Patents by Inventor Douglas Rietkerk

Douglas Rietkerk 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).

  • Natural gas compressor with scissor drive assembly
    Patent number: 9388801
    Abstract: A positive displacement reciprocating compressor for compression of natural gas. The compressor includes at least one pair of coaxial bulkheads, each bulkhead having a gas cylinder coupled thereto, and one or more a scissor drive assemblies for driving piston rams into and out of the gas cylinders to compress gas. The scissor drive assembly of the compressor includes one or more piston rams having a piston head attached thereto and movable into and out of each gas cylinder via reciprocating movement of a linkage arm assembly, coupling the piston rams to a rotatable drive shaft. The compressor can be used for compressing natural gas for use as a fuel for vehicles, appliances, generators, or the like.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: July 12, 2016
    Inventor: Douglas Rietkerk
  • NATURAL GAS COMPRESSOR WITH SCISSOR DRIVE ASSEMBLY
    Publication number: 20140294635
    Abstract: A positive displacement reciprocating compressor for compression of natural gas. The compressor includes at least one pair of coaxial bulkheads, each bulkhead having a gas cylinder coupled thereto, and one or more a scissor drive assemblies for driving piston rams into and out of the gas cylinders to compress gas. The scissor drive assembly of the compressor includes one or more piston rams having a piston head attached thereto and movable into and out of each gas cylinder via reciprocating movement of a linkage arm assembly, coupling the piston rams to a rotatable drive shaft. The compressor can be used for compressing natural gas for use as a fuel for vehicles, appliances, generators, or the like.
    Type: Application
    Filed: November 15, 2013
    Publication date: October 2, 2014
    Inventor: Douglas Rietkerk