Patents Assigned to Dynavac, Inc.
  • Patent number: 4778031
    Abstract: The escape device of the present invention comprises an escape chute having an outer and an inner tube, the outer tube consisting of heat resistant material which surrounds the inner tube, the inner tube having a panel extending over a major portion such that an object in the chute contacting the panel will have its rate of descent retarded. A mounting bracket is associated with the upper end of the chute, the inner tube being attached to the mounting bracket such that a tapered entry from the upper end of the chute to a point below the upper end of the chute is formed. The outer tube is attached to the mounting bracket independent of the inner tube, so that the outer tube does not have to absorb load-carrying stress associated with objects descending in the chute. An air gap for insulation and ventilation is formed between the inner and outer tube.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: October 18, 1988
    Assignee: Dynavac, Inc.
    Inventor: Yoram Curiel
  • Patent number: 4681186
    Abstract: An escape device having a tubular escape chute with upper and lower ends. At least one zipper extends longitudinally at least along a portion of the chute in order to provide for entry into or exit out of the chute at different elevations. The chute has a friction-creating material which extends through a major portion of the chute's longitudinal extent thereby permitting an individual descending in the chute and contacting the panel to have his or her rate of descent retarded. The inner chute may have inner pleats resiliently maintained by an elastic member. The chute may consist of an inner tube and an outer tube.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: July 21, 1987
    Assignee: Dynavac, Inc.
    Inventors: Thomas Leisman, Jon Huston