Patents Assigned to Keystone Mfg. Co. Inc.
  • System for vacuum evacuation and sealing of plastic bags
    Patent number: 5893822
    Abstract: This invention involves a tapered vacuum bag sealer that can be used to seal conventional plastic bags and to vacuum canning jars or other food containers. The rear of the sealer housing has a connection for a PVC tube or other flexible tube that will extend to the jar or container being vacuumed to remove air therefrom. This rear connection avoids the necessity of the housing lid being opened before this vacuum procedure could be accomplished.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: April 13, 1999
    Assignee: Keystone Mfg. Co., Inc.
    Inventors: Joseph A. Deni, Leonard A. Deni
  • Electric grill
    Patent number: 5845562
    Abstract: A grill for cooking food is provided that has an inclined cooking surface with diagonally positioned ribs projecting therefrom. The ribs have a rounded elongated configuration that all point toward a liquid drain. The ribs have liquid flow channels there between to facilitate liquid flow down the incline into a collection vessel. The cooking surface is surrounded by a retaining wall for holding food in position during a cooking operation.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: December 8, 1998
    Assignee: Keystone Mfg. Co., Inc.
    Inventors: Leonard A. Deni, Joseph A. Deni
  • Electric grill
    Patent number: D435755
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: January 2, 2001
    Assignee: Keystone Mfg. Co. Inc.
    Inventor: Leonard A. Deni
  • Vacuum sealer
    Patent number: D342532
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: December 21, 1993
    Assignee: Keystone Mfg. Co., Inc.
    Inventor: Frank Deni