Patents by Inventor Rolf Grob

Rolf Grob 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: 6444158
    Abstract: Method of securing a separate handle (18) to a plastic blow-molded container, the container having a molded external flange which is not subject to stretching during the blow-molding process. The flange has a substantially flat underside face and serves as a rigid support for the handle (18) when a substantially flat upper abutment surface of the handle (18) is positioned against the flange. Preferably, the upper end of the handle (18) has a downwardly extending lug (15) which is surrounded by the blow-molded sidewall of the container. The preform and handle (18) can be brought together into position where the upper end of the handle is adjacent to the underside of the external flange by relative movement of the preform and handle (18) towards each other along a first path which is substantially perpendicular to the longitudinal axis of the preform.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: September 3, 2002
    Assignee: Continental PET Technologies, Inc.
    Inventors: Rolf Grob, Suppayan M. Krishnakumar, Harry L. Ieuan, Thomas E. Nahill
  • Patent number: 6338415
    Abstract: A method of manufacturing a handled plastic container which includes the steps of: a) positioning a preformed handle and a synthetic resin preform within an open blow mold without mutual engagement of said handle and preform; said handle including upper retaining means and lower retaining means and said preform including a molded engagement portion adapted to engage with the upper retaining means of the handle; b) causing the upper retaining means of the handle to interconnect with the engagement portion of the preform after the handle and preform have been separately positioned within the blow mold; and c) stretch blow molding the preform in the blow mold wherein said blow molding stretches the preform beneath the engagement portion into blow mold to form a container and expands the sidewall of the preform so as to retain the upper retaining means of the handle in interconnecting relation with the engagement portion of the preform.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: January 15, 2002
    Assignee: Continental PET Technologies, Inc.
    Inventor: Rolf Grob
  • Patent number: 6179143
    Abstract: A method of manufacturing a handled plastic container which includes the steps of: a) positioning a preformed handle and a synthetic resin preform within an open blow mould without mutual engagement of said handle and preform; said handle including upper retaining means and lower retaining means and said preform including a moulded engagement portion adapted to engage with the upper retaining means of the handle; b) causing the upper retaining means of the handle to interconnect with the engagement portion of the preform after the handle and preform have been separately positioned within the blow mould; and c) stretch blow moulding the preform in the blow mould wherein said blow moulding stretches the preform beneath the engagement portion into blow mould to form a container and expands the sidewall of the preform so as to retain the upper retaining means of the handle in interconnecting relation with the engagement portion of the preform.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: January 30, 2001
    Assignee: Continental PET Technologies, Inc.
    Inventor: Rolf Grob