Patents by Inventor Carl Toft

Carl Toft 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).

  • Logical display for a breathing apparatus mask
    Patent number: 6899101
    Abstract: A mask and regulator for a self-contained breathing apparatus (SCBA) having a lens and a nozzle, the regulator being adapted for connection to the nozzle. A bifurcated display is mounted on the regulator for displaying amounts of pressure through a port communicating with the lens on either side of the nozzle. A high pressure connection to the source of breathing gas is connected to a transducer assembly for indicating the pressure to the bifurcated display on the regulator on either side. The display provides pressure values through the exterior of the lens in a bifurcated manner analogous to an arcuate gauge display.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: May 31, 2005
    Assignee: Survivair Respirators, Inc.
    Inventors: David V. Haston, Nicolo J. Luzie, Jr., Carl E. Schaefer, Carl Toft, John Wippler
  • Logical display for a breathing apparatus mask
    Publication number: 20030234018
    Abstract: A mask and regulator for a self-contained breathing apparatus (SCBA) having a lens and a nozzle, the regulator being adapted for connection to the nozzle. A bifurcated display is mounted on the regulator for displaying amounts of pressure through a port communicating with the lens on either side of the nozzle. A high pressure connection to the source of breathing gas is connected to a transducer assembly for indicating the pressure to the bifurcated display on the regulator on either side. The display provides pressure values through the exterior of the lens in a bifurcated manner analogous to an arcuate gauge display.
    Type: Application
    Filed: October 22, 2002
    Publication date: December 25, 2003
    Inventors: David V. Haston, Nicolo J. Luzie, Carl E. Schaefer, Carl Toft, John Wippler
  • Emergency worker and fireman's dual emergency warning system
    Patent number: 6091331
    Abstract: A self-contained breathing apparatus (SCBA) with a personal alert safety system (PASS) having a tank of breathing gas serving a first stage regulator connected to a mask having a demand regulator. A PASS is provided with a first audio alarm within the PASS and a circuit in the PASS which senses movement of a user of the SCBA. The PASS sounds an audio alarm after a pre-established time of non-movement of a user. A remote personal safety system (R-PASS) is attached to a location remote from the PASS, and a communication link connects the PASS to the R-PASS for sounding the audio alarm at the remote location.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: July 18, 2000
    Assignee: Bacou USA Safety, Inc.
    Inventors: Carl Toft, David V. Haston, Carl E. Schaefer, Duane E. Decker