Patents by Inventor Calvin L. Espy

Calvin L. Espy 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: 5969317
    Abstract: An item recognition system and method which is particularly suited for automating entry of items too small to carry readable bar code labels. The system includes a camera which digitizes the image to produce a digitized image and a gray-scale digitized image. A binary image of the gray-scale image is then produced from which the computer records an image of the item, and a computer coupled to the camera which digitizes the image to produce a digitized image and a gray-scale digitized image. A binary image of the gray-scale image is then produced from which the computer identifies the item from the binary image and obtains the price from a price-lookup file.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: October 19, 1999
    Assignee: NCR Corporation
    Inventors: Calvin L. Espy, Jianzhong Huang, John C. Ming, Antai Peng, Barry D. Briggs
  • Patent number: 4216619
    Abstract: A horticulture device is provided for rotating a plant as moisture transpires from the plant and evaporates from the container holding the plant. The device includes a spring which is linearly distorted due to gravity as the plant is watered and which is restored as the plant releases the water and the water evaporates from the container. The spring is connected to a motion converting mechanism that converts linear distortion of the spring to rotational motion which in turn is used to rotate the plant.
    Type: Grant
    Filed: February 14, 1979
    Date of Patent: August 12, 1980
    Inventor: Calvin L. Espy