OA12618A

OA12618A - Pressurized piston pusher.

Info

Publication number: OA12618A
Application number: OA1200300316A
Authority: OA
Inventors: Garry Tsaur
Original assignee: Garry Tsaur
Priority date: 2002-03-21
Filing date: 2002-03-21
Publication date: 2006-06-12

Description

0/26/8

PCT INTERNATIONAL PATENT APPLICATION OFGARRY TSAUR FOR PRESSURIZED PISTON PUSHER

BACKGROÜND-FIIELD OF INVENTION

The présent invention relates to a pressurized piston pusherfor extracting and controlling the rate of flow of viscous fluidsfrom a container.

BACKGROUND-DESCRIPTION OF RELATED ART

Containers that enclose viscous fluids to be stored andtransported must be leak-proof and yet must open easily for accessto its content. When the containers are opened for access to theircontents, there is no control over the rate of the extraction of theviscous fluid from the containers. There is no economical andaccurate method of presetting the rate of extraction of the viscousfluid from the containers.

SUMMARY OF THE INVENTION

The présent invention is a pressurized piston pusher that willControls the rate of flow of viscous fluid from the container afteropening. The présent invention allows the rate of flow of theviscous fluid from the container to be predetermined andcontrolled economically and accurately.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows the pressurized piston pusher 7 inserted in one 1

θΐ 26 7 S end 4 of the container containing the viscous fluid 2 that can beopened at the predetermined location 6 near the other end 5 of thecontainer.

Figure 2 shows the pressurized piston pushers 12, 13 insertedin both ends 4, 5 of the container that can be opened at thepredetermined location near the center 14 of the container.

DETAILED DESCRIPTION OF THE PREFERREDEMBODIMENT

Figure 1 shows the preferred embodiment of the pressurizedpiston pusher 7. A pressurized piston pusher 7 is inserted in oneend 4 of a long slender cylindrical container that can be opened atthe predetermined location 6 near the other end 5 with the viscousfluid 2. The container is partially filled with the desired viscousfluid 2 such as grease, gel, or médications with high viscosity. Thepressurized piston pusher 7 is inserted at one end 4 of thecontainer enclosing the viscous fluid 2 separated from the viscousfluid 2 by a seal 1 of a high viscosity fluid that will not mix withor dissolve in the viscous fluid 2. A predetermined air enclosure 3is maintained near the end 4 of the container separated from theviscous fluid 2 by the pressurized piston pusher 7 and the seal 1.

The container is sealed in an environment with above normal air pressure which will create a pressurized air enclosure 3. The viscous fluid 2 is incompressible. The air in the air chamber 3 will be pressurized to the same pressure as the pressurized environment 2 012618 it was sealed in. The pressurized piston pusher 7 and the seal 1will maintain the séparation of the air enclosure 3 and the viscousfluid 2. The container is sealed on both ends 4, 5 so that noleakage of the viscous fluid 2 is possible. The container can breakopen at predetermined location 6 in the viscous fluid 2 portion ofthe container by scoring the outside perimeter of the container atthe predetermined location 6.

When the viscous fluid 2 is to be release from the container, itis broken open at the predetermined location 6 determined by thescorings on the container. Once the container is opened, theviscous fluid 2 will be forced out of the container by the airpressure in the air enclosure 3 acting against the pressurizedpiston pusher 7 which in turn acts against the seal 1 at a ratedetermined by the viscosity and the length of the seal 1. A higherviscosity and/or longer seal 1 will allow the viscous fluid 2 toflow out of the container after a predetermined delay and at a slowcontrolled speed. A lower viscosity and /or shorter seal 1 willallow the viscous fluid 2 to flow out of the container almostimmediately and at a rapid speed. The amount of viscous fluid 2 tobe release can be determined by breaking the end 5 of thecontainer containing the viscous fluid 2 at predetermined location 6. The end 5 containing the viscous fluid 2 that breaks off fromthe container will retain the viscous fluid 2 within it since it is sealed on one end 5 and atmospheric air pressure will prevent theviscous fluid 2 contained within it from being released.

Figure 2 shows another embodiment of the pressurized piston 3 0126 18 pusher 12, 13. A pressurized piston pusher 12, 13 is inserted ineach end 4, 5 of a container that can be opened at a predeterminedlocation near the center 14 of the container. The container ispartially filled with the desired viscous fluid 2 such as grease, gel,or viscous médications. The two pressurized piston pusher 12, 13are inserted at both ends 4, 5 of the container enclosing theviscous fluid 2. a predetermined air enclosure 9, 10 is maintainedon both ends 4, 5 of the container separated from the viscous fluid2 by the pressurized piston pusher 12, 13 and the seals 1, 11. Thecontainer is sealed on both ends 4, 5 so that no leakage of theviscous fluid 2 is possible. The container can break open at thepredetermined location 14 at the scoring placed near the center ofthe container at the outside perimeter of the container.

The container is sealed in an environment with above normalair pressure which will create pressurized air enclosures 9, 10. Theviscous fluid 2 is incompressible. The air in the air enclosures 9,10 will be pressurized to the same pressure as the pressurizedenvironment it was sealed in. Since there are air enclosures 9, 10in both ends 4, 5 of the container, the viscous fluid 2 willmaintain its position in the middle of the container. Thepressurized piston pushers 12, 13 and the seals 1,11 will maintainthe séparation of the air enclosure 9, 10 and the viscous fluid 2.

When the viscous fluid 2 is to be release from the container, the container may be broken open at the predetermined location near the center 14 of the container. Once the container is open, the air pressure in the air enclosure 9, 10 will force the viscous fluid 4 012618 2 out of the container at a predetermined rate after apredetermined delay. The viscous fluid 2 will flow out of thecontainer at a rate determined by the viscosity and the length ofthe seals 1, 11. A higher viscosity and/or longer seal 1, 11 will 5 allow the viscous fluid 2 to flow out of the container after apredetermined delay and at a slow controlled speed. A lowerviscosity and/or shorter seal 1,11 will allow the viscous fluid 2 toflow out of the container almost immediately and at a rapid speed.

The container may hâve one or more protrusions 8, 15 in its 10 interior surface near the predetermined location 6, 14 such thatafter the viscous fluid 2 is released from the container, thepressurized piston pusher 7, 12, 13 is retained in the container andnot ejected. The container may also hâve one or more indentationsfrom its outside walls which will create the protrusions 8, 15 in its 15 interior surface to achieve the same resuit. 5

Claims

0 7 26 ίβ What is claimed is :

1. A pressurized piston pusher comprising: a housing with scoring at one or more predeterminedlocations and with two ends that are sealed to prevent leakage ofviscous fluids contained within it and maintains a pressurized airenclosure; a seal comprising of a viscous substance inserted in thehousing separating the viscous fluid from the air thereby creatingan pressurized air enclosure; a pressurized piston pusher comprising of piston with across-sectional profile that is approximately that of the internaicross-sectional profile of the housing; wherein the pressurized air enclosure will urge thepressurized piston pusher the force the viscous fluid out of thecontainer when the container is opened at the scoring at one ormore predetermined locations.
2. A pressurized piston pusher as in claim 1, wherein twopressurized piston pushers are inserted at either end of the housingseparating the fluid contained in the housing from pressurized airenclosures at either end of the housing.
3. A pressurized piston pusher as in claim 1, wherein thehousing has an internai and an external surface and wherein theinternai surface has one or more protrusion near the scoring at oneor more predetermined locations to retain the pressurized pistonpusher after the viscous fluids are forced out of the housing. 6 012618
4. A pressurized piston pusher as in claim 2, wherein thehousing has an internai and an external surface and wherein theinternai surface has one or more protrusion near the scoring at oneor more predetermined locations to retain the pressurized pistonpusher after the viscous fluids are forced out of the housing.
5. A pressurized piston pusher as in claim 1, wherein thehousing has an internai and an external surface and wherein theexternal surface has one or more indentation that deforms theinternai surface near the scoring at one or more predeterminedlocations to retain the pressurized piston pusher after the viscousfluids are forced out of the housing.
6. A pressurized piston pusher as in claim 2, wherein thehousing has an internai and an external surface and wherein theexternal surface has one or more indentation that deforms theinternai surface near the scoring at one or more predeterminedlocations to retain the pressurized piston pusher after the viscousfluids are forced out of the housing.
7. A pressurized piston pusher comprising: a housing with scoring at one or more predeterminedlocations and with two ends that are sealed to prevent leakage ofviscous fluids contained within it and maintains a pressurized airenclosure; a seal comprising of a viscous substance inserted in thehousing separating the viscous fluid from the air thereby creatingan pressurized air enclosure; a pressurized piston pusher comprising of a piston made with 7 012618 a rigid material with a cross-sectional profile that is slightlysmaller than the of the internai cross-sectional profile of thehousing; wherein the pressurized air enclosure will urge thepressurized piston pusher to force the viscous fluid out of thecontainer when the container is opened at the scoring at one ormore predetermined locations.
8. A pressurized piston pusher as in claim 7, wherein twopressurized piston pushers are inserted at either end of the housingseparating the fluid contained in the housing from pressurized airenclosures at either end of the housing.
9. A pressurized piston pusher as in claim 7, wherein thehousing has an internai and an external surface and wherein theinternai surface has one or more protrusion near the scoring at oneor more predetermined locations to retain the pressurized pistonpusher after the viscous fluids are forced out of the housing.
10. A pressurized piston pusher as in claim 8, wherein thehousing has an internai and an external surface and wherein theinternai surface has one or more protrusion near the scoring at oneor more predetermined locations to retain the pressurized pistonpusher after the viscous fluids are forced out of the hosing.
11. A pressurized piston pusher as in claim 7, wherein thehousing has an internai and an external surface and wherein theexternal surface has one or more indentation that deforms theinternai surface near the scoring at one or more predeterminedlocations to retain the pressurized piston pusher after the viscous 8 0126 18 fluids are forced out of the housing.
12.A pressurized piston pusher as in claim 8, wherein the housing has an internai and an external surface and wherein theexternal surface has one or more indentation that deforms the 5 internai surface near the scoring at one or more predeterminedlocations to retain the pressurized piston pusher after the viscousfluids are forced out of the housing. 9