CN104648830A - Capacity-adjustable multi-function vacuum container - Google Patents

Capacity-adjustable multi-function vacuum container Download PDF

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Publication number
CN104648830A
CN104648830A CN201510065325.2A CN201510065325A CN104648830A CN 104648830 A CN104648830 A CN 104648830A CN 201510065325 A CN201510065325 A CN 201510065325A CN 104648830 A CN104648830 A CN 104648830A
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China
Prior art keywords
bottle
piston
drain pan
cover device
container
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CN201510065325.2A
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Chinese (zh)
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CN104648830B (en
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黄建军
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Individual
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Individual
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Publication of CN104648830B publication Critical patent/CN104648830B/en
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Abstract

The invention relates to a container, in particular to a capacity-adjustable multi-function vacuum container, comprising a bottle body, a bottle cap, a piston, a bottom cover device, a stretching belt and an air cock; the top end and the bottom end of the bottle body are respectively of an opening structure; the bottom cover device covers a bottom end opening of the bottle body and packages the piston in the bottle body, and the bottom cover device is internally provided with a hoisting mechanism; the hoisting mechanism is connected with the piston by the stretching belt; the air cock is arranged on the side wall of the bottom cover device. In this way, the air cock can be used for charging high pressure gas into the space of the bottle body, so that the piston moves upward and exhausts air in the container, residual liquid in the bottle body is isolated from the air and can be stored for a long term, and the problems of deterioration and the like are difficult to generate; when the stretching belt is withdrawn by the hoisting mechanism to enable the piston to move downward, users can add different liquids (such as red wine, beverage and milk) into the container according to actual use conditions or personal preferences, and the repeated utilization of the container is ensured; the container is simple in structure and very high in practical value.

Description

A kind of adjustable capacity multi-functional true empty receptacle
Technical field
The present invention relates to a kind of container, especially a kind of adjustable capacity multi-functional true empty receptacle.
Background technology
As everyone knows, mainly with bottle, title dress is carried out for red wine, white wine, beverage, dairy products or other oxidizable or Strong oxdiative liquid etc., then at bottleneck plug-in mounting bottle stopper or twist solid bottle cap and realize sealing the object of preserving; But, topple over when opening bottle or to extract in bottle after partially liq, when recycling bottle stopper or bottle cap carry out Reseal, will inevitably residual fraction air in bottle, the biochemical reaction of liquid can be caused in air containing various gas and bacterial constituent components, especially to the liquid had compared with strong oxidizing property, thus the liquid in bottle is easily gone bad, even produce objectionable impurities, bring greatly potential threat to health; Meanwhile, once behind bottle Kaifeng, just need to drink or use the liquid in bottle as early as possible, so also shorten the quality guarantee period of liquid.
Therefore, be necessary to propose improvement project, to meet the user demand of people's reality to existing liquid container.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of the present invention is to provide that a kind of structure is simple, feature richness, easy to use, the adjustable capacity multi-functional true empty receptacle that is conducive to extending liquid shelf-life, Be very effective.
To achieve these goals, the present invention adopts following technical scheme:
A kind of adjustable capacity multi-functional true empty receptacle, it comprises:
One bottle, the top of described bottle and bottom are all in hatch frame;
One bottle cap, described bottle cap is covered on the top end opening of bottle;
One piston, described piston is nested in bottle;
One bottom cover device, piston is packaged in bottle by the bottom end opening that described bottom cover device is covered on bottle, is provided with hoisting mechanism in described bottom cover device;
At least one tension belt, the head end of described tension belt is connected on the bottom surface of piston, tail end is connected with hoisting mechanism;
With
At least one valve, described valve is arranged on the sidewall of bottom cover device.
Preferably, be also plugged with bottle stopper in the top end opening of described bottle, described bottle stopper comprises cock body, is arranged at the draw ring on cock body end face and is arranged at the copper and/or silver sanitizer in the bottom center region of cock body.
Preferably, described bottom cover device comprises drain pan, cover plate and crosses bridged ring, the bottom end opening that described cover plate is covered on bottle was positioned at bridged ring, described one end crossing bridged ring is threaded with drain pan, the other end is socketed on bottle, the center of described cover plate offers take-up mouth, the symmetrical sides of described take-up mouth, after downward-extension, is formed with cantilever slab;
Described hoisting mechanism comprises the spool that U-shaped frame and axle are connected in the open end of U-shaped frame, and the root of described U-shaped frame is connected with cantilever slab pivotable, and described spool is connected with the tail end of tension belt and is positioned at the below of cover plate.
Preferably, the end face of described spool offers equilateral polygon through hole.
Preferably, described bottom cover device comprises drain pan, cover plate and crosses bridged ring, the bottom end opening that described cover plate is covered on bottle was positioned at bridged ring, described one end crossing bridged ring is threaded with drain pan, the other end is socketed on bottle, the center of described cover plate offers take-up mouth, the symmetrical sides of described take-up mouth, after downward-extension, is formed with cantilever slab;
Described hoisting mechanism is electric winch, and described electric winch is arranged between two cantilever slabs, and the output shaft of described electric winch is connected with tension belt.
Preferably, in described drain pan, be also provided with a high-pressure pump, the inlet end of described high-pressure pump is connected with valve, exit end is connected with the bottle space be positioned at below piston by take-up mouth.
Preferably, it also comprises master component, described master component comprises drive plate, upper limit position switch and lower position switch, described drive plate is covered in drain pan by cover plate, described upper limit position switch is arranged at the tail end of tension belt and is electrically connected by drive plate and high-pressure pump, and described lower position switch is arranged on the surface of cover plate.
Preferably, read-out, several function keys and at least one USB interface that described master component also comprises the energy-storage battery be arranged in drain pan, the wireless communication module be arranged on drive plate, human body sensing probe and pressure probe and is arranged in base side walls, described energy-storage battery, read-out, function key and USB interface are electrically connected with drive plate respectively;
Described master component also comprises the probe be embedded on bottle madial wall in several ring weeks, and described probe is by being embedded in metal wool in bottle and drive plate is electrically connected.
Preferably, it also comprises and is installed in drain pan and is positioned at the audio player of the below of drive plate, and described audio player comprises loud speaker and isolated plate, and loud speaker is packaged in drain pan by described isolated plate;
The bottom surface of described drain pan shell offers leading note porose area, described isolated plate is provided with an electrode column be connected with drive plate, described loud speaker and electrode column are electrically connected.
Preferably, the top sidewall of described bottle is also provided with a drain valve.
Owing to have employed such scheme, can utilize valve in the space of bottle, be filled with high pressure gas to make piston moves, so that the air in container is discharged, remaining liquid-to-air in bottle is completely cut off, ensures that liquid can be preserved for a long time and not easily occur problems such as going bad; When being reclaimed tension belt by hoisting mechanism and making piston move down, various different liquid (as red wine, beverage, milk etc.) can add in container according to the service condition of reality or personal like by user, ensure that the recycling of container; Its structure is simple, has very strong practical value.
Accompanying drawing explanation
Fig. 1 is the structure cross-sectional schematic with manual hoist structure of the embodiment of the present invention;
Fig. 2 is the mounting structure schematic diagram of the manual hoist structure of the embodiment of the present invention;
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram with the bottom cover device of electric winch structure of the embodiment of the present invention;
Fig. 4 is electric winch structure and the piston annexation schematic diagram of the embodiment of the present invention;
Fig. 5 is the structural representation of the bottle stopper of the embodiment of the present invention;
Fig. 6 is the cross section structure schematic diagram of the audio player of the embodiment of the present invention;
Fig. 7 is the drive plate control principle block diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figures 1 to 7, a kind of adjustable capacity multi-functional true empty receptacle provided by the invention, it comprises:
One bottle 1, its can according to actual design or the condition of production select homogenous material (as corrosion-resistant steel, plastics, timber or glass etc.) or composite material (as by corrosion-resistant steel and timber Overmolded) make, the top of the bottle of the present embodiment and bottom are all in hatch frame;
One bottle cap 2, it is covered on the top end opening of bottle 1;
One piston 3, it is nested in bottle 1;
One bottom cover device 4, piston 3 is packaged in bottle 1 by its bottom end opening being covered on bottle 1, in bottom cover device 4, is provided with hoisting mechanism;
At least one tension belt 5, it can adopt banded structure body or circular wire structure according to actual design or the condition of production, and the head end of tension belt 5 is connected on the bottom surface of piston 3, tail end is connected with hoisting mechanism;
With
At least one valve 6, it is arranged on the sidewall of bottom cover device 4.
The vacuum vessel of the present embodiment can utilize valve 6 to be filled with high pressure gas in the space (confined space namely formed by bottom cover device 4, bottle 1 and piston 3) of bottle 1, piston 3 is made to move relative on bottle 1 under the effect of the pressure, reduce the liquid accommodation space of container, thus the air in this space is discharged, and then utilize remaining liquid in bottle cap 2 pairs of bottles 1 to carry out sealing preservation, and then ensure that liquid can be preserved for a long time and there will not be the problems such as rotten; Simultaneously when the liquid in bottle 1 drains or increases liquid, reclaim tension belt 5, to utilize tension belt 5 to drive piston 3 to move down relative to bottle 1, to increase the accommodation space of liquid by hoisting mechanism.So, various different liquid (as red wine, beverage, milk etc.) can add in container according to the service condition of reality or personal like by user, both ensure that the recycling of container, also need not worry that too fast rotten problem appears in liquid.
For improving the sealing property of container further, simultaneously for the liquid in prevention container occurs rotten, also bottle stopper is plugged with in the top end opening of bottle 1, the bottle stopper of the present embodiment comprises cock body 7, is arranged at the draw ring 8 on the end face of cock body 7 and is arranged at the copper and/or silver sanitizer 9 in the bottom center region of cock body 7, and the sanitizer 9 of the present embodiment can adopt tabular, netted or column construction body according to actual conditions; With this, draw ring 8 can be utilized to be extracted in bottle 1 by bottle stopper, improve the convenience that it uses, sanitizer 9 also can be utilized simultaneously to produce chemical reaction with the contact of liquid, occur with pre-liquidproof rotten.
For simplifying the structure of whole container to greatest extent, ensure the reasonable assembling of relevant components parts, the bottom cover device 4 of the present embodiment adopts cavity box body structure, its concrete shape can conform to the shape of bottle 1 or carry out the selection of shape according to design requirement, the bottom cover device 4 of the present embodiment comprises drain pan 4-1, cover plate 4-2 and excessively bridged ring 4-3, wherein, the bottom end opening that cover plate 4-2 is covered on bottle 1 was positioned at bridged ring 4-3, and the connection mode that one end of mistake bridged ring 4-3 and drain pan 4-1 adopt screw thread to be socketed, the other end is then socketed on bottle 1 and also glue-line can be utilized to bond, so, drain pan 4-1 and cover plate 4-2 and other associated components can be disassembled from bottle 1, meanwhile, offer take-up mouth 4-4 in the center of cover plate 4-2, the symmetrical sides of take-up mouth 4-4, after downward-extension, be formed with cantilever slab 4-5, with the installing utilizing cantilever slab 4-2 to realize hoisting mechanism, utilized bridged ring 4-3 to install valve 6 simultaneously.
The hoisting mechanism of the present embodiment can adopt Manual control structure form (i.e. manual hoist structure), also can adopt electric control structure form (i.e. automatic hoisting mechanism).
Wherein, as illustrated in fig. 1 and 2, Manual control structure form is: hoisting mechanism then comprises the spool 11 that U-shaped frame 10 and axle are connected in the open end of U-shaped frame 10, wherein, the root of U-shaped frame 10 is connected with cantilever slab 4-5 pivotable, and spool 11 is connected with the tail end of tension belt 5 and is positioned at drain pan 4-1.So, whole hoisting mechanism can carry out the adjustment of certain angle relative to cover plate 4-2, ensures that tension belt 5 can be recovered in bottom cover device 4 by complete, realizes the maximize for accommodating liquid in bottle 1; The backrush utilizing spool 11 then can realize tension belt 5 is reclaimed.
For ease of carrying out backrush recovery to tension belt 5, person's operation easy to use, equilateral polygon through hole 11-1 can be offered on the end face of spool 11, so, after drain pan 4-1 is dismantled, external tool can be utilized to carry out rotation process to spool 11, thus realize rolling action, during as equilateral polygon through hole 11-1 employing hexagon, then the instruments such as independent and external inner-hexagon spanner can be utilized to operate.
As shown in Figure 3 and Figure 4, electric control structure is: utilize electric winch 12 to replace the spool 11 in Manual control structure, be installed between two cantilever slab 4-5 by electric winch 12, the output shaft of electric winch 12 is connected with tension belt 5; With this, by the control to electric winch 12, realize the automatic and quantitative backrush of tension belt 5 and reclaim, and then realize automatically moving down of piston 3, avoid the problem that easy production part damages due to manual operation.
The high pressure gas of the present embodiment can utilize external inflation device to be filled with in bottle 1 by valve 6, also the mode of automatic inflating can be adopted, can a high-pressure pump 13 be set in drain pan 4-1, the inlet end of high-pressure pump 13 is connected with valve 6, exit end is connected with the space of the bottle 1 be positioned at below piston 3 by take-up mouth 4-4.So, by the control realization of high-pressure pump 13 to the inflation of bottle 1, realize piston 3 automatic relative to bottle 1 on the effect of moving.
For ensureing that piston 3 is in the range motion limited, avoid the problem occurring position or failsafety, the container of the present embodiment also comprises master component, and master component comprises drive plate 14, upper limit position switch 15 and lower position switch 16; Wherein, drive plate 14 is installed in drain pan 4-1, and upper limit position switch 15 is arranged at the tail end of tension belt 5 and is electrically connected by drive plate 14 and high-pressure pump 13, and lower position switch 16 then can be arranged on the surface of cover plate 4-2.So, when piston 3 moves to the upper limit position of bottle 1, upper limit position switch 15 action that is triggered due to the action of tension belt 5, thus control high-pressure pump 13 by drive plate 14 and stop air feed, ensure that piston 3 or bottle 1 can not damage because of overinflation; And when piston 3 moves to the lower position of bottle 1, then can contact with lower position switch 16, make lower position switch 16 trigger action, so, when hoisting mechanism adopts hand-operated structures (when needing to utilize the external tools such as interior hexagonal to manipulate), lower position switch 16 can be utilized to realize alarm; And when hoisting mechanism adopts full automatic control, then can utilize and control electric winch 12 by drive plate 14 and stop, ensureing that rigid conflict can not occur for piston 3 and bottom cover device.
Further, the function of the whole container of horn of plenty, improve its practical value, read-out 18, several function keys 19 and at least one USB interface 20 that the master component of the present embodiment also comprises the energy-storage battery 17 be arranged in drain pan 4-1, the wireless communication module be arranged on drive plate 14, human body sensing probe and pressure probe (not shown) and was arranged on bridged ring 4-3, energy-storage battery 17, read-out 18, function key 19 and USB interface 20 are electrically connected with drive plate 14 respectively; And be can the information such as Illumination intensity, humiture in Real-time Collection container, can inlay several on the sidewall of bottle 1 has difference in functionality and the probe 21 of ring week distribution, and probe 21 is electrically connected with drive plate 14 by the metal wool 22 be embedded in bottle 1.So, USB interface 20 can be utilized to realize also can realizing the charge function of inner consuming parts the transfer function of related data, as carried out programming to drive plate 14, thus realize the data acquisition of coherent signal and the conversion etc. of correlation function pattern, also can the parts such as memory card slot be set, to enrich the function of container; Utilize read-out 18 can show advertisement, video in real time or realize the display of all multi information such as fluid temperature, capacity, environment illumination intensity by the corresponding probe 21 arranged, utilize function key 19 then can realize the control of the associated components such as such as high-pressure pump 13, electric winch 12, read-out 18 or function is set; Meanwhile, the wireless communication module of the present embodiment can adopt as wireless devices such as 2.4G, infrared, bluetooths according to actual conditions, thus the external smart such as remote controller or mobile phone device can be utilized to control container; Utilize the function probes such as human body sensing probe and pressure probe then can enrich whole container intelligence degree further.
Meanwhile, also can install audio player 23 in drain pan 4-1, as shown in Figure 6, the audio player 23 of the present embodiment comprises loud speaker 23-1 and isolated plate 23-2, and wherein, loud speaker 23-1 is packaged in drain pan 4-1 by isolated plate 23-2; Meanwhile, the bottom surface of drain pan 4-1 offers leading note porose area 23-3, isolated plate 23-2 is provided with an electrode column 23-4 be connected with drive plate 14, and loud speaker 23-1 is then electrically connected with electrode column 23-4; So, whole audio player 23 can be made to carry out being connected with drive plate 14 and be controlled by drive plate 14, by container being made to possess the function of radio player to drive plate 14 optimization, greatly enrich the utility function of container.
In addition, on the top sidewall of bottle 1, the below that is positioned at bottle stopper plug-in position is also provided with drain valve 24, utilizes drain valve 24 can carry out quantitative release to the liquid in bottle 1.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. an adjustable capacity multi-functional true empty receptacle, is characterized in that: it comprises
One bottle, the top of described bottle and bottom are all in hatch frame;
One bottle cap, described bottle cap is covered on the top end opening of bottle;
One piston, described piston is nested in bottle;
One bottom cover device, piston is packaged in bottle by the bottom end opening that described bottom cover device is covered on bottle, is provided with hoisting mechanism in described bottom cover device;
At least one tension belt, the head end of described tension belt is connected on the bottom surface of piston, tail end is connected with hoisting mechanism;
With
At least one valve, described valve is arranged on the sidewall of bottom cover device.
2. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 1, it is characterized in that: be also plugged with bottle stopper in the top end opening of described bottle, described bottle stopper comprises cock body, is arranged at the draw ring on cock body end face and is arranged at the copper and/or silver sanitizer in the bottom center region of cock body.
3. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 2, it is characterized in that: described bottom cover device comprises drain pan, cover plate and crosses bridged ring, the bottom end opening that described cover plate is covered on bottle was positioned at bridged ring, described one end crossing bridged ring is threaded with drain pan, the other end is socketed on bottle, the center of described cover plate offers take-up mouth, the symmetrical sides of described take-up mouth, after downward-extension, is formed with cantilever slab;
Described hoisting mechanism comprises the spool that U-shaped frame and axle are connected in the open end of U-shaped frame, and the root of described U-shaped frame is connected with cantilever slab pivotable, and described spool is connected with the tail end of tension belt and is positioned at the below of cover plate;
Described valve was installed on bridged ring.
4. a kind of adjustable capacity Multifunctional vacuum pump as claimed in claim 3, is characterized in that: the end face of described spool offers equilateral polygon through hole.
5. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 2, it is characterized in that: described bottom cover device comprises drain pan, cover plate and crosses bridged ring, the bottom end opening that described cover plate is covered on bottle was positioned at bridged ring, described one end crossing bridged ring is threaded with drain pan, the other end is socketed on bottle, the center of described cover plate offers take-up mouth, the symmetrical sides of described take-up mouth, after downward-extension, is formed with cantilever slab;
Described hoisting mechanism is electric winch, and described electric winch is arranged between two cantilever slabs, and the output shaft of described electric winch is connected with tension belt.
6. a kind of adjustable capacity multi-functional true empty receptacle according to any one of claim 3-5, it is characterized in that: in described drain pan, be also provided with a high-pressure pump, the inlet end of described high-pressure pump is connected with valve, exit end is connected with the bottle space be positioned at below piston by take-up mouth.
7. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 6, it is characterized in that: it also comprises master component, described master component comprises drive plate, upper limit position switch and lower position switch, described drive plate is installed in drain pan, described upper limit position switch is arranged at the tail end of tension belt and is electrically connected by drive plate and high-pressure pump, and described lower position switch is arranged on the surface of cover plate.
8. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 6, it is characterized in that: read-out, several function keys and at least one USB interface that described master component also comprises the energy-storage battery be arranged in drain pan, the wireless communication module be arranged on drive plate, human body sensing probe and pressure probe and was arranged on the sidewall of bridged ring, described energy-storage battery, read-out, function key and USB interface are electrically connected with drive plate respectively;
Described master component also comprises the probe be embedded on the sidewall of bottle in several ring weeks, and described probe is by being embedded in metal wool in bottle and drive plate is electrically connected.
9. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 8, it is characterized in that: it also comprises and is installed in drain pan and is positioned at the audio player of the below of drive plate, described audio player comprises loud speaker and isolated plate, and loud speaker is packaged in drain pan by described isolated plate;
The bottom surface of described drain pan shell offers leading note porose area, described isolated plate is provided with an electrode column be connected with drive plate, described loud speaker and electrode column are electrically connected.
10. a kind of adjustable capacity multi-functional true empty receptacle as claimed in claim 8, is characterized in that: the top sidewall of described bottle is also provided with a drain valve.
CN201510065325.2A 2015-02-06 2015-02-06 Capacity-adjustable multi-function vacuum container Expired - Fee Related CN104648830B (en)

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Application Number Priority Date Filing Date Title
CN201510065325.2A CN104648830B (en) 2015-02-06 2015-02-06 Capacity-adjustable multi-function vacuum container

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Application Number Priority Date Filing Date Title
CN201510065325.2A CN104648830B (en) 2015-02-06 2015-02-06 Capacity-adjustable multi-function vacuum container

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CN104648830A true CN104648830A (en) 2015-05-27
CN104648830B CN104648830B (en) 2017-02-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340573A (en) * 2018-10-22 2019-02-15 吴登科 A kind of dairy sources conveying device

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US1926399A (en) * 1932-07-18 1933-09-12 Aro Equipment Corp Lubricant reservoir and follower construction
US3613963A (en) * 1968-10-31 1971-10-19 Berkmueller Otto Container for the storage and delivery of a fluid or pasty material
EP0235583A1 (en) * 1986-02-06 1987-09-09 STACOS di Saulle Lorenzo e Pontarollo Luciana S.n.c. Dispenser for fluid products
CN2719762Y (en) * 2004-04-18 2005-08-24 王新疆 Beverage fresh-retaining can
EP1792847A1 (en) * 2005-12-01 2007-06-06 Lindal Ventil GmbH Dispensing system
WO2012168637A1 (en) * 2011-06-07 2012-12-13 Marc Fortunato System for refilling a reuseable container with a liquid contained in this container and which can be expelled by means of a propellant gas
CN204453334U (en) * 2015-02-06 2015-07-08 黄建军 A kind of adjustable capacity multi-functional true empty receptacle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1584863A (en) * 1924-01-28 1926-05-18 Dry Ice Corp Grease gun
US1926399A (en) * 1932-07-18 1933-09-12 Aro Equipment Corp Lubricant reservoir and follower construction
US3613963A (en) * 1968-10-31 1971-10-19 Berkmueller Otto Container for the storage and delivery of a fluid or pasty material
EP0235583A1 (en) * 1986-02-06 1987-09-09 STACOS di Saulle Lorenzo e Pontarollo Luciana S.n.c. Dispenser for fluid products
CN2719762Y (en) * 2004-04-18 2005-08-24 王新疆 Beverage fresh-retaining can
EP1792847A1 (en) * 2005-12-01 2007-06-06 Lindal Ventil GmbH Dispensing system
WO2012168637A1 (en) * 2011-06-07 2012-12-13 Marc Fortunato System for refilling a reuseable container with a liquid contained in this container and which can be expelled by means of a propellant gas
CN204453334U (en) * 2015-02-06 2015-07-08 黄建军 A kind of adjustable capacity multi-functional true empty receptacle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340573A (en) * 2018-10-22 2019-02-15 吴登科 A kind of dairy sources conveying device

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Granted publication date: 20170222