Patents by Inventor Mack S. Johnston

Mack S. Johnston 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: 4728010
    Abstract: A keg tapper for use with a keg having a neck with a closure valve carried therein and a flange with a tapered edge on the neck. An arrangement for attaching the tapper at the flanged neck so that completion of the attachment opens the inner valve of the keg closure. A plunger carried in the keg tapper with an arrangement for moving the plunger axially within the tapper body to engage the keg closure and open the outer valve. A keg tapper which can be utilized in the tavern configuration and in the picnic configuration.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: March 1, 1988
    Inventor: Mack S. Johnston
  • Patent number: 4162574
    Abstract: A cutter for cutting facial hair in the vicinity of the nose and ears employing a body portion having a cutting end with teeth upstanding therefrom and cutting means cooperating with the teeth to cut the hair which extends in between the teeth. The cutting means includes a coil rotatably carried within the housing which is rotated by the user when the cutter is placed in the vicinity of the nostril and ears to effect the cuttings of the hair lying in between the teeth.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: July 31, 1979
    Inventor: Mack S. Johnston
  • Patent number: 4005813
    Abstract: A single-opening beer keg is produced from a beer keg of conventional configuration which has a bung hole in the side wall and a dispensing opening in the top wall thereof, by closing the dispensing opening and the bung hole; moving the top wall inwardly to provide a wall of substantially spherical configuration and with an inner peripheral chine; moving the center portion of the bottom wall outwardly until it is in substantial horizontal alignment with the lower end of the side wall; and providing an opening in the center portion of the bottom wall to receive a valve assembly. An annular protective collar can be secured to the lower end of the side wall to protect the valve assembly during shipment of the keg.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: February 1, 1977
    Inventor: Mack S. Johnston