Patents Assigned to B-H Instrument Company, Inc.
  • Patent number: 4145231
    Abstract: A film cleaner and method for cleaning motion picture film. The cleaner includes a friction-driven roll, spools of cleaning tape, take-up rolls to draw the tapes from the spools, means for contacting the tapes with the film, and a gearing mechanism connecting the friction-driven roll with the take-up rolls. The film cleaning method includes driving the friction-driven roll with film running through a film delivery and take-up system, contacting the surfaces of the film with the cleaning tapes, and transferring the movement of the friction-driven roll into movement of the take-up rolls to draw the tapes from the spools. Thus, the take-up rolls are driven by the friction-driven roll and essentially clean portions of the tapes contact the film.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: March 20, 1979
    Assignee: B-H Instrument Company, Inc.
    Inventor: Harry W. Heckman