Patents by Inventor John M. Dougherty

John M. Dougherty 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).

  • Fluid level measuring device having at least one compressible member
    Patent number: 7134220
    Abstract: A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube onto which lugs can be directly attached. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft that is molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: November 14, 2006
    Assignee: Orscheln Products LLC
    Inventors: Curtis H. Porter, John M. Dougherty, Steve Marek, Michael Halferty, Jeff Tayon
  • Connection system for a fluid level measuring device
    Patent number: 6935044
    Abstract: A connection system for a fluid level measuring system is disclosed. The disclosed connection system comprises an outer member (also known as a boss), at least one retaining means or clip, and a tube that has been previously shaped and in receptive within the outer member. The end of the tube not received within the outer member is associated with a cap or handle for inserting and removing a fluid level indicator blade (or dipstick).
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: August 30, 2005
    Assignee: Orscheln Products LLC
    Inventors: John M. Dougherty, Michael H. Schmidt, Scott A. Dierks, Steven W. Marek
  • Fluid level measuring device having at least one compressible member
    Publication number: 20040143985
    Abstract: A fluid level measuring device, also referred to as a dipstick, for measuring the fluid level in a fluid reservoir or tank, such as an oil pan or transmission reservoir in an internal combustion engine. The fluid level measuring device includes a stationary tube onto which lugs can be directly attached. The dipstick assembly includes a fluid level indicator measuring blade attached to an elongated shaft that is molded into a plastic handle assembly. The plastic handle assembly includes a bayonet type locking mechanism for locking the handle to the stationary tube assembly. A compressible seal forms a pressurized seal between the stationary tube assembly and the handle.
    Type: Application
    Filed: December 19, 2003
    Publication date: July 29, 2004
    Inventors: Curtis H. Porter, John M. Dougherty, Steve Marek, Michael Halferty, Jeff Tayon
  • Connection system for a fluid level measuring device
    Publication number: 20020189344
    Abstract: A connection system for a fluid level measuring system is disclosed. The disclosed connection system comprises an outer member (also known as a boss), at least one retaining means or clip, and a tube that has been previously shaped and in receptive within the outer member. The end of the tube not received within the outer member is associated with a cap or handle for inserting and removing a fluid level indicator blade (or dipstick).
    Type: Application
    Filed: June 13, 2002
    Publication date: December 19, 2002
    Inventors: John M. Dougherty, Michael H. Schmidt, Scott A. Dierks, Steven W. Marek