Patents by Inventor Frank M. Carpenter

Frank M. Carpenter 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).

  • Cam filter wheel
    Patent number: 4176916
    Abstract: A cam filter wheel apparatus is disclosed for tilting interference filters in order to achieve variation in the light wavelength transmitted by each filter. The wheel apparatus contains a number of filters each mounted so as to pivot and change its inclination with respect to an incident light beam as the filter wheel rotates each filter through the light path. The pivot motion is achieved by a cam follower associated with each filter which rides on a stationary cam track.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: December 4, 1979
    Assignee: Neotec Corporation
    Inventor: Frank M. Carpenter