Patents Assigned to Thomas J. Lipton Co.
  • Patent number: 5580408
    Abstract: A method and apparatus are described for tag and thread assembly for tagged infusion packets. Spaced tags from a strip of tags and a length of thread are laid over each other on the periphery of a first assembly wheel and the thread is drawn out in loops between successive tags. The spaced tags and looped thread are transferred to a second assembly wheel where they are connected to a web of sheet material that is to form the infusion packets. The web is subsequently formed into a series of compartments in which infusion material is contained. The compartments are severed from the web for forming the individual packets and the thread is simultaneously severed between the packets.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: December 3, 1996
    Assignee: Thomas J. Lipton Co.
    Inventors: Geoffrey W. Vernon, James Goodwin, Andrew J. Cleall
  • Patent number: 5548947
    Abstract: Packets are produced by forming a continuous web (W) of packaging material into a tubular form around a tube (4) through which the packet filling material is delivered, the individual packets being sealed and severed from the web as each dose of filling material is delivered. A valve (24) to control the dosing is provided at the exit end of the delivery tube. The sealing and severing of the packets is performed by mutually transverse pairs of rotors (36, 38) the arms (92) of which interdigitate to make successive seals in mutually transverse directions, so forming tetrahedral packets.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: August 27, 1996
    Assignee: Thomas J. Lipton Co.
    Inventors: Kevin R. Fincham, David R. Seaward, Graham L. Shirley, Geoffrey W. Vernon
  • Patent number: 5399224
    Abstract: Tags and thread are assembled together for the manufacture of tagged articles such as infusion packets in which each tag is attached to the packet by a length of thread. The thread is held in a looped form between the tag and the packet before use. For the assembly of the tags and thread and to increase the length of thread attaching each tag, means are provided for forming a doubled-over loop that can be trapped between the tag and the packet.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: March 21, 1995
    Assignee: Thomas J. Lipton Co.
    Inventors: Geoffrey W. Vernon, Andrew Cleall
  • Patent number: D329984
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: October 6, 1992
    Assignee: Thomas J. Lipton Co.
    Inventor: Huberdina J. H. M. Walravens
  • Patent number: D362948
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: October 10, 1995
    Assignee: Thomas J. Lipton Co.
    Inventors: Michael J. Cahill, Geoffrey W. Vernon