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US 5,509,564 AGranted
Venting device
AssigneeCustom Metalcraft, Inc.
InventorRobert D. Knoop
Life of this patent
Estimating the term…
Abstract
A bung plug venting device having a threaded slot configuration for use such as in relieving internal pressure in a container for liquids is disclosed. In one embodiment, a plurality of slots are spaced at equal intervals around the threaded neck portion of the bung plug, with the upper end of the slots being positioned below the upper threads of the neck portion. The number and width of the slots will depend on the capacity of the container.
Claims10
A bung plug venting device for a container, comprising:
- a head portion;
- and
- a threaded neck portion extending from said head portion for engagement with an opening in said container;
- said threaded neck portion having a recessed interior defined by an outer circumferential wall portion and including at least one slot located in the outer circumferential wall portion of said threaded neck portion, the depth of said at least one slot corresponding to the thickness of the threads on the threaded neck portion, said at least one slot extending from below the upper threads of said threaded neck portion axially downwardly to a position adjacent a bottom wall of said threaded neck portion and being separated from said recessed interior by said outer circumferential wall portion, whereby, upon rotation of said bung plug toward the open condition, said bung plug may then relieve internal pressure within said container by allowing transfer of air or other gas to take place through said at least one slot without complete removal of said bung plug from said container.
1 more element
A bung plug venting device for a container, comprising:
- a head portion of a generally planar shape for engaging the walls of an opening in said container;
- and
- a threaded neck portion extending from said head portion for engagement with said opening;
- said threaded neck portion having upper and lower ends and with at least one slot located in the outer circumferential portion of said threaded neck portion, wherein the depth of said at least one slot corresponds to the thickness of the threads on the threaded neck portion, said at least one slot having an upper end located below the upper threads of said threaded neck portion and with said at least one slot extending along said outer circumferential portion to a position adjacent said lower end of said threaded neck portion, whereby, upon rotation of said bung plug toward the open condition, said bung plug may then relieve internal pressure within said container by allowing transfer of air or other gas to take place through said at least one slot without complete removal of said bung plug from said container.
1 more element
Dependencies are inferred from the claim text.