CN107388030A - A kind of vehicle-mounted feeder - Google Patents
A kind of vehicle-mounted feeder Download PDFInfo
- Publication number
- CN107388030A CN107388030A CN201710582102.2A CN201710582102A CN107388030A CN 107388030 A CN107388030 A CN 107388030A CN 201710582102 A CN201710582102 A CN 201710582102A CN 107388030 A CN107388030 A CN 107388030A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- air supply
- mounted feeder
- gas
- valve
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0332—Safety valves or pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0335—Check-valves or non-return valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0178—Cars
Abstract
The present invention relates to a kind of vehicle-mounted feeder.The vehicle-mounted feeder of the present invention is by setting two sets of air supply units and connecting the intermediate duct of two sets of air supply units, and check-valves is set in the intermediate duct of each air supply unit, two cylinder packages supply for two outlet pipes simultaneously during normal work, when the cylinder package of one of air supply unit breaks down, another cylinder package can be utilized to continue uninterrupted supply, ensure that vehicle supply is uninterrupted, improve the security of vehicle supply.
Description
Technical field
The present invention relates to a kind of vehicle-mounted feeder.
Background technology
On-board high-voltage feeder refers to be installed in vehicle, and operating pressure is not less than 10MPa feeder；State
The interior relatively common gas cylinder feeder to be installed in CNG automobile, it is typically by steel gas bottle with reducer unit into work is pressed
Power is 20MPa~25MPa, and working media is compressed natural gas, and volume is big, function is single, integrated level is low.
The Chinese patent that Authorization Notice No. is CN205026382U is the mounted gas cylinder supply dress for disclosing a kind of CNG automobile
Put, including gas cylinder on vehicle and the pressure-reducing valve that is located on gas cylinder, this gas cylinder feeder have problems with：
One gas cylinder and a pressure-reducing valve are only installed on vehicle, will influence the normal of aerating device when gas cylinder breaks down and can not supplied
Use.
The content of the invention
It is an object of the invention to provide a kind of vehicle-mounted feeder that can be supplied for vehicle safety.
To achieve the above object, vehicle-mounted feeder of the invention adopts the following technical scheme that：
Technical scheme 1：Vehicle-mounted feeder includes at least two sets of air supply units, and air supply unit includes cylinder package and is connected to gas
Intermediate duct on the outlet side of bottle component, intermediate duct are provided with the check-valves that can prevent gas backflow from returning cylinder package, supply
Gas unit also include one end be connected with intermediate duct, the other end for the outlet pipe that is connected with the gas-guide pipeline of vehicle, it is each
The intermediate duct of air supply unit is interconnected to pass through other cylinder package when one of cylinder package breaks down
Supplied for each outlet pipe.
Technical scheme 2：On the basis of technical scheme 1, the air supply unit has two sets, the intervalve of two sets of air supply units
Road is connected by connecting line.
Technical scheme 3：The filter for filtering gas is additionally provided with the basis of technical scheme 2, in intermediate duct.
Technical scheme 4：On the basis of technical scheme 3, the intermediate duct include main line and with the connecting line
Connected collateral branch's pipeline, the filter includes main filter, the purifying tube being arranged on main line, in addition to is arranged on side
Collateral branch's filter on bye-pass.
Technical scheme 5：On the basis of technical scheme 4, pressure gauge and pressure switch are additionally provided with the main line.
Technical scheme 6：On the basis of technical scheme 5, the intermediate duct also includes being arranged on main line and collateral branch's pipe
The pressure-reducing valve in road intersection point downstream.
Technical scheme 7：It is the main filter, pressure gauge, pressure switch, check-valves, net on the basis of technical scheme 6
Change cylinder and collateral branch's filter is commonly connected to form pile-up valve on dispensing head.
Technical scheme 8：On the basis of technical scheme 1-7 any one, vehicle-mounted feeder also includes accommodating and fixing
The installation cabin of the sealing of the air supply unit, installation cabin are provided with the attachment structure for being used for being connected with vehicle.
Technical scheme 9：On the basis of technical scheme 8, the gas cylinder of the air supply unit is by hoop component relative to peace
Stowage is fixed, and hoop component includes cooperating to form two pieces of arcs of circle, passes through buckle knot between two pieces of arcs
Structure is locked.
Technical scheme 10：On the basis of technical scheme 1-7 any one, magnetic valve is additionally provided with the outlet pipe.
Technical scheme 11：On the basis of technical scheme 10, vehicle-mounted feeder also includes that magnetic valve break-make can be controlled
Electrically-controlled component.
Technical scheme 12：On the basis of technical scheme 11, electrically-controlled component includes detection magnetic valve with the presence or absence of failure
Fault detection module, it is that fault detection module includes that corresponding magnetic valve is set, magnetic valve can be shown whether the state of failure
Indicator lamp.
Technical scheme 13：On the basis of technical scheme 1-7 any one, cylinder package includes gas cylinder and is connected to gas
Pressure gauge, safety valve on bottle, in addition to it is arranged on the main valve at the gas outlet of gas cylinder.
The beneficial effects of the invention are as follows：The vehicle-mounted feeder of the present invention is by setting two sets of air supply units and supplying two sets
The intermediate duct connection of gas unit, and check-valves is set in the intermediate duct of each air supply unit, two gas during normal work
Bottle component supplies for two outlet pipes simultaneously, when the cylinder package of one of air supply unit breaks down, using another
One cylinder package continues uninterrupted supply, ensures that vehicle supply is uninterrupted, improves the security of vehicle supply.
Further, two sets of air supply units can ensure that two sets of air supply units can divide by the mode of connecting line connection
Arrangement is opened, causes to arrange the problems such as uneven without being set together.
Further, the main filter set on main line and the setting of purifying tube ensure that supervisor road direction outlet pipe or
The gas of collateral branch's pipeline input is pure enough；The setting of collateral branch's filter ensure that the pure of the gas passed through in collateral branch's pipeline
Degree.
Further, the setting of pressure-reducing valve ensure that from outlet pipe output gas pressure it is steady.
Further, each valve and pressure gauge etc. are integrated on a dispensing head so as to form the design of pile-up valve, not only
Greatly save space-consuming, and avoid connected by stainless steel pipeline caused by the problem of interface is more, poor air-tightness.
Further, the protective effects such as dust-proof, waterproof, but also side can not only be carried out to air supply unit by installing the setting in cabin
Air supply unit and car body be connected, facilitate the arrangement of air supply unit.
Further, the setting of hoop component facilitates the fixation to gas cylinder, and the setting of buckle structure to form anchor ear
Arc connection when it is very convenient quick.
Further, the setting of magnetic valve and electrically-controlled component can facilitate the control to gas circuit, and electrically-controlled component can control electromagnetism
The break-make of valve to the outlet pipe before connected load when changing load to carry out purging dedusting.
Further, the setting of fault detection module can conveniently detect which magnetic valve is faulty, and operation principle is：Electromagnetism
Valve is normally close valve, is turned on after energization, and conducting electric current is sufficiently large, and magnetic valve its circuit in normal work is connection, is passed through
Electric current is normally returned after weak current, and when magnetic valve breaks down, circuit is off, and electric current can not return when being passed through weak current
Return, so as to show fault message at indicator lamp.
Brief description of the drawings
Fig. 1 is the arrangement schematic diagram of the embodiment of the vehicle-mounted feeder of the present invention；
Fig. 2 is arrangement schematic diagram of the air supply unit in cabin is installed in Fig. 1；
Fig. 3 is the air-channel system schematic diagram of vehicle-mounted feeder in Fig. 1；
In figure：1- car bodies, 21- air supply units, 211- cylinder packages, 2111- gas cylinders, 2112- main valves, 2113- first pressure tables,
2114- safety valves, 2115- first filters, 212- intermediate ducts, 2121- main lines, 2122- collateral branch pipeline, 2123- second
Filter, 2124- second pressure gauges, 2125- pressure switches, 2126- check-valves, 2127- purifying tubes, 2128- pressure-reducing valves,
The filters of 2129- the 3rd, 213- outlet pipes, 2131- magnetic valves, 214- connecting lines, 22- installations cabin, 221- anchor ears.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of the vehicle-mounted feeder of the present invention, as shown in figure 1, vehicle-mounted feeder is mainly used in outdoor
Vehicle, outdoor vehicle include car body 1, can also use indoor vehicle in other embodiments.Supply is installed on the car body 1 of vehicle
Device, feeder include two sets of air supply units 21, two sets of air supply units 21 be mounted on car body 1 by installing cabin 22 respectively two
Side, and being arranged symmetrically, is connected between two sets of air supply units 21 by connecting line 214, so as to realize air supply unit 21
Cylinder package 211 can be simultaneously the outlet pipe of two air supply units 21 by another cylinder package 211 when breaking down
213 supply, ensure that supply is uninterrupted, improve the security of supply.
Rectangle cabin of the cabin 22 for sealing is installed, there is good sealing property, it is overall to be made by steel, it can play to storehouse
The good protection of interior air supply unit 21, collision of the foreign object to interior arrangement is not only prevented, and there is good waterproof and dustproof
Energy.There is the attachment structure for being used for being connected with car body 1 on installation cabin 22, there is the fixation of fixed air supply unit 21 in installation cabin 22
Structure.
As shown in Figures 2 and 3, air supply unit 21 be arranged on installation cabin 22 in, air supply unit 21 include cylinder package 211, in
Between pipeline 212 and outlet pipe 213.Cylinder package 211 includes gas cylinder 2111, for loading gas.Gas cylinder 2111 is installed
When installing in cabin 22 fixed by the structure of anchor ear 221, anchor ear 221 includes the semicircular plate of two panels, shape after two boards docking
Into the space of the external diameter of parcel gas cylinder 2111, two boards one end is hinged in installation cabin 22, and the other end is provided with and mutually snapped connection
Quick connection structure, can be achieved to the quick holding of gas cylinder 2111 with departing from.The afterbody of gas cylinder 2111 is provided with first pressure table 2113
With safety valve 2114, first pressure table 2113 is used for pressure value in Real Time Observation gas cylinder 2111, and safety valve 2114 can be in gas cylinder
Valve opening is lost heart when pressure value exceedes setting value in 2111, plays a part of safeguard protection.The front end of gas cylinder 2111 is provided with main valve
2112, main valve 2112 is arranged on the gas outlet of gas cylinder 2111, controls the outflow of gas in gas cylinder 2111.Main valve 2112 is provided with
First filter 2115, first layer filtering is carried out to the gas for flowing out main valve 2112.Intermediate duct 212 includes the He of main line 2121
Collateral branch's pipeline 2122, one end of main line 2121 are connected with main valve 2112, and the other end is connected with outlet pipe 213, outlet pipe
213 tail ends connect load（Treat air supply part）.Downstream is from upstream on main line 2121 and is disposed with the second filter 2123,
Two pressure gauge 2124- pressure switches 2125, check-valves 2126, purifying tube 2127 and pressure-reducing valve 2128, the setting of check-valves 2126
Gas backflow can be prevented.Collateral branch's pipeline 2122 separates between purifying tube 2127 and pressure-reducing valve 2128, two sets of air supply units 21
Collateral branch's pipeline 2122 is connected by connecting line 214, and collateral branch's pipeline 2122 is provided with the 3rd filter 2129.Connecting line 214
Connected state is constantly in collateral branch pipeline 2122, can pass through another when one of cylinder package 211 breaks down
Gas cylinder 2111 is that another outlet pipe 213 supplies with connecting line 214 through collateral branch's pipeline 2122, due to check-valves 2126
Set, the gas that another intermediate duct 212 is entered from collateral branch's pipeline 2122 will not flow into out of order cylinder package 211
It is dynamic.Outlet pipe 213 includes three branch roads, is respectively provided with a magnetic valve 2131 on every branch road, realizes multichannel independent gas supply, and
And facilitate circuit control.
In order to save arrangement space, and reduce pipe interface quantity, improve air-tightness, by the second filter 2123, second
Pressure gauge 2124, pressure switch 2125, check-valves 2126, purifying tube 2127, pressure-reducing valve 2128 and magnetic valve 2131 are integrated in
On one Ge Fa islands or dispensing head, a pile-up valve is formed, the pipeline of concatenation is respectively positioned on inside valve island, and each valve head passes through screw thread side
Formula is screwed on valve island, and the pile-up valve is as an integral installation in installation cabin 22.It is also equipped with installation cabin 22 automatically controlled
Component, electrically-controlled component can control the break-make of each magnetic valve 2131 respectively, meanwhile, electrically-controlled component is also integrated with fault detect mould
Block, fault detection module can detect the state of each magnetic valve 2131, and pass through corresponding each magnetic valve when breaking down
2131 indicator lamps set show the state of magnetic valve 2131, and operation principle is：Magnetic valve 2131 is normally close valve, is led after energization
Logical, conducting electric current is sufficiently large, and its circuit in normal work of magnetic valve 2131 is connection, and electric current is normal after being passed through weak current
Return, when magnetic valve 2131 breaks down, circuit is off, and electric current can not return when being passed through weak current, so as to refer to
Show and fault message is shown at lamp.It is because being inflated for a load that electrically-controlled component, which also has the reason for pipeline purging function, purging,
After the completion of, load is left from loading line, and dust is had on loading line, in order to ensure gas when loading next load
Quality makes the gas in gas cylinder 2111 enter outlet pipe 213, it is necessary to by electrically-controlled component control 2131 of short duration unlatching of magnetic valve
Row purging.
The vehicle-mounted feeder of the present invention is when in use：The cylinder package 211 of two sets of air supply units is simultaneously during normal work
Supplied for the outlet pipe 213 of two sets of air supply units 21, control the supply of every branch road by magnetic valve 2131 by electrically-controlled component
Whether；When a certain cylinder package 211 breaks down, the cylinder package 211 of failure no longer supplies, by another cylinder package
211 outlet pipes 213 for continuing as two air supply units 21 supply, due to the check-valves 2126 that is set in intermediate duct 212
In the presence of ensure that gas will not be flowed back in gas cylinder 2111.
In other embodiments：Feeder also can be replaced three sets of air supply units or four sets of air supply units, filter
Quantity, species also can such as increase and reduce the quantity of filter according to using appropriate change is needed, change other kinds of mistake
Filter；Also alterable, the downstream for being such as arranged on purifying tube also may be used for the position of check-valves；Install arrangement of the cabin on car body,
Fixed form also can suitably change；Fixed form of the gas cylinder in installation cabin also can be replaced block limit method；On pile-up valve
Some valves can also be drawn by pipeline, with facilitate arrangement or other needs.
Claims (13)
1. vehicle-mounted feeder, it is characterized in that, including at least two sets of air supply units, air supply unit is including cylinder package and is connected to
Intermediate duct on the outlet side of cylinder package, intermediate duct are provided with the check-valves that can prevent gas backflow from returning cylinder package,
Air supply unit also include one end be connected with intermediate duct, the other end for the outlet pipe that is connected with the gas-guide pipeline of vehicle, respectively
The intermediate duct of individual air supply unit is interconnected to pass through other gas cylinders group when one of cylinder package breaks down
Part supplies for each outlet pipe.
2. vehicle-mounted feeder according to claim 1, it is characterized in that, the air supply unit has two sets, and two sets of supply are single
The intermediate duct of member is connected by connecting line.
3. vehicle-mounted feeder according to claim 2, it is characterized in that, it is additionally provided with intermediate duct for filtering gas
Filter.
4. vehicle-mounted feeder according to claim 3, it is characterized in that, the intermediate duct include main line and with it is described
The connected collateral branch's pipeline of connecting line, the filter include main filter, the purifying tube being arranged on main line, in addition to
The collateral branch's filter being arranged on collateral branch's pipeline.
5. vehicle-mounted feeder according to claim 4, it is characterized in that, it is additionally provided with pressure gauge and pressure on the main line
Switch.
6. vehicle-mounted feeder according to claim 5, it is characterized in that, the intermediate duct also includes being arranged on main line
With the pressure-reducing valve in collateral branch's pipeline intersection point downstream.
7. vehicle-mounted feeder according to claim 6, it is characterized in that, the main filter, pressure gauge, pressure switch,
Check-valves, purifying tube and collateral branch's filter are commonly connected to form pile-up valve on dispensing head.
8. according to the vehicle-mounted feeder described in claim 1-7 any one, it is characterized in that, vehicle-mounted feeder also includes holding
The installation cabin of the sealing of the air supply unit is received and fixes, installation cabin is provided with the attachment structure for being used for being connected with vehicle.
9. vehicle-mounted feeder according to claim 8, it is characterized in that, the gas cylinder of the air supply unit passes through hoop component
Fixed relative to installation cabin, hoop component includes cooperating to form two pieces of arcs of circle, leads between two pieces of arcs
Cross buckle structure locking.
10. according to the vehicle-mounted feeder described in claim 1-7 any one, it is characterized in that, also set on the outlet pipe
There is magnetic valve.
11. vehicle-mounted feeder according to claim 10, it is characterized in that, vehicle-mounted feeder also includes that electricity can be controlled
The electrically-controlled component of magnet valve break-make.
12. vehicle-mounted feeder according to claim 11, it is characterized in that, electrically-controlled component includes whether detection magnetic valve is deposited
In the fault detection module of failure, it is that fault detection module includes that corresponding magnetic valve is set, magnetic valve can be shown whether failure
State indicator lamp.
13. according to the vehicle-mounted feeder described in claim 1-7 any one, it is characterized in that, cylinder package include gas cylinder with
And pressure gauge, safety valve on gas cylinder are connected to, in addition to it is arranged on the main valve at the gas outlet of gas cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582102.2A CN107388030A (en) | 2017-07-17 | 2017-07-17 | A kind of vehicle-mounted feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582102.2A CN107388030A (en) | 2017-07-17 | 2017-07-17 | A kind of vehicle-mounted feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107388030A true CN107388030A (en) | 2017-11-24 |
Family
ID=60339813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710582102.2A Withdrawn CN107388030A (en) | 2017-07-17 | 2017-07-17 | A kind of vehicle-mounted feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107388030A (en) |
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| US10914401B2 (en) * | 2017-01-10 | 2021-02-09 | The Heil Co. | Fuel monitoring system |
| US11207974B2 (en) | 2018-09-21 | 2021-12-28 | The Heil Co. | Multiple gas tank assembly with individual pressure monitoring |
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Application publication date: 20171124 |
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| WW01 | Invention patent application withdrawn after publication |