Patents Assigned to John Drew (London) Limited
  • Production of insoles
    Patent number: 4563787
    Abstract: A shoe or sandal is chosen which fits the patient's foot. One or more blanks of thermosoftening expanded plastics (e.g. an expanded cross-linked polyethylene) for constituting the insole are heated above the softening temperature and inserted in the shoe. The shoe is fitted on the patient's foot and the patient is walked until the insole is below the softening temperature. The insole may remain in the shoe or may be transferred to the patient's own footwear.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: January 14, 1986
    Assignee: John Drew (London) Limited
    Inventor: John A. Drew