Patents by Inventor Leonard Henry Friedland

Leonard Henry Friedland 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).

  • Searchlight
    Patent number: 10415796
    Abstract: A projector comprises an arc lamp (110) with a parabolic reflector (111) in front of this a double concave lens (114) and then a pair of convex concave lenses (170, 172) to enable the projector to emit a highly collimated beam.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: September 17, 2019
    Inventor: Leonard Henry Friedland
  • Military projector with relatively movable negative and positive lenses
    Patent number: 9958140
    Abstract: A military projector comprises a tubular housing that contains a high intensity lamp, a reflecting mirror behind the high intensity lamp, a negative lens which is carried in a first mounting member located in front of the lamp, and a pair of positive meniscus lenses which axe mounted in a second mounting member spaced from and movable relative to the negative lens so that the distance between the negative and positive lenses can be varied. A carrier member having a clear opening and an opening containing a filter is located between the negative and positive lenses. A moving means moves the carrier member between a first position in which the light passes through the filter before reaching the positive meniscus lenses and a second position in which the light passes through the clear opening. An elongated tubular electromagnetic shield extends beyond the meniscus lenses.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: May 1, 2018
    Inventor: Leonard Henry Friedland
  • MILITARY PROJECTOR
    Publication number: 20160138783
    Abstract: A military projector comprises a tubular housing that contains a high intensity lamp, a reflecting mirror behind the high intensity lamp, a negative lens which is carried in a first mounting member located in front of the lamp, and a pair of positive meniscus lenses which axe mounted in a second mounting member spaced from and movable relative to the negative lens so that the distance between the negative and positive lenses can be varied. A carrier member having a clear opening and an opening containing a filter is located between the negative and positive lenses. A moving means moves the carrier member between a first position in which the light passes through the filter before reaching the positive meniscus lenses and a second position in which the light passes through the clear opening. An elongated tubular electromagnetic shield extends beyond the meniscus lenses.
    Type: Application
    Filed: June 27, 2014
    Publication date: May 19, 2016
    Inventor: Leonard Henry FRIEDLAND
  • SEARCHLIGHT
    Publication number: 20130223076
    Abstract: A projector comprises an arc lamp (110) with a parabolic reflector (111) in front of this a double concave lens (114) and then a pair of convex concave lenses (170, 172) to enable the projector to emit a highly collimated beam.
    Type: Application
    Filed: October 28, 2011
    Publication date: August 29, 2013
    Inventor: Leonard Henry Friedland
  • Searchlight
    Patent number: D683646
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: June 4, 2013
    Inventor: Leonard Henry Friedland