Patents by Inventor Harley M. Luplow

Harley M. Luplow 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: 5339461
    Abstract: A compact, radio frequency receiver apparatus having left and right channel conductors windably disposed within a housing of the apparatus. The left and right channel electrical conductors each further have earphone transducers electrically coupled thereto. The earphone transducers may be manually, removably stored in a plurality of recesses formed in an external surface of the housing. The conductors are windably disposed on a spool within the housing of the apparatus, with the spool being rotatable freely therewithin. A spring operatively associated with the spool exerts a constant biasing force in a rewind direction to tend to constantly urge the spool in the rewind direction. A latching member, manually movable by a user via a pushbutton release member, holds the spool stationary after the conductors have been unwound from the spool an approximate, desired length.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: August 16, 1994
    Inventor: Harley M. Luplow