Patents Assigned to Robert H. Underwood
  • Patent number: 4128215
    Abstract: An improved textile spool having a removable plug element inserted at the one or both ends of the hollow tube of the spool, the plug element having a tongue element therein extending axially and inwardly when the plug is engaged within the end of the spool, the tongue element having a raised projection on its outward external surface, and the hollow tube having a circular passageway therein, whereby, in the assembled condition, the projection fits in an interlocking relationship within the passageway, and whereby the plug element may be easily removed by an axial outward force when the tongue element is moved out of an interlocking relationship.
    Type: Grant
    Filed: April 13, 1977
    Date of Patent: December 5, 1978
    Assignees: Robert H. Underwood, Richard P. Crowley
    Inventor: Robert H. Underwood