Patents Assigned to Dewall Industries
  • Patent number: 8220649
    Abstract: A venting liner is connectable in fluid communication between a closure and an interior of a device for venting gas from the interior into the ambient atmosphere. The venting liner has an outer foam layer defining an inner surface and an outer surface, a plurality of fluid-flow apertures spaced relative to each other, extending between the inner and outer surfaces, and forming substantially vertical fluid-flow paths through the outer layer, and a plurality of relatively raised portions extending outwardly relative to the outer surface adjacent to respective fluid-flow apertures. A plurality of the relatively raised portions are engageable with the closure, define a substantially horizontal, tortuous fluid-flow path between the outer surface and the closure, and are in fluid communication with a plurality of fluid-flow apertures for venting gas flowing substantially vertically through the fluid-flow aperture(s) and, in turn, substantially horizontally between the outer surface and the closure.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: July 17, 2012
    Assignee: Dewal Industries
    Inventor: Edward D. Walsh
  • Patent number: 7784630
    Abstract: There is provided a gasket element having at least one first inner layer and at least one first outer layer. Each of the at least two layers have differing material properties. The gasket element is well suited to cooperate with an ingress/egress opening of a container that in turn is well suited to retain an active pressure and/or temperature sensitive substance. The gasket element may be operatively connected to a cap element that is suitable to selectively close the at least one ingress/egress opening of the container. The cap element may be a stand alone sealing cap or may be operatively associated with a spray nozzle or the like.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: August 31, 2010
    Assignee: Dewall Industries
    Inventor: Edward D. Walsh
  • Patent number: 7461754
    Abstract: There is provided a gasket element having at least one first inner layer and at least one first outer layer. Each of the at least two layers have differing material properties. The gasket element is well suited to cooperate with an ingress/egress opening of a container that in turn is well suited to retain an active pressure and/or temperature sensitive substance. The gasket element may be operatively connected to a cap element that is suitable to selectively close the at least one ingress/egress opening of the container. The cap element may be a stand alone sealing cap or may be operatively associated with a spray nozzle or the like.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: December 9, 2008
    Assignee: DeWAL Industries
    Inventor: Edward D. Walsh