CA2647630A1 - Manual evacuation system - Google Patents

Manual evacuation system Download PDF

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Publication number
CA2647630A1
CA2647630A1 CA002647630A CA2647630A CA2647630A1 CA 2647630 A1 CA2647630 A1 CA 2647630A1 CA 002647630 A CA002647630 A CA 002647630A CA 2647630 A CA2647630 A CA 2647630A CA 2647630 A1 CA2647630 A1 CA 2647630A1
Authority
CA
Canada
Prior art keywords
evacuation
evacuation chamber
suction cup
chamber
flexible suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002647630A
Other languages
French (fr)
Other versions
CA2647630C (en
Inventor
William E. Lebeouf
Raechell Maria Thuot
Leland J. Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SC Johnson Home Storage Inc
Original Assignee
SC Johnson Home Storage Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SC Johnson Home Storage Inc filed Critical SC Johnson Home Storage Inc
Publication of CA2647630A1 publication Critical patent/CA2647630A1/en
Application granted granted Critical
Publication of CA2647630C publication Critical patent/CA2647630C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B33/00—Pumps actuated by muscle power, e.g. for inflating

Abstract

A gastight interface for an evacuation device comprises a flexible suction cup adapted to form a gastight seal with a surface surrounding a valve disposed on a container and extending from an evacuation end of an evacuation chamber. The flexible suction cup has an aperture disposed therethrough for fluid communication with the evacuation chamber. A
plurality of support members extends from the evacuation end of the evacuation chamber to restrict movement of the flexible suction cup between the surface and the evacuation end of the evacuation chamber to allow fluid communication between an interior of the container and the evacuation chamber through the valve when the valve is in an open position while the piston is being reciprocated between the closed end and the evacuation end.
Each support member has a distal surface disposed outside of an outer perimeter of the flexible suction cup.

Claims (20)

1. A pump for evacuating gases, including air, from a container, comprising:
an evacuation chamber having a closed end and an evacuation end;
a piston slidably disposed within the evacuation chamber and attached to a first end of a piston rod, the piston rod extending through an opening in the closed end of the evacuation chamber and a handle attached to a second end of the piston rod;
a check valve disposed on the piston to allow gas to flow past the piston when the piston is reciprocated toward the evacuation end of the evacuation chamber;
a flexible suction cup adapted to form an gastight seal with a surface and extending from the evacuation end of the evacuation chamber, the flexible suction cup having an aperture disposed therethrough for fluid communication with the evacuation chamber; and a plurality of support members extending from the evacuation end of the evacuation chamber to restrict movement of the flexible suction cup between the surface and the evacuation end of the evacuation chamber to prevent a portion of the suction cup from collapsing onto the surface while still maintaining an gastight seal with the surface, each support member having a distal surface disposed outside of an outer perimeter of the flexible suction cup.
2. The pump of claim 1, wherein the check valve comprises a peripheral check valve.
3. The pump of claim 2, wherein the peripheral check valve comprises a sealing ring slidably disposed in a groove disposed centrally on a periphery of the piston, and a region of relief disposed on an internal peripheral edge of the piston, the region of relief having a base surface that has a smaller radius with respect to a center of the piston than a base surface of the groove.
4. The pump of claim 1, wherein the plurality of support members comprises three support members that extend from the evacuation end of the evacuation chamber.
5. The pump of claim 1, wherein a restraint button extends from an inner surface of the flexible suction cup.
6. The pump of claim 1, wherein the closed end of the evacuation chamber is formed by a cap that attaches by a bayonet socket to the evacuation chamber at the closed end.
7. The pump of claim 1, wherein the plurality of support members are adjustably attached to the evacuation chamber so as to allow the plurality of support members to be adjusted relative to the evacuation chamber and move the distal surfaces thereof toward or away from the evacuation end.
8. The pump of claim 7, wherein the plurality of support members are adjustably attached to the evacuation chamber by a threaded attachment.
9. The pump of claim 7, wherein the plurality of support members are adjustably attached to the evacuation chamber by a bayonet socket attachment.
10. The pump of claim 1, wherein the outer perimeter of the flexible suction cup is substantially circular in shape.
11. An evacuation system, comprising:
a one-way valve disposed on a container; and a pump for evacuating the container and including an evacuation chamber having a closed end and an evacuation end;
a piston slidably disposed within the evacuation chamber and attached to a first end of a piston rod, the piston rod extending through an opening in the closed end of the evacuation chamber and a handle attached to a second end of the piston rod;
a check valve disposed on the piston to allow gas to flow past the piston when the piston is reciprocated toward the evacuation end of the evacuation chamber;
a flexible suction cup adapted to form an gastight seal with a surface of the container surrounding the one-way valve and extending from the evacuation end of the evacuation chamber, the flexible suction cup having an aperture disposed therethrough for fluid communication with the evacuation chamber; and a plurality of support members extending from the evacuation end of the evacuation chamber to restrict movement of the flexible suction cup between the surface and the evacuation end of the evacuation chamber to allow fluid communication between an interior of the container and the evacuation chamber through the one-way valve when the one-way valve is in an open position while the piston is being reciprocated from the evacuation end toward the closed end, each support member having a distal surface disposed outside of an outer perimeter of the flexible suction cup.
12. The evacuation system of claim 11, wherein the container is a hardwalled container.
13. The evacuation system of claim 11, wherein the container is a thermoplastic pouch.
14. The evacuation system of claim 13, wherein the pouch includes first and second sidewalls and at least one of the first and second sidewalls is embossed or textured to define flow channels that provide fluid communication between the first one-way valve and a region of the interior of the pouch.
15. The evacuation system of claim 11, wherein the first one-way valve is an offset aperture valve.
16. The evacuation system of claim 11, wherein the first one-way valve is a flat film valve.
17. A gastight interface for an evacuation device, comprising:
a flexible suction cup adapted to form an gastight seal with a surface surrounding a valve disposed on a container and extending from an evacuation end of an evacuation chamber, the flexible suction cup having an aperture disposed therethrough for fluid communication with the evacuation chamber; and a plurality of support members extending from the evacuation end of the evacuation chamber to restrict movement of the flexible suction cup between the surface and the evacuation end of the evacuation chamber to allow fluid communication between an interior of the container and the evacuation chamber through the valve when the valve is in an open position while the piston is being reciprocated from the evacuation end toward the closed end, each support member having a distal surface disposed outside of an outer perimeter of the flexible suction cup.
18. The gastight interface of claim 17, wherein a plurality of restraint buttons extend from an inner surface of the flexible suction cup.
19. The gastight interface of claim 17, wherein the plurality of support members are adjustably attached to the evacuation chamber so as to allow the plurality of support members to be adjusted relative to the evacuation chamber and move the distal surfaces thereof toward or away from the evacuation end.
20. The gastight interface of claim 17, wherein the outer perimeter of the flexible suction cup is substantially circular in shape.
CA2647630A 2008-01-09 2008-12-19 Manual evacuation system Active CA2647630C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/008/164 2008-01-09
US12/008,164 US8192182B2 (en) 2008-01-09 2008-01-09 Manual evacuation system

Publications (2)

Publication Number Publication Date
CA2647630A1 true CA2647630A1 (en) 2009-07-09
CA2647630C CA2647630C (en) 2011-07-12

Family

ID=40844719

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2647630A Active CA2647630C (en) 2008-01-09 2008-12-19 Manual evacuation system

Country Status (2)

Country Link
US (1) US8192182B2 (en)
CA (1) CA2647630C (en)

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CN103977849B (en) * 2014-04-24 2015-07-01 张素平 Load-membrane blowing bottle

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US20090175747A1 (en) 2009-07-09
CA2647630C (en) 2011-07-12

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