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US3733771A Expired / Lapsed US ⏱️ 0.0 years remaining

Closure means and method

Assignee: Individual
•
Filing: 1971-03-11
•
Granted: 1973-05-22
•
Expires: 1991-03-11
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Abstract

Abstract A closure for fragile containers of gassy liquids having a depending volumetric member extending down into the interior of the container to displace free gas from within the container, thereby substantially reducing or completely eliminating the chance of an explosion should the container be broken. The member occupies a volume such that when the container is filled with a usual amount of liquid either all free gas is purged by introducing the member or a small volume of free gas is left not exceeding the amount by which the liquid will expand if heated to the highest temperature normally expected to be encountered in use. The member is either a hollow, flexible walled body or composed of a cellular foam so as to be compressible under liquid thermal expansion forces to relieve excess pressure on the container, or is a hollow body provided with a small opening to admit liquid under expansionary pressures. The container is sealed by the member either in cooperation or in unitary construction with a cap.

Inventors

  • 👤 W Megowen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 02:39
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/24

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 114 words
A method for closing a fragile container having an outlet orifice and mostly filled with a gassy liquid so as to render said filled container non-explosive comprising, displacing at least most free gas from within said container by introducing a volumetric member into the interior thereof through said outlet orifice, any volume of free gas remaining being no greater than the expansion of said gassy liquid if heated from the closing temperature to 140*F., sealing said orifice against gas and liquid flow, and relieving subsequent liquid expansion pressures within said container at temperatures greater than the closing temperature by admitting a portion of said liquid into the volume originally Occupied by said volumetric member.
Claim 2
Independent Claim 114 words
A method for closing a fragile container having an outlet orifice and mostly filled with a gassy liquid so as to render said filled container non-explosive comprising, displacing at least most free gas from within said container by introducing a volumetric member into the interior thereof through said outlet orifice, any volume of free gas remaining being no greater than the expansion of said gassy liquid if heated from the closing temperature to 140*F., sealing said orifice against gas and liquid flow, and relieving subsequent liquid expansion pressures within said container at temperatures greater than the closing temperature by admitting a portion of said liquid into the volume originally Occupied by said volumetric member.
Claim 3
Dependent Claim 37 words
A method according to claim 1 wherein said subsequent expansion pressures are relieved by compressing said member to a volume less than its original volume, the extent of said compression being a function of said expansion pressure.
Claim 4
Dependent Claim 35 words
A method according to claim 1 wherein said subsequent expansion pressures are relieved by moving a portion of said liquid into the interior of said volumetric member through an opening provided in a wall thereof.
Claim 5
Dependent Claim 26 words
A method according to claim 1 wherein said volumetric member displaces substantially all free gas from within said container when it is introduced into said container.
Claim 6
Independent Claim 81 words
A method of filling an orificed fragile container with a gassy liquid comprising the following steps: (1) putting the gassy liquid into the orificed fragile container until the fragile container is nearly full but less than filled, so that a space filled with free gas exists near the orifice; (2) forcing substantially all of said free gas out of said space by mechanical insertion of a pliant member through said orifice; and (3) closing said orifice against gas and liquid flow.
Claim 7
Independent Claim 81 words
A method of filling an orificed fragile container with a gassy liquid comprising the following steps: (1) putting the gassy liquid into the orificed fragile container until the fragile container is nearly full but less than filled, so that a space filled with free gas exists near the orifice; (2) forcing substantially all of said free gas out of said space by mechanical insertion of a pliant member through said orifice; and (3) closing said orifice against gas and liquid flow.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-05-21 1976-11-20 1977-05-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-05-21 1980-11-20 1981-05-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-05-21 1984-11-20 1985-05-22 $7700.00 Window Closed / Lapsed

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