Patents by Inventor Calvin Douglas

Calvin Douglas 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).

  • Patent number: 9227046
    Abstract: An intravenous (IV) coupling apparatus is disclosed for fluid delivery to a patient. The coupling includes a tube having an input end and an output end, wherein the input end includes a plurality of input connections configured to releasably couple to one or more input lines in communication with one or more fluid sources, and the output end includes a plurality of output connections configured to releasably couple to one or more output lines configured to deliver fluid to the patient. The coupling includes a plurality of lumens disposed within the tube substantially along the length of the tube, wherein each lumen couples one of the input connectors in fluid communication with a corresponding output connector such that an input line is in fluid communication with a corresponding output line when the input line and output line are connected to a corresponding input connector and output connector.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: January 5, 2016
    Inventor: Calvin Douglas
  • Patent number: 7484845
    Abstract: An inventive headwear for securely placing eyeglasses is disclosed. The headwear can be, for example, a modified baseball cap having elastic keepers located upon the sides of the crown portion of the cap. The temples of a pair of eyeglasses are inserted into the keepers, the keepers exerting a downward pressure upon the temples to keep the eyeglasses securely positioned upon the visor of the headwear.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: February 3, 2009
    Inventor: Calvin Douglas
  • Publication number: 20070101480
    Abstract: An inventive headwear for securely placing eyeglasses is disclosed. The headwear can be, for example, a modified baseball cap having elastic keepers located upon the sides of the crown portion of the cap. The temples of a pair of eyeglasses are inserted into the keepers, the keepers exerting a downward pressure upon the temples to keep the eyeglasses securely positioned upon the visor of the headwear.
    Type: Application
    Filed: July 18, 2006
    Publication date: May 10, 2007
    Inventor: Calvin Douglas
  • Patent number: 6981835
    Abstract: A recreational vehicle loading and transport platform for pickups provides a base mountable in a pickup box to pivotally carry a transport platform below the upper edges of the pickup box. The transport platform carries outrigger assemblies laterally of and depending below the upper edge of the pickup box to support outer support structures of recreational vehicles straddling the pickup box sides. A pneumatic cylinder moves the forward end of the transport platform vertically to responsively tilt the transport platform for loading and unloading of recreational vehicles. A loading and unloading ramp is removably secured to the rear end of the transport platform to move between use and storage positions.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: January 3, 2006
    Inventor: Calvin Douglas Groth
  • Patent number: 6612550
    Abstract: A fence post includes a weighted base and a vertical member. The vertical member has a first end and a second end. The first end is secured to and extends substantially vertically from the weighted base. A float is provided that is axially movable along the vertical member from the first end toward the second end. A stop is spaced from the first end to limit travel of the float along the vertical member. This fence post is suited for use in wet areas, as it floats with the weighted base keeping the fence post in a stable upright condition.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: September 2, 2003
    Inventor: Calvin Douglas Foot
  • Publication number: 20020056833
    Abstract: A fence post includes a weighted base and a vertical member. The vertical member has a first end and a second end. The first end is secured to and extends substantially vertically from the weighted base. A float is provided that is axially movable along the vertical member from the first end toward the second end. A stop is spaced from the first end to limit travel of the float along the vertical member. This fence post is suited for use in wet areas, as it floats with the weighted base keeping the fence post in a stable upright condition.
    Type: Application
    Filed: November 27, 2001
    Publication date: May 16, 2002
    Inventor: Calvin Douglas Foot