Robert D Dempsey

US Patent:

7909192, Mar 22, 2011

Filed:

May 12, 2006

Appl. No.:

11/433601

Inventors:

Robert J. Dempsey - Trumbull CT, US
Roland P. Weil - Woodbury CT, US
Geeta Govindan - Naugatuck CT, US
Reine Smirz - Gastonia NC, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

B65D 51/16

US Classification:

22020303, 22020317, 22020318, 220373

Abstract:

The invention is a vent for use with a container, such as commercial steel pails and drums, and a method for venting containers. The vent has a cap seal with one or more semipermeable membranes covering an orifice in the cap seal. The membrane prevents the passage of at least one atmospheric component, but allows the free passage of air. When a product is filled into the container at an elevated temperature and cools, a vacuum is formed within the container. The resulting vacuum opens a vacuum release device in the vent and pulls air through a hole in the cap seal, which is protected by a micro-porous membrane. The venting of air into the container relieves the vacuum without damage to the container or the product within the container.

US Patent:

55137709, May 7, 1996

Filed:

Jul 10, 1995

Appl. No.:

8/500279

Inventors:

Robert T. Seeley - Brookfield Center CT
Robert J. Dempsey - Trumbull CT

Assignee:

Olin Corporation - Cheshire CT

International Classification:

B65D 140

US Classification:

220729

Abstract:

An insert is positioned in the upper end of a pail, which pail contains a liquid. The insert blocks entry of a child's head into the pail. The insert is screwed into the upper end of the pail. Mating locking detents are provided on the pail and on the insert so that the insert, once screwed into the pail, cannot be thereafter unscrewed from the pail. The insert allows ready withdrawal of the liquid from the pail. A child in the vicinity of a pail equipped with the aforesaid insert is protected from drowning in a liquid contained in the pail because insert prevents a child from accidentally, or intentionally, inserting his or her head into the pail.