Patents by Inventor Mark A. Crowell

Mark A. Crowell 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).

  • RESCUE BREATHING APPARATUS
    Publication number: 20210085902
    Abstract: A rescue tube comprising a tube having a first and second end, a one-way valve and a ported double swivel elbow; wherein the one-way valve and ported double swivel elbow are connected to one another, and the one-way valve is attached to the tube.
    Type: Application
    Filed: December 3, 2020
    Publication date: March 25, 2021
    Inventor: Mark A. Crowell
  • Rescue breathing apparatus
    Patent number: 10864338
    Abstract: A rescue tube comprising a tube having a first and second end, a one-way valve and a ported double swivel elbow; wherein the one-way valve and ported double swivel elbow are connected to one another, and the one-way valve is attached to the tube.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: December 15, 2020
    Assignee: Austere Medical Group, LLC
    Inventor: Mark A. Crowell
  • RESCUE BREATHING APPARATUS
    Publication number: 20180361092
    Abstract: A rescue tube comprising a tube having a first and second end, a one-way valve and a ported double swivel elbow; wherein the one-way valve and ported double swivel elbow are connected to one another, and the one-way valve is attached to the tube.
    Type: Application
    Filed: May 18, 2018
    Publication date: December 20, 2018
    Inventor: Mark A. Crowell
  • Three axis seismic vibrator
    Patent number: 5666328
    Abstract: A three-axis seismic vibrator is provided which imparts compressional and shear wave seismic vibrations, either sequentially or simultaneously, into the Earth's surface. The seismic vibrator includes an earth-contacting baseplate which transmits vibrational energy into the Earth's surface; a support structure; a vibrator assembly pivotally supported at one end by the support structure; and servo-hydraulic control circuits which activate reciprocal vibration along the vibratory axis of the vibrator assembly and sustained oscillatory vibration of the vibrator assembly. The vibrations thus generated are transferred to the baseplate and injected into the Earth's surface. These vibrations and their reflections can then be recorded and analyzed to determine the mineral content of the Earth's surface in the immediate area.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: September 9, 1997
    Assignee: I/O Exploration Products (U.S.A.), Inc.
    Inventors: John Mark Crowell, Rhys Michael Evans, James Edward Teske