Patents by Inventor Samuel F. Erwin

Samuel F. Erwin 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: 5617843
    Abstract: An apparatus for supporting and adjusting a solar oven with respect to the sun, the apparatus having a horizontally disposed main frame and a pair of vertical, spaced apart supports mounted to the main frame, the solar oven being pivotally mounted to the vertical supports; with means to lock the solar oven in a variety of positions with respect to the sun.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: April 8, 1997
    Inventor: Samuel F. Erwin
  • Patent number: 4378790
    Abstract: A demountable solar oven includes a principal base upon which is mounted a secondary supporting base collar which contains the essential operating parts and which supports two removable arms at their base whose upper end form diametrically opposed pivots for receiving the appropriately disposed pivots of the cooking chamber. The food basket provided with similarly diametrically opposed pivots is disposed interiorly of the cooking chamber and by virtue of a weight disposed at the bottom thereof the wire basket always maintains a horizontal position irrespective of the angle of the oven itself. A transparent hemispherical cover including a shadow box indicator is disposed over the oven in the direction of the sun and a series of individual plate reflectors are hinged together by means of pins, a certain number of which pins are utilized to attach the reflectors to the oven rim.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: April 5, 1983
    Inventor: Samuel F. Erwin
  • Patent number: 4125109
    Abstract: A solar oven of improved efficiency wherein an octagonal radiation absorbing base is provided with eight primary reflectors and eight secondary reflectors to direct the solar energy thereupon. Each primary reflector is affixed to one side of the base at an angle of about 55.degree. thereto. The triangular secondary reflectors are interposed between adjacent primary reflectors at an angle of about 57.degree. to the base. The article to be heated is placed on the base and a transparent eight-sided cover is placed thereover. The entire apparatus is rotated and tilted so that the base is orthogonal to the incident solar energy.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: November 14, 1978
    Inventor: Samuel F. Erwin
  • Patent number: D268980
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: May 17, 1983
    Inventor: Samuel F. Erwin