US20040256021A1 - High efficiency vacuum box with indicators - Google Patents
High efficiency vacuum box with indicators Download PDFInfo
- Publication number
- US20040256021A1 US20040256021A1 US10/601,293 US60129303A US2004256021A1 US 20040256021 A1 US20040256021 A1 US 20040256021A1 US 60129303 A US60129303 A US 60129303A US 2004256021 A1 US2004256021 A1 US 2004256021A1
- Authority
- US
- United States
- Prior art keywords
- pressure
- isolating layer
- button
- upper cover
- pressure relief
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
- B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
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- 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
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- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
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- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
Definitions
- the present invention relates to vacuum boxes, and particularly to a vacuum box with an indicator and an effective pumping system so as to retain the vacuum level of the box.
- the primary object of the present invention is to provide a vacuum box which comprises a lower box; an upper cover; an isolating layer; a pump unit; a motor; a battery set; a control button.
- the isolating layer is installed with a pressure display unit.
- the pressure display unit is formed by a pressure button installed in a pressure hole of the isolating layer by an airtight ring, a spring below the pressure button.
- a sealed airbag installed at a top cover of the pressure button and a periphery of the spring; and a display mask connected to the pressure button.
- the display mask is pivotally installed to ears of the isolating layer; a top of the display mask is mounted with at least two color indicators.
- the pressure button is installed with a sensing switch which senses the rising or descending of the pressure button.
- FIG. 1 is a perspective view of the present invention.
- FIG. 3 is an elevational view of the isolating layer of the present invention.
- FIGS. 4 and 5 are schematic view showing the electromotive pumping in the present invention.
- FIG. 7 is a cross section view along line 7 - 7 of FIG. 1.
- FIG. 8 is a schematic view showing the pressure indicator of the vacuum box of the present invention.
- FIG. 9 is a cross section view along line 9 - 9 of FIG. 1.
- FIG. 10 is a schematic view showing the pressure relief of the vacuum box of the present invention.
- FIG. 11 is a cross section view showing that the pressure indicator of the present invention shows a normal pressure.
- FIG. 12 is a cross section view showing that the pressure indicator of the present invention shows a negative pressure.
- FIG. 2 is a schematic view along line 2 - 2 of FIG. 1.
- the vacuum box includes a lower box 10 , an isolating layer 20 , an upper cover 30 , etc.
- the isolating layer 20 is at a bottom of the upper cover 30 for sealing the lower box 10 .
- the isolating layer 20 is installed with a check valve 21 and a pressure relief valve 24 , as shown in FIGS. 4 and 9.
- the isolating layer 20 is installed with a pump unit 40 , a pressure display unit 50 , a sensing switch 60 , a pressure relief device 70 , and a time indicator 80 .
- the pump unit 40 is formed by two pump tubes 41 , two unidirectional ventilation studs 42 in the two pump tubes 41 , a gear set aside the two studs 42 , a motor 46 on the isolating layer 20 for driving the gear set, a battery set 47 on the isolating layer 20 for supplying power to the motor 47 , and a control button 48 on the upper cover 30 for controlling the power of the box.
- the gear set 43 is formed by a driven gear 43 , a driving gear 44 engaged to the driven gear 43 , and a worm rod 45 engaged to the driving gear 44 .
- the worm rod 46 is driven by the motor 46 .
- a lower end of the pump tube 41 is tightly connected to the check valve 21 of the isolating layer 20 .
- the motor 46 actuates the gear set to rotate and the post 431 of the driving gear 43 rotates. Since the post 431 is confined in a long groove of a crossing rod 420 connected to a rear end of the studs 42 , when the post 431 rotates, the crossing rod 420 moves reciprocally. Thereby, the two studs 42 cause the pump tubes 41 to pump air unidirectionally. When the studs 42 moves forwards, air in the pump tubes 41 is sealed by the check valve 21 and thus cannot drain into the lower box 10 . Thus air will be vented out from the edges of vent washers 421 .
- the pressure display unit 50 is installed in the isolating layer 20 .
- the isolating layer 20 is formed by a pressure button 51 , an airtight ring 52 , a spring 53 , and a display mask 54 .
- a lateral side of the pressure mask 51 has a T shape and is slidably installed in a pressure hole 22 of the isolating layer 20 by an airtight ring 52 (for example, an O ring).
- the spring 53 resists against a lower edge of the pressure button 51 and an outer edge of the pressure hole 22 .
- a lower end of the display mask 54 is pivotally connected to an ear 23 .
- One side of the display mask 54 is extended with a post 540 which is connected to the pressure button 51 .
- the display mask 54 is a sector transparent cover and a top thereof has two color indicators 541 and 542 of different colors (for example, rod color and blue color).
- pressure scales can be formed thereon.
- the pressure button 51 When the pressure of the lower box 10 reduces, the pressure button 51 will sink downwards due to the absorption of negative pressure.
- the display mask 54 rotates, as shown in FIG. 8. Then the color indicators 541 and 542 of the display mask 54 rotate so that the display color is red instead of the original blue color (red color represents a normal pressure and blue color represents negative pressure). The user can view the color from a viewing hole 31 in the upper cover 30 so as to know the pressure of the lower box 10 .
- the sensing switch 60 is installed at a lower lateral side of the pressure button 51 .
- the control button 48 of the upper cover 30 When the control button 48 of the upper cover 30 is pressed (ON), the circuit in the lower box 10 is conductive. If the lower box 10 is in normal pressure, the motor 46 will actuate immediately so that the pump unit 40 pumps air. Therefore the negative pressure of the lower box 10 increases gradually and the pressure button sinks until the sensing switch 60 is touched. Then the sensing switch 60 will interrupt the operation of the motor 46 . At this time, the lower box 10 is vacuumed so as to prevent the motor 46 from idly rotation or prevent a large pressure difference between the outer side and inner side of the lower box 10 so that the lower box 10 deforms.
- the motor 46 will be actuated so that the pump tubes 41 pump air until the lower box 10 is vacuumed. Then the motor 46 is stopped. Therefore, the lower box 10 is in negative pressure to avoid to lose of pressure to deteriorate the objects in the box.
- the control button 48 is at an off state, no electric power is conducted to the box 10 and thus the lower box 10 lose of pressure, The motor 46 can be actuated by the sensing switch 60 . However only the control button 48 is at ON state, the sensing switch 60 will actuate the motor 46 .
- the pressure relief device 70 is formed by a pressure relief button 71 , an airtight ring 72 , and a spring 73 .
- the air tight ring 72 encloses a lower edge of the pressure relief button 71 .
- An upper edge of the airtight ring 72 resists against the opening of the pressure relief hole 24 of the isolating layer 20 .
- the spring 73 resists against the opening of the pressure relief hole 24 and the pressure relief button 71 .
- a top of the pressure relief button 71 exposes from the top of the upper cover 30 so that an operator can manually operated the button.
- the corners of the upper cover 30 and isolating layer 20 are formed with a rotational time indicator 80 (being a round button). Only a part of the time indicator 80 protrudes out of the edge of the upper cover 30 . The exposed portion of the time indicator 80 indicates time and date. When a plurality of vacuum boxes are placed one over another. The time indicators are used to indicate time. Moreover, a T shape elastic positioning sheet 81 is fixed to the groove 82 of the isolating layer 20 . The positioning sheet 81 has a front post which is inserted into the ratchet of the indicator so as to fix the indication of the time indicator.
- FIG. 11 another structure of the pressure indicator 50 according to the present invention is illustrated.
- the difference of this example different from the previous one is that an airbag 55 encloses a pressure button 51 and a spring 53 .
- the airbag 55 is a rubber snake-like tube. A top thereof is tightly connected below the top cover 511 of the pressure button 51 . A lower end thereof surrounds the periphery of the pressure hole 22 and are tightened by an elastic ring 56 . Thereby, the airbag 55 is tightly sealed and is positioned firmly.
- the use of the spring 53 is to cause that the airbag 55 can rise rapidly. Since no air tight ring 52 in the pressure hole 22 , the airbag 55 will rise and descend due to the negative pressure of the box 10 . When the pressure of the box 10 is negative, the airbag 55 descends wit the pressure button 51 , as shown in FIG. 12. On the contrary, when the box 10 is in normal pressure, the airbag 55 rises with the pressure button 51 , as shown in FIG. 11.
- LEDs 56 can be installed to the display mask 54 .
- the LEDs are arranged below the display mask 54 , two ears 23 are necessary, which are arranged at two sides. Furthermore, the LEDs lights up, when the box 10 is in normal pressure. In vacuum, the sensing switch 60 interrupts and no light is emitted.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A vacuum box comprises a lower box; an upper cover; an isolating layer; a pump unit; a motor; a battery; a control button. The isolating layer is installed with a pressure display unit. The pressure display unit is formed by a pressure button installed in a pressure hole of the isolating layer by an airtight ring, and a spring below the pressure button. A sealed airbag installed at a top cover of the pressure button and a periphery of the spring; and a display mask connected to the pressure button. The display mask is pivotally installed to ears of the isolating layer; a top of the display mask is mounted with at least two color indicators. The pressure button is installed with a sensing switch which sense the rising or descending of the pressure button.
Description
- The present invention relates to vacuum boxes, and particularly to a vacuum box with an indicator and an effective pumping system so as to retain the vacuum level of the box.
- In the prior art vacuum box, the vacuum is retained manually and the vacuum level of the box can not be viewed in advance. The vacuum pump is actuated manually, but it can not stop automatically so that it is often that the vacuum level in the box is too low so as to deform the box. Thereby, the user must stop the motor manually and thus the user must take care of the vacuum level of the box. Moreover, users can not know the pressure and conditions of the box so that the vacuum level can not monitor by the user. This induce inconvenience to the users.
- Accordingly, the primary object of the present invention is to provide a vacuum box which comprises a lower box; an upper cover; an isolating layer; a pump unit; a motor; a battery set; a control button. The isolating layer is installed with a pressure display unit. The pressure display unit is formed by a pressure button installed in a pressure hole of the isolating layer by an airtight ring, a spring below the pressure button. A sealed airbag installed at a top cover of the pressure button and a periphery of the spring; and a display mask connected to the pressure button. The display mask is pivotally installed to ears of the isolating layer; a top of the display mask is mounted with at least two color indicators. The pressure button is installed with a sensing switch which senses the rising or descending of the pressure button.
- The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.
- FIG. 1 is a perspective view of the present invention.
- FIG. 2 is a cross section view along line2-2 of FIG. 1.
- FIG. 3 is an elevational view of the isolating layer of the present invention.
- FIGS. 4 and 5 are schematic view showing the electromotive pumping in the present invention.
- FIG. 6 is a schematic view showing the manual pumping in the present invention.
- FIG. 7 is a cross section view along line7-7 of FIG. 1.
- FIG. 8 is a schematic view showing the pressure indicator of the vacuum box of the present invention.
- FIG. 9 is a cross section view along line9-9 of FIG. 1.
- FIG. 10 is a schematic view showing the pressure relief of the vacuum box of the present invention.
- FIG. 11 is a cross section view showing that the pressure indicator of the present invention shows a normal pressure.
- FIG. 12 is a cross section view showing that the pressure indicator of the present invention shows a negative pressure.
- Referring to FIG. 1, the vacuum box of the present invention is illustrated. FIG. 2 is a schematic view along line2-2 of FIG. 1. In the present invention, the vacuum box includes a
lower box 10, anisolating layer 20, anupper cover 30, etc. The isolatinglayer 20 is at a bottom of theupper cover 30 for sealing thelower box 10. Theisolating layer 20 is installed with acheck valve 21 and apressure relief valve 24, as shown in FIGS. 4 and 9. - Referring to FIG. 3, the
isolating layer 20 is installed with apump unit 40, apressure display unit 50, asensing switch 60, apressure relief device 70, and atime indicator 80. Thepump unit 40 is formed by twopump tubes 41, twounidirectional ventilation studs 42 in the twopump tubes 41, a gear set aside the twostuds 42, amotor 46 on the isolatinglayer 20 for driving the gear set, abattery set 47 on the isolatinglayer 20 for supplying power to themotor 47, and acontrol button 48 on theupper cover 30 for controlling the power of the box. Thegear set 43 is formed by a drivengear 43, adriving gear 44 engaged to the drivengear 43, and aworm rod 45 engaged to thedriving gear 44. Theworm rod 46 is driven by themotor 46. - Referring to FIG. 4, a lower end of the
pump tube 41 is tightly connected to thecheck valve 21 of theisolating layer 20. When power is conducted, themotor 46 actuates the gear set to rotate and thepost 431 of thedriving gear 43 rotates. Since thepost 431 is confined in a long groove of acrossing rod 420 connected to a rear end of thestuds 42, when thepost 431 rotates, thecrossing rod 420 moves reciprocally. Thereby, the twostuds 42 cause thepump tubes 41 to pump air unidirectionally. When thestuds 42 moves forwards, air in thepump tubes 41 is sealed by thecheck valve 21 and thus cannot drain into thelower box 10. Thus air will be vented out from the edges ofvent washers 421. - Referring to FIG. 5, when the
studs 42 move backward, thewashers 421 will tightly seal to thepump tubes 41 and then move backwards so that the air at the back side of thepump tubes 41 are vented out and the pressures in front of thepump tubes 41 are negative. Since at this moment, the pressures of thepump tubes 41 are negative, air in thelower box 10 will be pumped into thepump tubes 41 from thecheck valve 21, and then by the continuous operation of themotor 46 and the gear set, as shown in FIGS. 4 and 5, air in thelower box 10 can be pumped out rapidly so that object in thelower box 10 can retain in fresh state. - With reference to FIG. 6, a
stick 49 passes through a throughhole 32 at theupper cover 30 and then is connected to a shaft of thedriving gear 44. By rotating thestick 49, thepump unit 40 pumps air. However this is not the feature of the present invention and thus the details will not be described here. In the present invention, when themotor 46 is not used, the present invention can be operated manually. - Referring to FIG. 7, the
pressure display unit 50 is installed in theisolating layer 20. The isolatinglayer 20 is formed by apressure button 51, anairtight ring 52, aspring 53, and adisplay mask 54. A lateral side of thepressure mask 51 has a T shape and is slidably installed in apressure hole 22 of the isolatinglayer 20 by an airtight ring 52 (for example, an O ring). Thespring 53 resists against a lower edge of thepressure button 51 and an outer edge of thepressure hole 22. A lower end of thedisplay mask 54 is pivotally connected to anear 23. One side of thedisplay mask 54 is extended with apost 540 which is connected to thepressure button 51. Besides, thedisplay mask 54 is a sector transparent cover and a top thereof has twocolor indicators - When the pressure of the
lower box 10 reduces, thepressure button 51 will sink downwards due to the absorption of negative pressure. At this time when thepost 540 is pressed downwards, thedisplay mask 54 rotates, as shown in FIG. 8. Then thecolor indicators display mask 54 rotate so that the display color is red instead of the original blue color (red color represents a normal pressure and blue color represents negative pressure). The user can view the color from aviewing hole 31 in theupper cover 30 so as to know the pressure of thelower box 10. - Furthermore, the
sensing switch 60 is installed at a lower lateral side of thepressure button 51. When thecontrol button 48 of theupper cover 30 is pressed (ON), the circuit in thelower box 10 is conductive. If thelower box 10 is in normal pressure, themotor 46 will actuate immediately so that thepump unit 40 pumps air. Therefore the negative pressure of thelower box 10 increases gradually and the pressure button sinks until thesensing switch 60 is touched. Then thesensing switch 60 will interrupt the operation of themotor 46. At this time, thelower box 10 is vacuumed so as to prevent themotor 46 from idly rotation or prevent a large pressure difference between the outer side and inner side of thelower box 10 so that thelower box 10 deforms. - Since the
control button 48 is pressed (ON), thelower box 10 is retained in conduction, while after long using time, the vacuumlower box 100 of the present invention will lose of pressure. Then the negative pressure in thelower box 10 will reduce so that thepressure button 51 will restore due to the resilient force of thespring 53. The sending sheet of thesensing switch 60 will resilient and thedisplay mask 54 will rotate reversely. The color indicator is changed tored color indicator 541 from theblue color indicator 542 until thepressure button 51 rises to the top and thedisplay mask 54 will rotate to an extreme. This is shown that the pressure in thelower box 10 is approach to a normal pressure (i.e., the negative pressure is very small or is zero). At this time, since the sensing sheet of thesensing switch 60 has risen to the top, themotor 46 will be actuated so that thepump tubes 41 pump air until thelower box 10 is vacuumed. Then themotor 46 is stopped. Therefore, thelower box 10 is in negative pressure to avoid to lose of pressure to deteriorate the objects in the box. When thecontrol button 48 is at an off state, no electric power is conducted to thebox 10 and thus thelower box 10 lose of pressure, Themotor 46 can be actuated by thesensing switch 60. However only thecontrol button 48 is at ON state, thesensing switch 60 will actuate themotor 46. - Referring to FIG. 9, the
pressure relief device 70 is formed by apressure relief button 71, anairtight ring 72, and aspring 73. The airtight ring 72 encloses a lower edge of thepressure relief button 71. An upper edge of theairtight ring 72 resists against the opening of thepressure relief hole 24 of the isolatinglayer 20. Thespring 73 resists against the opening of thepressure relief hole 24 and thepressure relief button 71. A top of thepressure relief button 71 exposes from the top of theupper cover 30 so that an operator can manually operated the button. - With reference to FIG. 10, when the
pressure relief button 71 is pressed, theairtight ring 72 will separate from thepressure relief hole 24 so that air can flow into thebox 10 of thepressure relief button 24. As a result, the external and internal pressures are balanced so that the negative pressure in thebox 10 is released. Then the isolatinglayer 20 combined to theupper cover 30 can not separates from thebox 10. - Besides, referring to FIGS. 1 and 3, the corners of the
upper cover 30 and isolatinglayer 20 are formed with a rotational time indicator 80 (being a round button). Only a part of thetime indicator 80 protrudes out of the edge of theupper cover 30. The exposed portion of thetime indicator 80 indicates time and date. When a plurality of vacuum boxes are placed one over another. The time indicators are used to indicate time. Moreover, a T shapeelastic positioning sheet 81 is fixed to thegroove 82 of the isolatinglayer 20. Thepositioning sheet 81 has a front post which is inserted into the ratchet of the indicator so as to fix the indication of the time indicator. - Referring to FIG. 11, another structure of the
pressure indicator 50 according to the present invention is illustrated. The difference of this example different from the previous one is that anairbag 55 encloses apressure button 51 and aspring 53. Theairbag 55 is a rubber snake-like tube. A top thereof is tightly connected below thetop cover 511 of thepressure button 51. A lower end thereof surrounds the periphery of thepressure hole 22 and are tightened by anelastic ring 56. Thereby, theairbag 55 is tightly sealed and is positioned firmly. The use of thespring 53 is to cause that theairbag 55 can rise rapidly. Since no airtight ring 52 in thepressure hole 22, theairbag 55 will rise and descend due to the negative pressure of thebox 10. When the pressure of thebox 10 is negative, theairbag 55 descends wit thepressure button 51, as shown in FIG. 12. On the contrary, when thebox 10 is in normal pressure, theairbag 55 rises with thepressure button 51, as shown in FIG. 11. - Furthermore, to see the color indicator,
LEDs 56 can be installed to thedisplay mask 54. When the LEDs are arranged below thedisplay mask 54, twoears 23 are necessary, which are arranged at two sides. Furthermore, the LEDs lights up, when thebox 10 is in normal pressure. In vacuum, thesensing switch 60 interrupts and no light is emitted. - The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
Claims (10)
1. A vacuum box comprising:
a lower box;
an upper cover;
an isolating layer installed on a top of the upper cover for sealing a seal layer on the lower box; the isolating layer having a check valve and a pressure relief valve;
a pump unit installed on the isolating layer; the pump unit including two pump tubes connected to the isolating layer through the check valve; each pump tube having a stud; and a gear set connected to the studs;
a motor installed on the isolating layer for driving the motor;
a battery set installed on the isolating layer for supplying power to the motor;
a control button installed on the upper cover for opening or closing a power to the box;
wherein the isolating layer is installed with a pressure display unit; the pressure display unit is formed by a pressure button installed in a pressure hole of the isolating layer by an airtight ring, a spring below the pressure button; a sealed airbag installed at a top cover of the pressure button and a periphery of the spring; and a display mask connected to the pressure button; the display mask is a sector transparent casing and is pivotally installed to ears of the isolating layer; a top of the display mask is mounted with at least two color indicators; a lower lateral side of the pressure button is installed with a sensing switch which sense the rising or descending of the pressure button.
2. The vacuum box as claimed in claim 1 , wherein the isolating layer has a pressure relief device; the pressure relief device is formed by a pressure relief button, a spring resisting against the opening of the pressure relief hole and the pressure relief button; a top of the pressure relief button exposes from the top of the upper cover.
3. The vacuum box as claimed in claim 1 , wherein one side of the display mask is extended with a post which is connected to the pressure button; and the display mask exposes from a viewing hole of the upper cover.
4. The vacuum box as claimed in claim 1 , wherein the corners of the upper cover and isolating layer are formed with a rotational time indicator; the time indicator indicates time and date.
5. The vacuum box as claimed in claim 1 , wherein the LEDs are installed to the display mask.
6. The vacuum box comprising:
a lower box;
an upper cover;
an isolating layer installed on a top of the upper cover for sealing a seal layer on the lower box; the isolating layer having a check valve and a pressure relief valve;
a pump unit; the pump unit including two pump tubes connected to the isolating layer by check valves; each pump tube having a stud; and a gear set connected to the studs;
a motor installed on the isolating layer for driving the motor;
a battery set installed on the isolating layer for supplying power to the motor;
a control button installed on the upper cover for opening or closing a power to the box;
wherein the isolating layer is installed with a pressure display unit; the pressure display unit is formed by an airtight ring in a pressure hole of the isolating layer; a pressure button installed in a pressure hole of the isolating layer by an airtight ring, a spring is below and resists against a top cover of the pressure button; and a display mask connected to the pressure button; the display mask is a sector transparent casing and is pivotally installed to ears of the isolating layer; a top of the display mask is mounted with at least two color indicators; a lower side of the pressure button is installed with a sensing switch which sense the rising or descending of the pressure button.
7. The vacuum box as claimed in claim 6 , wherein the isolating layer has a pressure relief device; the pressure relief device is formed by a pressure relief button, a spring resisting against the opening of the pressure relief hole and the pressure relief button; a top of the pressure relief button exposes from the top of the upper cover.
8. The vacuum box as claimed in claim 6 , wherein one side of the display mask is extended with a post which is connected to the pressure button; and the display mask exposes from a viewing hole of the upper cover.
9. The vacuum box as claimed in claim 6 , wherein the corners of the upper cover and isolating layer are formed with a rotational time indicator; the time indicator indicates time and date.
10. The vacuum box as claimed in claim 6 , wherein the LEDs are installed to the display mask.
Priority Applications (1)
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US10/601,293 US6830081B1 (en) | 2003-06-23 | 2003-06-23 | High efficiency vacuum box with indicators |
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US10/601,293 US6830081B1 (en) | 2003-06-23 | 2003-06-23 | High efficiency vacuum box with indicators |
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US20040256021A1 true US20040256021A1 (en) | 2004-12-23 |
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Cited By (9)
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US20070199612A1 (en) * | 2006-02-28 | 2007-08-30 | Bob Larimer | Decanter stopper with a vacuum pressure indicator |
US20070199615A1 (en) * | 2006-02-28 | 2007-08-30 | Bob Larimer | Vessel stopper with a pressure indicator |
US20070272325A1 (en) * | 2006-05-25 | 2007-11-29 | Shiu-Chu Tsay | Automatic suction structure of a vacuum container |
US7721771B2 (en) * | 2006-05-25 | 2010-05-25 | Ming-Shi Chou | Automatic suction structure of a vacuum container |
EP1961672A2 (en) * | 2007-02-22 | 2008-08-27 | Metrokane, Inc. | Vessel stopper with a vacuum pressure indicator |
EP1961672A3 (en) * | 2007-02-22 | 2008-10-08 | Metrokane, Inc. | Vessel stopper with a vacuum pressure indicator |
EP3369354A1 (en) * | 2017-02-24 | 2018-09-05 | Shin Hung Yih Technology Co., Ltd. | Negative pressure storage container |
USD910726S1 (en) * | 2019-12-31 | 2021-02-16 | Cixi Tianyou Electric Co., Ltd. | Vacuum fresh container |
TWI782842B (en) * | 2021-02-09 | 2022-11-01 | 邑軒實業有限公司 | Vacuum storage box |
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