Patents by Inventor Denis McDaid

Denis McDaid 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).

  • Lockable telephone plug apparatus
    Patent number: 5119419
    Abstract: A lockable telephone plug apparatus comprises a shank member for insertion into a line jack unit said shank member having suitable connections for connecting with the electrical connections in the line jack unit. The shank member has a movable locking member mounted thereon and arranged to be in use moved by a locking means to engage a part of the line jack unit socket to prevent removal of the telephone plug apparatus from the line jack unit. The shank member and the locking means are mounted in a housing.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: June 2, 1992
    Inventor: Denis McDaid
  • Telephone lock
    Patent number: 4964284
    Abstract: A telephone lock for preventing the plug of a telephone from being inserted into a corresponding line jack unit comprises a locking means including a shank member of a suitable length and size to be accommodated in the socket of a line jack unit in substitution for a telephone plug proper. The shank member has a movable locking member mounted thereon which is arranged to be in use moved by the locking means to engage a part of the line jack unit socket to prevent removal of the telephone lock from the line jack unit.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: October 23, 1990
    Inventor: Denis McDaid