Invention Grant
- Patent Title: Pressure equalizing closure
-
Application No.: US13016380Application Date: 2011-01-28
-
Publication No.: US10577158B2Publication Date: 2020-03-03
- Inventor: Michael P. Wurster , Scott E. Bysick , Robert Waltemyer , Paul Kelley
- Applicant: Michael P. Wurster , Scott E. Bysick , Robert Waltemyer , Paul Kelley
- Applicant Address: US PA Lancaster
- Assignee: GRAHAM PACKAGING COMPANY, L.P.
- Current Assignee: GRAHAM PACKAGING COMPANY, L.P.
- Current Assignee Address: US PA Lancaster
- Agency: Stradley Ronon Stevens & Young, LLP
- Main IPC: B65D51/16
- IPC: B65D51/16 ; B65D79/00

Abstract:
The present invention provides a closure for a hot-fill container comprising: a cap member having a top surface, a bottom surface, and a wall portion having an outer surface and an inner surface wherein the inner surface comprises threads to mate with a threaded neck finish of a hot-fill container; a flexible diaphragm member comprising: at least one flexible portion in a first position and a sealing lip portion to seal a liquid in the container thus preventing the liquid from traveling to the threaded neck finish of the container; and a disc member interposed between the cap member and the diaphragm member, wherein the disc member comprises: a hydrophobic filter membrane and at least one vent providing a path for air to travel from an area near the threads to the hydrophobic filter member, wherein the flexible diaphragm member flexes to compensate for a change in pressure within the container by transitioning downwards in response to a decrease in pressure and/or by transitioning upwards in response to an increase in pressure.
Public/Granted literature
- US20110186536A1 PRESSURE EQUALIZING CLOSURE Public/Granted day:2011-08-04
Information query