in the air path in the interior of the housing and configured to detect a gas level in the air path.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 28, 2016
    Inventors: NATHAN THOMPSON, CURTIS KALLHOFF