US20120279987A1 - Fluid Level Gauge - Google Patents
Fluid Level Gauge Download PDFInfo
- Publication number
- US20120279987A1 US20120279987A1 US13/464,516 US201213464516A US2012279987A1 US 20120279987 A1 US20120279987 A1 US 20120279987A1 US 201213464516 A US201213464516 A US 201213464516A US 2012279987 A1 US2012279987 A1 US 2012279987A1
- Authority
- US
- United States
- Prior art keywords
- bottle
- radiation
- emitter
- fluid
- sensor
- 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.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 125
- 230000005855 radiation Effects 0.000 claims abstract description 161
- 230000007246 mechanism Effects 0.000 claims abstract description 71
- 230000005670 electromagnetic radiation Effects 0.000 claims abstract description 27
- 230000008859 change Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 238000002372 labelling Methods 0.000 claims 4
- 230000004913 activation Effects 0.000 description 16
- 238000001994 activation Methods 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- 238000004891 communication Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000000344 soap Substances 0.000 description 5
- 238000013500 data storage Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000011436 cob Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
- B67D7/22—Arrangements of indicators or registers
- B67D7/221—Arrangements of indicators or registers using electrical or electro-mechanical means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K5/00—Holders or dispensers for soap, toothpaste, or the like
- A47K5/06—Dispensers for soap
- A47K5/12—Dispensers for soap for liquid or pasty soap
- A47K5/1202—Dispensers for soap for liquid or pasty soap dispensing dosed volume
- A47K5/1204—Dispensers for soap for liquid or pasty soap dispensing dosed volume by means of a rigid dispensing chamber and pistons
- A47K5/1205—Dispensing from the top of the dispenser with a vertical piston
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
- G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
- G01F23/2925—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means
- G01F23/2927—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means for several discrete levels, e.g. with more than one light-conducting sensing element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
- G01F23/2928—Light, e.g. infrared or ultraviolet for discrete levels using light reflected on the material surface
Definitions
- This invention relates to fluid level gauges and, more particularly, to fluid level gauges external to a removable fluid containing bottle in a fluid dispenser.
- Fluid dispensers are well known for dispensing hand cleaning fluids as may be provided, for example, in washrooms and hospitals.
- Examples of such dispensers include those disclosed in U.S. Patent Publication US 2008/0121663 to Ophardt et al, published May 29, 2008; U.S. Patent Publication US 2010/0288788 to Ophardt published Nov. 18, 2010; U.S. Patent Publication US 2011/0017769 to Ophardt published Jan. 27, 2011; U.S. Patent Publication US 2007/0158363 to Ophardt published Jul. 12, 2007 and U.S. Patent Publication US 2010/0147879 to Ophardt et al published Jun. 17, 2010, the disclosures of which are incorporated herein by reference. With such dispensers, as fluid from the reservoir bottle is used up, the fluid needs to be replaced as by removing and replacing an empty bottle with a bottle which is filled with fluid.
- Previously known automated mechanisms for determining the fluid level in the reservoir bottle include counters to count the number of times that a dispensing mechanism is activated and calculating with an estimation of the approximate dosage of each activation, the fluid dispensed to determine when a bottle of a given volume may be considered empty.
- Such prior art mechanisms suffer the disadvantage that they require monitoring of the volume of fluid in each bottle, monitoring of removal and attachment of a bottle and maintaining a count of the number of activations in order to estimate when a bottle is empty.
- Such arrangements have been found to be disadvantageous notably in manually operated dispensers as requiring an arrangement for the counting mechanism to be coupled to the pump mechanism.
- Such arrangements also have the disadvantageous in manually operated and automatic dispensers in requiring recognition as to when a bottle has been coupled to the dispenser, and recognition when a bottle that is coupled to the dispenser is full so as to represent an initiation point for counting.
- Such arrangements have been found to be disadvantageous in providing a requirement for having bottle sensing arrangements separate from mechanisms which may recognize the activation of the pump.
- the present invention provides a fluid level gauging mechanism external of a reservoir bottle in a dispenser which mechanism emits electromagnetic radiation and senses the electromagnetic radiation emitted which passes through the bottle or is reflected from the bottle through a wall of the bottle into the bottle at a first height and senses reflected radiation passing outwardly from the bottle at a second different height.
- An object of the present invention is to provide a simplified fluid level gauge for estimating the fluid level within a reservoir bottle.
- Another object is to provide a fluid level gauge mechanism for estimating the fluid remaining in both bottles which collapse when fluid is discharged and bottles which do not collapse.
- Another aspect of the present invention provides an arrangement useful for determining levels of fluids in bottles or other containers within dispensers whether the bottles or containers be collapsible or substantially not collapsible or rigid.
- the preferred invention utilizes a path for the radiation which extends through the fluid within the bottle such that differences in radiation sensed will vary depending upon the extent that the path for the radiation is either through the fluid in the bottle or through gas or air in the bottle above the fluid.
- the radiation path may merely pass merely once directly through the bottle without being reflected or may be a reflected path in which radiation is reflected and redirected preferably being reflected back through the bottle.
- the radiation path is preferably selected such that the path intersects with portions of the bottle in some conditions and, in other conditions, the path does not intersect with portions of the bottle.
- the radiation path for a collapsible bottle may also be a path which requires the radiation to pass through fluid in the bottle.
- either the reflection of radiation or a reduced transmission of radiation can be used to sense the presence of a portion of a bottle in a radiation path as contrasted with less or no radiation being sensed being indicative of an absence of a portion of a bottle in the radiation path.
- a radiation path can be selected such that reflection of radiation from the interior or exterior of a wall of a bottle can be used as an indication of an alteration of the shape of a collapsible bottle.
- the present invention provides a fluid level gauging mechanism for estimating fluid levels in a bottle and which mechanism includes a controller,
- the present invention provides a dispenser comprising:
- the bottle having a wall defining a cavity therein within which fluid is contained
- the wall having an exterior surface and an interior surface, the interior surface facing the cavity
- the housing carrying a fluid level gauging mechanism to estimate the level of fluid in the bottle
- the fluid level gauging mechanism comprising:
- the wall of the bottle including window portions permitting electromagnetic radiation within the range of wavelengths to pass through the wall, the window portions including an inlet window and an outlet window,
- the emitter is located outside the bottle exterior of the exterior wall positioned to direct the electromagnetic radiation into the bottle through the inlet window, and
- the senor is located outside the bottle exterior of the exterior wall to receive electromagnetic radiation from the emitter which is reflected within the bottle to pass outwardly through the outlet window,
- the emitter directs radiation into the bottle through the inlet window and the sensor receives radiation from the emitter reflected from within the bottle out through the outlet window.
- the emitter is carried on the housing at an emitter vertical height
- the sensor is carried on the housing at a sensor vertical height different than the emitter vertical height.
- the inlet window is located relative the housing at an inlet vertical height and an outlet window is located relative the housing at an outlet vertical height different than the inlet vertical height
- the electromagnetic radiation is infrared radiation
- the bottle has a wall of plastic material translucent to the electromagnetic radiation.
- the bottle carries a label on a wall of the bottle which assists in reflecting radiation emitted into the bottle towards a position where the radiation is to be sensed.
- FIG. 1 shows a fluid dispenser in accordance with a first embodiment of the invention
- FIG. 2 is an exploded view of the dispenser of FIG. 1 showing the housing, the pump mechanism and the bottle;
- FIG. 3 is a schematic cross-sectional side view of the dispenser of FIG. 1 ;
- FIG. 4 is a cross-sectional top view of FIG. 3 along section line 4 - 4 ′ in FIG. 3 schematically showing merely the bottle and the fluid level gauge mechanism;
- FIG. 5 is a schematic cross-sectional side view along section line 5 - 5 ′ in FIG. 4 view showing the fluid level gauge mechanism
- FIGS. 6 , 7 and 8 each is a schematic cross-sectional side view similar to FIG. 5 and showing respectively conditions in which the level of fluid in the bottle is, respectively, above both the IR emitter and sensor, intermediate the IR emitter and sensor, and below the IR emitter and sensor;
- FIG. 9 is a schematic diagram of a control mechanism for the dispenser of FIG. 1 ;
- FIG. 10 is a chart plotting the fluid height in a bottle versus the reflected radiation sensed
- FIG. 11 is a schematic cross-sectional view similar to FIG. 6 but showing a second embodiment of a dispenser in accordance with the present invention.
- FIG. 12 is a schematic cross-sectional view similar to FIG. 6 but showing a third embodiment of a dispenser in accordance with the present invention.
- FIG. 13 is a schematic cross-sectional view similar to an upper portion of FIG. 3 but showing a fourth embodiment of a dispenser in accordance with the present invention.
- FIG. 14 is a schematic cross-sectional view similar to an upper portion of FIG. 3 but showing a fifth embodiment of a dispenser in accordance with the present invention.
- FIGS. 15 , 16 , 17 and 18 are schematic pictorial views showing alternate arrangements for radiation from an emitter to be reflected from a wall for sensing by a sensor;
- FIG. 19 is a schematic cross-sectional view similar to FIG. 4 but showing a sixth embodiment of a dispenser in accordance with the present invention with the emitter and the sensor located at the corners of the bottle;
- FIG. 20 is a schematic vertical cross-sectional view along section line A-A′ in FIG. 19 ;
- FIG. 21 is schematic cross-sectional view similar to FIG. 4 but illustrating a seventh embodiment of a dispenser in accordance with the present invention using light guides;
- FIG. 22 is a pictorial front view of a bottle and pump assembly for use with a dispenser in accordance with an eighth embodiment of the present invention.
- FIG. 23 is a pictorial rear view of the bottle shown in FIG. 22 ;
- FIG. 24 is a schematic cross-sectional side view of a dispenser in accordance with an eighth embodiment of the present invention and identical to that shown in FIG. 3 but with the bottle and pump assembly of FIG. 22 substituted for the bottle and pump mechanism from FIG. 3 and showing the bottle filled with fluid to be dispensed;
- FIG. 25 is a schematic cross-sectional view of the eighth embodiment of the dispenser shown in FIG. 24 , however, with the bottle substantially collapsed;
- FIG. 26 is an enlarged cross-sectional side view of the pump mechanism as seen in FIG. 24 ;
- FIG. 27 is a front view of the bottle in a full condition as seen in FIG. 24 ;
- FIG. 28 is a front view of the bottle in a collapsed position as seen in FIG. 25 ;
- FIG. 29 is a cross-sectional side view of the bottle and pump assembly shown in FIG. 24 along center line B-B′ in FIG. 24 showing, however, the bottle in a full condition, a partially collapsed condition and a fully collapsed condition;
- FIG. 30 on the sheet with FIG. 28 , is a cross-sectional top view through the collapsed bottle shown in FIG. 25 along section line C-C′;
- FIG. 31 is a cross-sectional top view of the dispenser of FIG. 24 along section line D-D′ in FIG. 24 ;
- FIG. 32 is a schematic vertical cross-sectional side view along section line E-E′ in FIG. 31 ;
- FIG. 33 is a cross-sectional side view the same as FIG. 32 , however, showing the bottle in three successively collapsed positions;
- FIG. 34 is a cross-sectional view similar to FIG. 33 , however, showing an eleventh embodiment which has an alternate arrangement for emitters and sensors;
- FIG. 35 is a cross-sectional view similar to FIG. 34 , however, showing a twelfth embodiment.
- FIGS. 1 and 2 show a fluid dispenser 10 in accordance with the present invention having a housing 11 , a removable bottle 12 , and a pump mechanism 13 , with a fluid level sensing mechanism 14 only seen in FIG. 2 .
- the housing 11 carries a removable shroud 15 .
- the pump mechanism 13 is activated by an activation lever 16 .
- the dispensing unit 10 is shown in FIG. 3 as mounted to a wall 95 .
- the dispenser 10 is adapted to be manually activated by a user urging the activation lever 16 downwardly so as to dispense fluid from a discharge outlet 17 onto a hand of a user disposed underneath.
- the bottle 12 is closed at its bottom or lower end 18 .
- Sides 19 of the bottle 12 extend upwardly from the lower end 18 to an upper end 20 having top or shoulder 24 merging into an upstanding neck 21 carrying an opening 22 .
- the sides 19 are characterized as a front side, rear side, right side and left side.
- the bottle 12 has a thin wall 23 which forms the lower end 18 , sides 19 , shoulder 24 and the neck 21 .
- the wall 23 defines a cavity 25 within the bottle 12 within which fluid 98 to be dispensed is contained. As seen in FIG. 3 , the wall 23 has an outwardly directed exterior surface 26 and an interior surface 27 which faces inwardly into the cavity 25 .
- the housing 11 has a rearmost vertical wall plate 28 and a vertical back plate 29 .
- the wall plate 28 is adapted to be secured to the wall 95 .
- Side plates 30 and 31 extend along each side of the wall plate 28 and the back plate 29 forwardly in parallel vertical planes.
- a horizontal top plate 32 extends forwardly on top of the wall plate 28 and the back plate 29 forwardly between the side plates 30 and 31 .
- a horizontal bottom plate 33 extends forwardly below the wall plate 28 and the back plate 29 .
- a compartment 34 is defined rearward of the back plate 29 between the wall plate 28 and the back plate 29 , between the side plates 30 and 31 and between the top plate 32 and the bottom plate 33 .
- a horizontal bottle support bracket 35 is provided extending along the back plate 29 bridging between side plates 30 and 31 and presenting an upwardly directed support surface 41 to engage and support the bottle 12 .
- the housing 11 also has a pump support plate 42 which extends forwardly from the back plate 29 between the side plates 30 and 31 to support the pump mechanism 13 .
- the fluid level gauging mechanism 14 is schematically illustrated as comprising a rectangular circuit board 42 carrying an infrared emitter 44 and an infrared sensor 46 .
- the circuit board 42 is carried by the housing 11 within the compartment 34 rearward of the back plate 29 .
- Two vertically spaced openings 45 and 47 are provided through the back plate 29 .
- the emitter 44 is located to extend through the upper opening 45 and the sensor 46 is located to extend through the other, lower opening 47 , such that each of the emitter 44 and the sensor 46 is disposed rearward of the exterior surface 26 of the wall 23 of the rear side of the bottle 12 .
- the wall 23 of the rear side of the bottle 12 in front of each of the emitter 44 and the sensor 46 permits IR radiation within the range of wavelengths emitted by the IR emitter 44 and sensed by the IR sensor 46 to pass through the wall 23 .
- Each of the emitter 44 and sensor 46 is located outside the bottle 12 , exterior of the exterior surface 27 of the wall 23 of the rear side of the bottle 12 .
- the emitter 44 is positioned to direct IR radiation into the cavity 25 within the bottle 12 and the sensor 46 is located to receive IR radiation from the emitter 44 which is reflected from within the cavity 25 within the bottle and passes outwardly from the cavity 25 through the wall 23 of the rear side of the bottle.
- the emitter 44 directs radiation into the bottle 12 through the wall 23 of the rear side and the sensor 46 receives radiation from the emitter 44 which is reflected within the bottle 12 and passes from the cavity 25 out of the cavity through the wall 23 of the rear side of the bottle.
- the emitter 44 is at a vertical height above the sensor 46 .
- IR radiation from the emitter 44 is shown to extend along a path indicated by arrows 48 to travel through the wall 23 of the rear side of the bottle into the cavity 25 to traverse the cavity 25 to engage the wall 23 of the front side of the bottle 12 on a diametrically opposite the rear side of the bottle 12 and to be reflected on a path shown by the arrows 49 to traverse the cavity 25 and travel through the wall 23 of the rear side out of the cavity 25 to be sensed by the sensor 46 .
- the path of the radiation shown by the arrows 48 and 49 in FIG. 5 are shown by the double headed arrows 50 .
- the level of fluid in the bottle is indicated as 54 .
- the fluid level 54 in the bottle 12 will decrease as from a relatively full condition as shown in FIG. 3 successively to the conditions shown in FIG. 6 , FIG. 7 and FIG. 8 with the fluid level 54 progressing from heights above the emitter 44 , to the same height as the emitter 44 , to below the emitter 44 and above the sensor 46 , to the same height as the sensor 46 and then to below the sensor 46 .
- the fluid level gauging mechanism 14 includes a control mechanism 55 to control the operation of the emitter 44 and the sensor 46 .
- the control mechanism 55 operates the emitter 44 to emit electromagnetic radiation within a specific range of wavelengths and simultaneously operates the sensor 46 to sense electromagnetic radiation representative of the radiation emitted, preferably within the same specific range of wavelengths as the radiation emitted by the emitter 44 .
- the electromagnetic radiation emitted is infrared radiation and the sensor 46 senses infrared radiation of the same wavelength as emitted.
- the radiation is emitted by the emitter 44 periodically for short intervals as individual bursts so as to minimize power consumption.
- the radiation sensed by the sensor 46 as in any burst may be compared to the radiation emitted so as to determine a relative extent to which the radiation emitted by the emitter 44 is received by the sensor 46 .
- the relative radiation sensed by the sensor 46 for any burst is compared to either a pre-established threshold radiation or to the relative radiation sensed by the sensor 46 in other bursts.
- FIG. 9 schematically illustrates the control mechanism 55 as including a controller 80 which interfaces with the emitter 44 and the sensor 46 , as well as a power source 81 , a communication module 82 and a data storage module 83 .
- the control mechanism 55 is also shown as including an optional status indicator 84 , and an optional remote computer 85 .
- FIG. 10 is a graph illustrating the fluid height of the fluid level 54 in the bottle versus the relative level of radiation sensed by the sensor 46 when a constant level of radiation is emitted by the emitter in each successive burst of radiation.
- the fluid height is indicated as a percentage of the height of fluid in a full bottle.
- the relative vertical height of the emitter 44 is indicated as E and the relative vertical height of the sensor 46 is indicated as S.
- a mid-point between the emitter vertical height E and the sensor vertical height S is a fluid height corresponding to about 10 percent of the height of fluid in the bottle. With a bottle assumed to have a constant cross-sectional shape throughout its height, this 10 percent height of fluid in the bottle represents a fluid level corresponding to about 10 percent of the volume of the bottle.
- FIG. 10 shows in a solid line the radiation sensed by the sensor 46 when the bottle is filled with a first fluid comprising as an alcohol based hand cleaner, an aqueous solution of alcohol comprising about 60 percent alcohol and 40 percent water.
- FIG. 10 shows in a dashed line the radiation sensed by the sensor 46 when the bottle is filled with a second fluid comprising a typical soap based cleaner comprising an aqueous solution of water and soap having the following composition which is less transmissive of IR radiation than the aqueous solution of alcohol of the first fluid.
- the infrared radiation used is in the range of X to Y.
- the alcohol based cleaner transmits the radiation to a greater extent than the soap based cleaner.
- the level of reflection is substantially constant for each liquid as the fluid level 54 decreases downwardly from being substantially full to a point where the fluid level is above the emitter vertical height E in a condition as indicated in FIG. 6 .
- the sensed radiation is at a minimum.
- the sensed radiation rises to a maximum representing the radiation that is reflected back after passage through air in the bottle in a condition as indicated in FIG. 8 .
- the relative level of sensed radiation when the level is below the sensor vertical height S is substantially greater than the relative level of radiation emitted when the fluid height 54 is above the emitter vertical height E.
- the alcohol based cleaner transmits the radiation to a greater degree and thus the reflected radiation of the alcohol based cleaner when the fluid level 54 is below the sensor vertical height S is much closer to the sensed radiation when the fluid height 54 is above the emitter vertical height E.
- the IR response represented by the radiation sensed is indicated as having three portions, an above portion 100 over which the radiation sensed is substantially constant at approximately a first level, a below portion 104 over which the radiation is substantially constant at a relatively high level and an intermediate portion 102 over which the radiation sensed changes rapidly.
- the intermediate portion includes a decreasing segment 101 and an increasing segment 103 .
- the control mechanism 55 will take readings of the radiation sensed over time and by a comparison of the radiation sensed over time make a determination as to where the fluid level is. It will be appreciated to a person skilled in the art that this can be accomplished in a number of ways. For example, from a number of data points from the above portion 100 , on obtaining readings which deviate significantly from the above portion readings, and are less than the above portion readings, then an estimate can be made that the fluid level is in the intermediate portion 102 . Alternatively, the relative change of the sensed radiation level with time can be used so as to determine the relative change between readings over the above portion 100 as contrasted with the relative change in the intermediate portion 102 and identify the intermediate portion 102 by reason of a greater change per time or activation.
- the radiation sensed can also be useful for determining a condition that no bottle is present as, for example, by providing a consistent reading in which there is no substantially no reflected radiation received.
- the reflected radiation would not be received, for example, if no bottle was present and the dispenser did not have a front cover to its housing. Adjustments can be made to avoid false readings due to ambient radiation.
- the system can be used to determine if a bottle which is not intended for use with the dispenser has been inserted into the dispenser.
- a bottle for use with the invention may be provided with customized labels such as a customized rear label 72 with an inlet window 73 and an outlet window 74 located, respectively, relative to the emitter 44 and the sensor 46 .
- Products which may have labels which cover where inlet window 73 and outlet window 74 are to be provided would not have radiation sensed by the sensor 46 and thus provide an indication that an erroneous bottle may have been inserted.
- the control mechanism 55 optionally includes a remote computer 85 .
- the components comprising the control mechanism 55 that are provided within the dispenser may make data readings and transmit data to the remote computer 85 with the remote computer 85 , for example, to perform calculations.
- communication is from the communication module 82 merely one way to the computer with the remote computer 85 to perform calculations to determine when the dispenser may be substantially empty and thus via the computer system send a message as to a worker that the bottle for the fluid dispenser is close to empty and should be replaced or refilled.
- the communication may be two way as to provide communication from the computer 85 back to the controller 80 in the dispenser 10 as, for example, to activate a warning light 85 on the dispenser that the dispenser is close to empty.
- the control mechanism 55 is indicated as having a data storage module 83 which can store varying amounts of data depending upon the nature of the operation of the dispenser. Insofar as information for data reading is to be sent to a remote computer, then the size and capability of the data storage module 83 may be minimal. Insofar as the control mechanism 55 as contained within the dispenser 10 may itself desire to make calculations, then the size of the data storage module 83 and its capability may need to be increased.
- the dispenser 10 may be a manually operated dispenser or may be an automated dispenser with a power source driving the pump to dispense fluid as, for example, when activated by a switch which may comprise a manually operated switch or, more preferably, a touchless arrangement in which the proximity of a person's hand to the dispenser operates a dispenser.
- the power source may comprise a battery or other power source as, for example, 12 volt or 115 volt with the dispenser hardwired to the power source.
- the control mechanism 55 may be powered preferably by batteries which batteries or another power storage device may in a preferred embodiment may be recharged as, for example, by a solar battery charger or by a generator which provides power on manual movement of the activation lever 16 .
- the dispenser is manually operated with those portions of the control mechanism 55 within the dispenser operating with minimum power consumption for transmission of data from the communication module 82 to a remote computer system.
- the fluid for the first embodiment needs to be selected to be a fluid which will permit selected electromagnetic radiation to pass therethrough and be reflected by the front of the bottle back to the sensor 46 . It is within the scope of persons skilled within the art to select a suitable wavelength of electromagnetic radiation and the particular fluid for use in the bottle.
- Preferred electromagnetic radiation includes infrared radiation preferably with wavelengths in the range of X to Y. These wavelengths are useful for transmission through many commercially available alcohol based hand cleaners and soap based hand cleaners.
- preferred materials include glass and plastic materials with preferred plastic including polyethylene plastics. It is within the knowledge of a person skilled in the art to make a suitable selection as to the nature of the material for the wall of the bottle so as to permit suitable transmission of the selected radiation therethrough.
- the wall 23 of the bottle 12 may have the same composition and thickness throughout the entirety of the bottle or may have selective composition and thickness over window portions and the reflecting portion.
- window portions of the wall 23 of the rear side of the bottle 12 in front of the emitter 44 and the sensor 46 which are indicated as 300 and 301 , respectively, are the only portions of the wall 23 which need to have an ability to permit radiation to pass therethrough.
- a reflective portion 302 on the wall 23 of the front side of the bottle 12 is the only portion that needs to be at least partially reflective.
- the nature of the wall 23 may be such that over the window portions 300 and 301 merely a portion of the radiation passes through and some is reflected.
- the wall 23 may have the same composition and thickness throughout the entirety of the bottle or may have selective composition, thickness and/or reflective properties over the window portions 300 and 301 and the reflecting portion 302 .
- the ability of the wall 23 to transmit and/or reflect radiation can be modified over the window portions 300 and 301 and reflective portion 302 a number of ways.
- a front label 70 is applied to the exterior surface of the wall 23 of the front side of the bottle 12 .
- This label 70 covers the exterior surface 26 of the wall 23 over a reflection portion 302 where IR radiation from the emitter 44 engages the wall 23 along path 48 and is reflected back to the sensor 46 along path 49 .
- the front label 70 is optional, however, the front label 70 may preferably be provided to increase the extent to which IR radiation from the emitter 44 is reflected from the front side 53 of the bottle.
- the front label 70 for example, may have a reflective rear surface, for example, of an aluminum foil.
- the emitter 44 is carried on the housing 11 at a height referred to as an emitter vertical height E and the sensor 46 is carried on the housing 11 at a height referred to as the sensor vertical height S.
- the sensor vertical height S in some preferred embodiments is different than the emitter vertical height E.
- the emitter 44 is above the sensor 46 , that is, with the emitter vertical height E greater than the sensor vertical heights.
- the sensor 46 may be above the emitter 44 .
- a rear label 72 is shown in FIG. 11 applied to the exterior surface of the wall 23 of the rear side of the bottle 12 .
- the rear label 72 has openings therethrough in front of each of the emitter 44 and sensor 46 , respectively, which openings are an inlet opening 303 in front of the emitter 44 and an outlet opening 305 in front of the sensor 44 .
- the bottle may be chosen to have suitable physical arrangements so as to enhance, on one hand, transmission of light therethrough on the rear side and reflection on the front side 53 .
- the wall 23 on the rear side may be disposed to be perpendicular to radiation emitted from the emitter 44 and similarly over the outlet window 301 the wall 23 on the rear side may be disposed to be perpendicular to light reflected from the front side.
- the reflective portion 302 of the wall 23 on the front side may have a shape to optimize reflection as, for example, by having a convex surface which acts as a lens to direct light engaged thereon towards the sensor 46 at least over an area which is intermediate the emitter height E and the sensor height S.
- FIG. 12 illustrates a third embodiment in a side view similar to that shown in FIG. 6 , however, in which each of the sensor 46 and the emitter 44 have been disposed so as to direct radiation parallel their respective lines 48 and 49 .
- Each of the inlet window 300 in front of the emitter 44 and the outlet window 301 in front of the sensor 46 is shown to comprise a relatively thin portion of the wall 23 .
- the inlet window 300 has its exterior surface 26 and interior surface 27 each disposed to be perpendicular to the path 48 .
- the outlet window 301 is shown to have its exterior surface 26 and interior surface 27 perpendicular to the path 49 .
- the reflected portion 302 is shown to have both an interior surface 27 and an exterior surface 26 which are curved so as from the inside each provides a concave surface.
- a front label 70 is shown applied which includes a reflective section 306 with a mirrored interior surface to assist in reflecting radiation over merely the reflective portion 302 .
- This third embodiment also illustrates an arrangement in which the sensor 46 is disposed at a height above the emitter 44 .
- the activation lever 16 comprises a continuous length of metal rod having two Z-shaped side arm portions 56 and 57 joined by a centre bridging bar 58 . Each of the side portions 56 and 57 are pivotally coupled at their rear end 59 to the respective side plates 30 and 31 for pivoting about the same horizontal axis 60 .
- a spring member 61 is disposed between support plate 42 and the actuation lever 16 so as to bias the actuation lever 16 to pivot about the axis 60 counter-clockwise as seen in FIG. 3 .
- FIG. 3 illustrates an extended position in which the spring 61 has biased the actuation lever 16 as far counter-clockwise as possible. From the extended position of FIG. 3 , a user may engage the bridge portion 58 of the activation lever 16 and move the activation lever 16 downwardly against the bias of the spring 61 to a retracted position. On manual release of the activation lever 16 from the retracted position, the spring 61 moves the activation lever 16 to the extended position as shown in FIG. 3 .
- the pump mechanism 13 is schematically illustrated as having a piston chamber-forming tube 62 fixedly secured in an opening through the pump support plate 42 to extend downwardly and carrying a dip tube 63 fixedly secured in sealed relation and angled slightly forwardly.
- a piston member 64 is provided coaxially vertically slidably received within the piston chamber-forming tube 62 and biased upwardly by an internal pump spring 65 .
- An upper end 66 of the piston member 64 engages with the actuation lever 16 via the bridging bar 58 extending between the side arm portions 56 and 57 such that the actuation lever 16 in movement from the extended to the retracted position will displace the piston member 64 axially into the piston chamber-forming tube 62 against the bias of the pump spring 65 to displace fluid through a central axial discharge passageway 68 in the piston member 64 which connects to the hollow interior of a discharge tube 69 so as to discharge fluid from the outlet 17 .
- the piston member 64 , discharge tube 62 , and outlet 17 together move upwardly and downwardly relative the pump support plate 42 .
- Such pump mechanisms are well known to include one-way valves and seals to provide proper pumping, however, for ease of illustration are not shown.
- the opening 22 of the bottle 12 is shown as disposed loosely about the piston member 64 and providing for communication between the atmosphere and the interior of the bottle.
- the bottle 12 may readily be removed by the lower end 18 of the bottle 12 being moved forwardly of the bottle support bracket 35 .
- the dip tube 63 is preferably tilted forwardly to assist in permitting the bottle 12 to be slid vertically and rearwardly on to and off of the dip tube 63 .
- the bottle 12 when in use, merely rests on the bottle support bracket 35 and may, to some extent, tip forwardly, for example, until the neck 21 may engage on the piston member 64 .
- FIGS. 1 to 7 The preferred embodiment in FIGS. 1 to 7 has been illustrated with a schematic pump mechanism 13 which is secured to the pump support plate 42 and not to the bottle 12 . It is appreciated that many other removable and non-removable bottles and pumping mechanisms may be provided including those in which the pump mechanism is fixedly secured to the bottle and removable with the bottle.
- the particular nature of the pump mechanism 13 formed by the piston chamber-forming tube 62 and the piston member 64 is not essential and many different pump mechanisms may be adopted as known to persons skilled in the art.
- FIG. 13 illustrates an embodiment of the invention which is identical to the first embodiment of FIGS. 1 to 7 with the exception that an electrical power generator 120 is coupled to the end 118 of a rigid extension 119 of the actuator 16 such that manual movement of the actuator 16 creates electrical power by deflecting a piezoelectric harvester 150 as in the manner of that described in the applicant's co-pending U.S. Patent Publication US 2010/0288788 published Nov. 18, 2010 which is incorporated herein by reference.
- the electrical power generated by manual movement of the actuator 16 is used to operate the controller mechanism 55 and/or to charge any power sources.
- FIG. 14 illustrates an embodiment of the invention which is identical to the first embodiment of FIGS. 1 to 7 with the exception that it is adapted for automated dispensing by providing an electric motor to rotate a wheel 122 about an axis 124 with an eccentric cam pin 125 carried on the wheel 122 coupled by a link 124 to an end 118 of a rigid extension 119 of the actuator to dispense fluid as activated by an activation switch, such as a manually operated switch carried on the cabinet 11 or a hand sensing switch disposed, for example, on the shroud 15 to sense a user's hand underneath the dispenser 10 vertically below the outlet 17 .
- an activation switch such as a manually operated switch carried on the cabinet 11 or a hand sensing switch disposed, for example, on the shroud 15 to sense a user's hand underneath the dispenser 10 vertically below the outlet 17 .
- the fluid level gauging mechanism 14 is shown as comprising a single circuit board 42 with a single emitter 44 and a single sensor 46 and in which the emitter 44 and sensor 46 are disposed at different vertical heights.
- FIGS. 15 to 18 schematically illustrate a number of different configurations for the fluid level gauging mechanism 14 .
- FIGS. 15 to 18 schematically illustrate the wall 23 of the front side of the bottle spaced from a circuit board 42 carrying an emitter 44 and at least one sensor 46 .
- each emitter is shown as a circle on each circuit board and each sensor is shown as a rectangular on each circuit board.
- a circuit board 42 carries the emitter 44 vertically above the sensor 46 in a manner substantially identical to that illustrated in the first, second and third embodiments. However, the circuit board 42 also carries a secondary sensor 46 a disposed vertically above the emitter 44 .
- the radiation received by the sensor 46 can determine when the liquid level is at a height intermediate the emitter 44 and the sensor 46 .
- the radiation received by the sensor 46 a can determine whether the fluid is at a height between the sensor 46 a and the emitter 44 .
- the level gauging mechanism 14 can provide indications as to different heights of fluid in a bottle.
- FIG. 16 shows the emitter 44 as a circle and the sensor 46 as a rectangle coincident on the circle as in the case when a single element may serve a dual purpose of being both a sensor 46 and an emitter 44 located at the same location.
- the emitted radiation extends towards the wall 23 along the same path 131 that the reflected radiation travels.
- the arrangement in FIG. 16 can be used in each of the first, second and third embodiments to sense the fluid level, however, will provide in the context of a chart shown in FIG. 10 a much sharper transition in the plot of fluid height in a bottle versus reflected radiation sensed.
- FIG. 16 shows the emitter 44 as a circle and the sensor 46 as a rectangle coincident on the circle as in the case when a single element may serve a dual purpose of being both a sensor 46 and an emitter 44 located at the same location.
- the emitted radiation extends towards the wall 23 along the same path 131 that the reflected radiation travels.
- the arrangement in FIG. 16 can be used in
- 16 also schematically illustrates a cone 130 representing the radiation as emitted from the emitter 44 as it travels outwardly from the emitter 44 .
- Different emitters may irradiate radiation at different angles about a center line 131 and a relative angle of the cone 130 of emission may be selected to be narrower or wider having regard to the surfaces from which radiation is desired to be reflected.
- FIG. 17 shows an arrangement with the circuit board 42 carrying an emitter 44 and two horizontally spaced sensors 46 and 46 a , however, in this case with the sensor 46 a further from the emitter 44 than the sensor 46 .
- FIG. 18 shows an arrangement the same as in FIG. 15 , however, with a second circuit board 42 a spaced to one side beside the first circuit board 42 .
- the second circuit board 42 a is shown as carrying three additional sensors 46 b , 46 c and 46 d . Radiation from the emitter 44 may be received by each of the sensors 46 , 46 a , 46 b , 46 c and 46 d , however, reflective paths are shown merely for radiation to be received by sensors 46 b and 46 d.
- FIGS. 19 and 20 illustrate views of a fourth embodiment of a dispenser in accordance with the present invention.
- FIGS. 19 and 20 comprise, respectively, a top cross-sectional view and a side cross-sectional view substantially the same as those shown in FIGS. 15 and 16 with the first embodiment.
- the fourth embodiment of FIGS. 19 and 20 differs from the first embodiment of FIGS. 4 and 5 in that the emitter 44 and the sensor 46 are each disposed adjacent a rear corner of the bottle 12 , outwardly of a rear label 72 carried on the exterior surface of the wall 23 on the rear side of the bottle 12 .
- the sensor 46 and emitter 44 are shown at respective rear corners 307 and 308 at locations which avoids the label 72 .
- FIG. 20 is a schematic side view of the embodiment shown in FIG. 19 along section line A-A′.
- the emitter 44 or the sensor 46 would be seen and thus, for convenience of illustration, the relative height and location of the emitter 44 and sensor 46 is shown and, as well, the label 42 shown as cut away. Further, the dip tube 63 is not shown in cross-section.
- FIGS. 19 and 20 three different paths for radiation emitted from the emitter 44 are shown by which radiation may be reflected internally within the bottle 12 so as to be received by the sensor 46 .
- a first path indicated by the longest arrows 141 is reflected off the wall 23 of the bottle 12 on the diametrically opposite front.
- a second path shown by intermediate length arrows 142 is reflected off a bulbous concave end 139 of the dip tube 63 .
- a third path shown by the shortest arrows 143 is reflected off a cylindrical stem 140 of the dip tube 63 . It is to be appreciated that in order to have reflection along all three reflective paths, then the cone of emission from the emitter 44 needs to be directed at a sufficient angle to include each of the two most divergent paths, second and third paths represented by arrows 142 and 143 . As a variant, the emitter 44 may have a smaller cone of emission and, for example, merely provide for emission along the first and second paths indicated by arrows 141 and 142 .
- the arrangement illustrated in the seventh embodiment of FIGS. 19 and 20 is advantageous so as to permit the bottle 12 to carry a rear label 72 provided the label 72 does not extend as far as the rear corners 307 and 308 where the emitter 44 and sensor 46 are located.
- the arrangement also has the advantage of permitting the mechanism 14 to determine whether or not the dip tube 63 is present and to determine the nature of the dip tube 63 .
- the dip tube 63 could have different configurations providing for increased or decreased reflection and the dip tube 63 may be chosen to have surfaces which, to different extents, reflect or absorb the radiation be emitted.
- the configuration or reflectance or absorbency of the dip tube determinations can be made from the reflected radiation sensed as to which dip tube may be present.
- the mechanism 14 may thus provide feedback as to the nature of the dip tube and its associated bottle and/or fluid.
- FIG. 21 illustrates a seventh embodiment of a dispenser in accordance with the present invention.
- FIG. 21 is a cross-sectional top view substantially the same as FIG. 4 , however, with the notable difference that the circuit board 42 and the emitter 44 and sensor 46 now comprise a vertically disposed circuit board 42 carrying the emitter 44 and the sensor 46 on opposite sides each disposed away from each other.
- An emitter light guide 146 and a sensor light guide 147 are provided.
- the emitter waveguide 146 provides a conduit for the emitted radiation.
- the emitter waveguide 146 has an inlet 148 to receive radiation from the emitter 144 and to transmit the radiation to an outlet 149 disposed on the left side 167 of the bottle 12 .
- the emitter waveguide 146 extends inwardly of the side plate 30 of the housing 11 .
- the sensor light guide 147 has an inlet 150 on the right side 165 of the bottle 12 adapted to receive radiation from the outlet 149 of the emitter light tube 146 .
- the sensor waveguide 147 transmits radiation from its inlet 150 to its outlet 151 from which radiation is transmitted to the sensor 46 .
- the sensor waveguide 147 also extends inside of the side plate 31 of the housing 11 .
- waveguides 146 and 147 are provided as in the context of the embodiment illustrated so as to effectively locate the place of emission of the radiation and place of sensing of the radiation at convenient locations when, for example, the side plates 30 and 31 of the housing 11 do not have a depth or thickness which permits easy location of the emitter 44 or sensor 46 at the left and right side.
- the outlet 149 of the emitter waveguide 146 and the inlet 150 of the sensor waveguide 147 may be disposed at the same height or, preferably, at different heights.
- FIG. 21 illustrates an arrangement where the radiation path is direct across the bottle 12 from the outlet 149 to the inlet 150 without any reflectance. With such an arrangement, a chart of fluid height against radiation sensed as in FIG. 10 will have a relatively shorter intermediate segment 102 .
- FIG. 22 shows a front pictorial view of a bottle and pump assembly 160 for use in the dispenser of this ninth embodiment.
- the assembly 160 includes a bottle 12 and a pump mechanism 13 .
- the bottle 12 has a configuration with similarities to that of the bottle 12 illustrated in the first embodiment.
- the bottle is closed at its bottom 18 .
- Sides 19 of the bottle extend upwardly from the bottom 18 to an upper end 20 having the shoulder 24 and an upstanding neck 21 with an opening 22 .
- the bottle 12 has a thin wall 23 which forms the bottom 18 , sides 19 , shoulder 24 and the neck 21 .
- the wall 23 defines a cavity 25 within the bottle 12 in which fluid to be dispensed is to be contained.
- the wall 23 has an outwardly directed exterior surface 26 and an interior surface 26 which faces inwardly into the cavity 25 .
- the upstanding neck 21 carries threads 161 .
- a radially inwardly extending annular groove is provided between the shoulders 24 of the bottle 12 and the threads 161 .
- the bottle is indicated as having a front side 164 , a right side 165 , a rear side 166 and a left side 167 .
- a front label 70 is applied to the front side 164 and a rear label 72 is applied to the rear side 166 .
- the pump mechanism 13 may be best seen in cross-section in FIG. 24 and in the exploded view of the cross-section from FIG. 24 in FIG. 26 .
- the pump mechanism 13 comprises a piston chamber-forming body 168 and a piston-forming element 169 disposed for reciprocal sliding relative to the piston chamber-forming body 168 .
- the piston chamber-forming body 168 defines within an inner cylindrical wall 170 a piston chamber 172 .
- the inner cylindrical wall 170 is connected via an intermediate wall 173 to an outer flange 174 adapted to be sealably threadably engaged onto the neck 21 of the bottle 12 .
- An inner end wall 175 of the piston chamber 172 has opening 176 for communication with fluid inside the bottle 12 .
- a one-way valve 177 provides for flow merely outwardly through the openings 176 .
- the piston-forming element 169 carries a resilient inner disc 178 which engages the cylindrical wall 170 to permit fluid flow outwardly therepast yet to prevent fluid flow inwardly.
- An outer sealing disc 179 is carried on a hollow stem 180 of the piston-forming element 169 outwardly of the inner disc 178 to prevent fluid flow outwardly therepast.
- the piston-forming element 169 includes a hollow discharge tube 69 which extends the discharge passageway 68 to an outlet 17 from which fluid is to be dispensed.
- an internal pump spring 65 is provided to bias the piston-forming element 169 upwardly and axially outwardly relative to the piston chamber-forming body 168 .
- the pump mechanism 13 shown in FIGS. 24 and 26 is of a type illustrated in U.S. Pat. No. 5,282,552 to Ophardt, issued Feb. 1, 1994, the disclosure of which is incorporated herein by reference. Various other pump mechanisms may be used.
- the assembly 160 comprising the bottle 12 and the pump mechanism 13 is a removable assembly which can be removed from the dispenser 12 for replacement after the bottle 12 may be emptied of its fluid.
- the pump support plate 42 is provided with a stepped central opening providing a lower plate portion to be received within the groove 126 about the neck 21 of the bottle 12 .
- the pump support plate 42 has a slotway opened forwardly by which the assembly 160 can be slid rearwardly to resiliently engage the groove 162 about the neck 21 of the bottle 12 to the support plate 42 .
- the pump support plate 42 as seen in FIG. 3 , also provides for secured removal and engagement of the pump mechanism 13 shown in the first embodiment independent of the bottle 12 in the first embodiment.
- dispensers 12 shown in the first embodiment and in the ninth embodiment shown in FIG. 24 are interchangeable and adapted to receive either bottle 12 as in FIG. 3 which is open to the atmosphere and the bottle 12 as shown in FIG. 24 which is sealably engaged with the pump mechanism 13 .
- the bottle 12 is shown to be a collapsible bottle with the pump mechanism 13 creating a vacuum in the bottle on dispensing fluid such that the bottle collapses, however, this is not necessary.
- the bottle 12 in the ninth embodiment as shown in FIG. 24 could have its pump mechanism 13 modified so as to provide for atmospheric air to enter the bottle on fluid being dispensed from the bottle as with various vacuum relief and venting arrangements as are known to a person skilled in the art.
- air is not permitted to enter the bottle and the vacuum is created within the bottle 12 which attempts to collapse the bottle.
- the bottle 12 in the ninth embodiment is preferably a collapsible bottle, that is, a collapsible bottle as disclosed in U.S. Patent Application Publication US 2009/0114679 to Ophardt et al published May 7, 2009, the disclosure of which is incorporated herein by reference.
- the bottle 12 is collapsible in a manner that at least one dimension of the bottle varies as the bottle 12 collapses from a full position to an empty position.
- the right side 165 and the left side 167 of the bottle 12 each carry a recessed portion referred to as a valley 198 on the right side 165 and a valley 199 on the left side 167 .
- These valleys 198 and 199 provide the bottle 12 with a propensity to collapse in a substantially controlled manner as seen in the side view from a full bottle condition shown in FIG. 24 to a collapsed bottle condition shown in FIG. 25 .
- FIG. 27 illustrates a front view of the bottle in a full view as seen in FIG. 24 and FIG. 28 illustrates a front view of the bottle as in a collapsed position as seen in FIG. 25 .
- FIG. 29 illustrates a cross-sectional front view as along section line B-B′ in FIG. 24 showing as a first profile indicated as 201 a condition of the bottle in a full position as seen in FIG. 24 .
- FIG. 29 shows in a third profile indicated as 203 a condition of the bottle in the collapsed position as shown in FIG. 25 .
- FIG. 29 shows in a second profile indicated as 202 a condition of the bottle in a partially collapsed position intermediate the full profile 201 and the collapsed profile 203 .
- FIG. 29 illustrates a cross-sectional front view as along section line B-B′ in FIG. 24 showing as a first profile indicated as 201 a condition of the bottle in a full position as seen in FIG. 24 .
- FIG. 29 shows in a third profile indicated as
- the bottom 18 of the bottle in the full profile 201 is at a lowermost position proximate the bottle support bracket 35 .
- the bottom 18 of the bottle 12 With emptying of the bottle 12 and collapse of the bottle, the bottom 18 of the bottle 12 progressively moves upwardly to the intermediate position of the bottom 18 shown on profile 202 and then to the higher position of the bottom 18 as seen in the more fully collapsed profile 203 .
- FIG. 30 illustrates a horizontal cross-sectional view through the collapsed bottle of FIG. 25 along section C-C′ showing that each of the front side 164 and the rear side 166 have been drawn together with each of right side 165 and the left side 167 folded about the centers of their respective valleys indicated as 198 and 199 .
- FIG. 31 illustrates a horizontal cross-section through section line D-D′ in FIG. 24 and to FIG. 32 showing a vertical cross-section through section line E-E′ in FIG. 31 .
- FIGS. 31 and 32 show views substantially the same as those shown in FIGS. 19 and 20 , respectively, however, in the context of a collapsible bottle which does not include a dip tube. In each of FIGS. 31 and 32 , the bottle is full in FIG. 24 .
- an emitter 44 is provided at one rear corner 308 of the bottle and, at the other rear corner 307 at a height different than the emitter 44 .
- a sensor 46 is provided at one rear corner 308 of the bottle. Radiation from the emitter 44 reflects off the front side 164 to be sensed by the sensor 46 .
- FIG. 33 is a cross-sectional view identical to that shown in FIG. 32 with the exception that the bottle 12 has been collapsed by withdrawal of fluid.
- profile 204 for the bottle is shown at a point when the bottom 18 of the bottle 12 has moved upwardly to above the height of the sensor 46 at which point substantially no radiation from the emitter 44 would reach the sensor 46 .
- the amount of radiation received by the sensor will be significantly reduced as compared to the radiation sensed when the bottom 18 is below the sensor 46 . This significant drop in radiation can be sensed and used as an indication of the extent to which fluid has been withdrawn from the bottle.
- FIG. 34 illustrates a modification of the embodiment illustrated in FIG. 33 so as to provide a secondary sensor 46 a at a height above the emitter 44 .
- profile 205 for the bottle is shown at a point when the bottom 18 of the bottle has been moved upwardly to above the height of the emitter 44 .
- FIG. 34 will have the same manner of sensing and operation as in FIG. 33 , however, in addition, will be able to sense a change in radiation sensed when the bottom 18 rises above the emitter 44 at which point the upper sensor 46 a will no longer receive reflected light.
- FIG. 34 also illustrates an alternate arrangement in which a front cover 220 is provided to close the front of the housing 11 as between the side plates 30 and 31 and then rearwardly.
- Such a cover 220 may be provided to prevent unauthorized access to the bottle 12 .
- the cover 220 may be provided to have a reflective rear surface so as to provide a substantial reflection of radiation to the sensor 46 when the bottom 18 of the bottle out of the path of radiation from the emitter 44 , that is, to provide a change in radiation sensed by the sensor 46 as the bottom 18 rises past the emitter 44 .
- a suitable selection of one or more emitters 44 and sensors 46 may be arranged so as to provide for suitable change in reflectance for a collapsing bottle 12 so as to provide reasonable feedback as to when the bottle present, filled and partially or substantially empty.
- one or more emitters and one or more sensors may be provided so as to provide reasonable sensing of fluid levels in a dispenser whether a collapsing bottle or a non-collapsing bottle may be installed in the dispenser.
- the controller may be able to selectively use certain of the emitters and sensors for optimum sensing of fluid levels having regard to the particular nature of the bottle installed as to whether it be collapsible or non-collapsible.
- the selection of the specific emitters or sensors which are to be used for sensing with any bottle may be controlled automatically as determined by feedback from information sensed, or by feedback based on the nature of the bottle and pump applied to the dispenser, or by manual input.
- FIGS. 22 to 35 illustrates one preferred collapsible bottle 12 , however, the invention is limited to this one collapsible bottle.
- Collapsible bottles suitable for use are bottles in which a dimension, relative proportion or shape changes in moving from a full position to a collapsed position.
- Other known collapsible bottles which could be used include the bottles as described in the following U.S. patents, copies of which are incorporated herein by reference: U.S. Pat. No. 7 ,530,475 to Ophardt, issued May 12, 2009 and U.S. Pat. No. 3,727,703 to Cobb, issued Apr. 17, 1973.
- FIG. 21 shows a configuration in which radiation is passed from an emitter outlet 149 at one location on the dispenser through a cavity within the dispenser housing 11 to contain the bottle 12 with such radiation to be received by a sensor inlet 150 at another location on the dispenser and without requiring reflection of the radiation.
- Such an arrangement is useful in the context of a non-collapsing bottle in determining the difference in radiation transmitted as, for example, when the liquid level is above the path of the radiation as contrasted when the liquid level is below in total or in part of the path of radiation.
- Such an arrangement is also useful in the context of a collapsible bottle so as to measure the difference in radiation when there is a portion of the bottle in the radiation path between the radiation outlet 149 and the radiation inlet 150 compared to when no portion of the bottle in the radiation path as may occur by the dimensions or shape of a collapsible bottle being changed such that in one condition a portion of the bottle is in the path of radiation and, in another condition, no portion of the bottle is not in the path of radiation.
- FIG. 35 shows a cross-sectional view the same as in FIG. 34 , however, with the exception of a provision of an emitter 44 a to direct radiation along a radiation path 301 directed at an angle downwardly and forwardly.
- FIG. 35 illustrates one arrangement where the changes in radiation reflected from a portion of a bottle can be used to indicate a relative extent to which a collapsible bottle is full.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/167,358 US9027788B2 (en) | 2011-05-06 | 2014-01-29 | Fluid level gauge |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2739362A CA2739362A1 (fr) | 2011-05-06 | 2011-05-06 | Cadran de niveau de carburant |
CA2739362 | 2011-05-06 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/167,358 Continuation US9027788B2 (en) | 2011-05-06 | 2014-01-29 | Fluid level gauge |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120279987A1 true US20120279987A1 (en) | 2012-11-08 |
Family
ID=46045969
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/464,516 Abandoned US20120279987A1 (en) | 2011-05-06 | 2012-05-04 | Fluid Level Gauge |
US14/167,358 Active US9027788B2 (en) | 2011-05-06 | 2014-01-29 | Fluid level gauge |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/167,358 Active US9027788B2 (en) | 2011-05-06 | 2014-01-29 | Fluid level gauge |
Country Status (5)
Country | Link |
---|---|
US (2) | US20120279987A1 (fr) |
EP (1) | EP2520910B1 (fr) |
CN (1) | CN102795383A (fr) |
AU (1) | AU2012202564B2 (fr) |
CA (1) | CA2739362A1 (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160249774A1 (en) * | 2015-02-24 | 2016-09-01 | Op-Hygiene Ip Gmbh | Liquid Dispenser With Removable Mobile Dispenser |
US20170096322A1 (en) * | 2014-07-13 | 2017-04-06 | Lev Volftsun | Beverage Dispensing System |
US20170105584A1 (en) * | 2015-10-15 | 2017-04-20 | Op-Hygiene Ip Gmbh | Cover Arrangement for Fluid Dispenser |
US9939307B2 (en) * | 2016-01-09 | 2018-04-10 | David R. Hall | Optical proximity sensor based toilet with fill tube proximity level sensing |
US10072962B2 (en) | 2016-07-05 | 2018-09-11 | Ecolab Usa Inc. | Liquid out-of-product alarm system and method |
US10791886B2 (en) | 2015-01-23 | 2020-10-06 | Gpcp Ip Holdings Llc | Estimating users of a product dispenser |
US11069929B1 (en) * | 2016-05-24 | 2021-07-20 | NDSL, Inc. | Apparatuses and methods for optically monitoring fluid level in a container, such as a battery, using a non-contact optical detector on an outside surface of the container |
US11117793B1 (en) * | 2020-07-16 | 2021-09-14 | Pepsico, Inc. | Contactless autofill dispensing |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013158184A1 (fr) * | 2012-04-20 | 2013-10-24 | Nordson Corporation | Dispositif, système et procédé pour suivre la configuration ou l'historique de fonctionnement d'une buse dans un système d'injection de fluides |
EP3367863B1 (fr) | 2015-10-30 | 2020-12-02 | Kimberly-Clark Worldwide, Inc. | Système de détermination acoustique de l'utilisation d'un produit |
US11412900B2 (en) | 2016-04-11 | 2022-08-16 | Gpcp Ip Holdings Llc | Sheet product dispenser with motor operation sensing |
US11395566B2 (en) | 2016-04-11 | 2022-07-26 | Gpcp Ip Holdings Llc | Sheet product dispenser |
CA2968112A1 (fr) | 2016-05-26 | 2017-11-26 | Op-Hygiene Ip Gmbh | Entretien de distributeur destine a une installation comportant plusieurs salles de bain |
US10144027B2 (en) * | 2016-10-24 | 2018-12-04 | Heiner Ophardt | System for monitoring fluid in a fluid dispenser |
US20180118554A1 (en) * | 2016-11-01 | 2018-05-03 | Sone Llc | Apparatus for dispensing viscous liquids from a container |
US10874265B2 (en) | 2017-05-10 | 2020-12-29 | Gpcp Ip Holdings Llc | Sheet product level sensor calibration and indication systems and methods |
US11181413B2 (en) | 2017-08-29 | 2021-11-23 | Gpcp Ip Holdings Llc | Product level detection apparatuses and systems for fluid dispensers |
EP3672463B1 (fr) * | 2017-12-29 | 2022-09-07 | Colgate-Palmolive Company | Système distributeur |
EP3769850A1 (fr) * | 2019-07-22 | 2021-01-27 | Open Innovation 2 Go, SL | Bouchon pour récipient de distribution de produits liquides |
CA3050975C (fr) | 2019-08-01 | 2022-11-15 | Op-Hygiene Ip Gmbh | Distributeur de fluide avec capteur pour determiner le volume de fluide dans un recipient repliable |
US11617478B2 (en) | 2019-10-09 | 2023-04-04 | Gpcp Ip Holdings Llc | Systems and methods for product level tracking of sheet product rolls |
CA3099061A1 (en) | 2019-11-15 | 2021-05-15 | Op-Hygiene Ip Gmbh | Fluid dispenser with wake up sensor |
CA3086861A1 (fr) | 2020-07-14 | 2022-01-14 | Op-Hygiene Ip Gmbh | Distributeur de liquide avec thermometre |
US11731146B2 (en) * | 2020-12-07 | 2023-08-22 | Op-Hygiene Ip Gmbh | Fluid dispensing system with adapter for a table top dispenser |
CA3172008A1 (fr) | 2021-09-10 | 2023-03-10 | Op-Hygiene Ip Gmbh | Distributeur a fluide comprenant un couvercle lumineux |
DE102021124969A1 (de) * | 2021-09-27 | 2023-03-30 | Schülke & Mayr GmbH | Adaptersystem zum Anordnen eines Fluidbehälters mit verkürztem Auslass in einem herkömmlichen Fluidspender |
US11744413B2 (en) | 2021-10-07 | 2023-09-05 | Deb Ip Limited | Dispenser assembly |
US11744412B2 (en) | 2021-10-07 | 2023-09-05 | Deb Ip Limited | Dispenser system |
EP4342997A1 (fr) | 2022-09-26 | 2024-03-27 | OP-Hygiene IP GmbH | Distributeur de fluide pour collecter et analyser un microbiote cutané |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4193004A (en) * | 1978-06-22 | 1980-03-11 | Cobe Laboratories, Inc. | Fluid level monitoring through fluid cell protrusion |
US4311048A (en) * | 1980-02-21 | 1982-01-19 | Trw, Inc. | Liquid level sensing means |
US4440022A (en) * | 1981-10-14 | 1984-04-03 | Smiths Industries Public Limited Company | Liquid-level detection |
US4788444A (en) * | 1985-12-18 | 1988-11-29 | Lucas Electrical Electronics And Systems Limited | Liquid level detection |
US4870292A (en) * | 1988-03-15 | 1989-09-26 | Focal Marine Limited | Fibre optic sensor for liquid level and other parameters |
US6606053B2 (en) * | 1999-08-05 | 2003-08-12 | Vega Grieshaber Kg | Level transmitter |
US6640628B2 (en) * | 2001-01-19 | 2003-11-04 | Endress + Hauser Gmbh + Co. Kg | Level-measuring device |
US20060123901A1 (en) * | 2004-02-13 | 2006-06-15 | Ramus Sebastien A | Electro-optic liquid level sensing system for aircraft beverage brewing |
US20060261083A1 (en) * | 2005-05-20 | 2006-11-23 | Heiner Ophardt | Foaming pump with improved air inlet valve |
US7199388B2 (en) * | 2001-06-12 | 2007-04-03 | Naoyuki Omatoi | Liquid level detecting device |
US20080112830A1 (en) * | 2006-11-09 | 2008-05-15 | Heiner Ophardt | Autoclavable piston guide ring |
US20080121663A1 (en) * | 2006-11-08 | 2008-05-29 | Heiner Ophardt | Piston pump stroke adjustment mechanism |
US20080233012A1 (en) * | 2007-03-21 | 2008-09-25 | Dade Behring Marburg Gmbh | Method for preventing repeat use of disposable articles in analyzers |
US7467548B2 (en) * | 2005-10-14 | 2008-12-23 | Rosemount Tank Radar Ab | Radar level gauge system and coupling |
US20090114679A1 (en) * | 2007-11-07 | 2009-05-07 | Heiner Ophardt | Collapsible bottle and cover |
US20100020322A1 (en) * | 2006-11-30 | 2010-01-28 | Koninklijke Philips Electronics N.V. | Assembly comprising a portable device having fluid-fillable container and a holder |
US20100229973A1 (en) * | 2009-03-10 | 2010-09-16 | Markus Lang | Optical level detector for a beverage machine |
US20110017769A1 (en) * | 2009-07-22 | 2011-01-27 | Heiner Ophardt | Dispenser with palm reader |
US20110107853A1 (en) * | 2009-11-11 | 2011-05-12 | Roche Diagnostics International Ltd | Device and Method for Determining the Fill Level of a Flexible Medicine Reservoir |
US8044844B2 (en) * | 2009-12-14 | 2011-10-25 | Rosemount Tank Radar Ab | Pulsed radar level gauge system and method for energy efficient filling level determination |
US20120314059A1 (en) * | 2011-06-10 | 2012-12-13 | Franz-Josef Hoffmann | Method for dynamically detecting the fill level of a container, container therefor, and system for dynamically monitoring the fill level of a plurality of containers |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3238978A (en) * | 1963-05-20 | 1966-03-08 | Reddi Wip Inc | Device for dispensing a viscous substance |
US3273752A (en) * | 1965-02-11 | 1966-09-20 | Geza E Horeczky | Photo-electric controlled dispenser |
US3677652A (en) * | 1971-06-15 | 1972-07-18 | Gte Sylvania Inc | Fluid analyzer apparatus |
JPS5572825A (en) * | 1978-11-27 | 1980-06-02 | Manabu Murao | Detecting method for liquid level position in container |
US4246489A (en) * | 1979-04-16 | 1981-01-20 | Tokyo Shibaura Electric Co., Ltd. | Liquid level detector for detecting a liquid level when reaching a prescribed height |
JPS6123927A (ja) * | 1984-07-12 | 1986-02-01 | Matsushita Electric Ind Co Ltd | 反射型光学検出装置 |
JPS62127633A (ja) * | 1985-11-28 | 1987-06-09 | Suntory Ltd | 液面測定方法および装置 |
US4938384A (en) * | 1989-01-17 | 1990-07-03 | Sloan Valve Company | Liquid dispenser |
US4967935A (en) * | 1989-05-15 | 1990-11-06 | Celest Salvatore A | Electronically controlled fluid dispenser |
GB2307043A (en) * | 1995-11-07 | 1997-05-14 | Boehringer Ingelheim Ltd | Liquid level determination |
JP3521625B2 (ja) * | 1996-07-10 | 2004-04-19 | ブラザー工業株式会社 | インク残量検知装置 |
US5852946A (en) * | 1996-08-15 | 1998-12-29 | Hewlett-Packard Company | Method and apparatus for detecting fluid level |
US5836482A (en) * | 1997-04-04 | 1998-11-17 | Ophardt; Hermann | Automated fluid dispenser |
US6118134A (en) * | 1997-09-02 | 2000-09-12 | Justak; John F. | Optical mass gauge sensor having an energy per unit area of illumination detection |
SE511605C2 (sv) * | 1997-10-30 | 1999-10-25 | Rolf Westerlund | Nivågivare |
DE19809620C1 (de) * | 1998-03-06 | 1999-09-30 | Lincoln Gmbh | Vorrichtung zur Inhaltskontrolle eines Behälters |
US6264066B1 (en) * | 1999-07-15 | 2001-07-24 | Grand Soft Equipment Co. | Apparatus and method for dispensing a desired portion of frozen product |
US7508312B2 (en) * | 2005-02-04 | 2009-03-24 | Davco Technology, L.L.C. | Apparatus and method for determining a fluid level within an enclosed container |
US7589340B2 (en) * | 2005-03-31 | 2009-09-15 | S.C. Johnson & Son, Inc. | System for detecting a container or contents of the container |
JP2008539078A (ja) * | 2005-04-25 | 2008-11-13 | アドバンスド テクノロジー マテリアルズ,インコーポレイテッド | 空検出機能付きライナ式液体保存・分配システム |
US7753232B2 (en) * | 2005-08-09 | 2010-07-13 | Keyes Denis E | Fluid dispensing apparatus |
EP1818664B1 (fr) * | 2006-02-13 | 2013-05-01 | F.Hoffmann-La Roche Ag | Dispositif de détection de changement de pression dans un canal de liquide dans un dispositif de microdosage |
US7649189B2 (en) * | 2006-12-04 | 2010-01-19 | Honeywell International Inc. | CRDS mirror for normal incidence fiber optic coupling |
US8261950B2 (en) * | 2007-10-22 | 2012-09-11 | Georgia-Pacific Consumer Products Lp | Pumping dispenser |
US20140217123A1 (en) * | 2009-02-27 | 2014-08-07 | Gotohti.Com Inc. | Outer Bore Pump |
US8672187B2 (en) * | 2009-02-27 | 2014-03-18 | Gotohti.Com Inc. | Method and apparatus for generating ozone containing fluid and foam |
US8201707B2 (en) * | 2009-02-27 | 2012-06-19 | Gotohti.Com Inc | Manual fluid dispenser with discharge measurement |
US8733596B2 (en) * | 2009-02-27 | 2014-05-27 | Gotohti.Com Inc. | Ozone foam dispenser |
JP6166551B2 (ja) * | 2013-02-25 | 2017-07-19 | ギガフォトン株式会社 | ターゲット供給装置及び極端紫外光生成装置 |
US20140319181A1 (en) * | 2013-04-30 | 2014-10-30 | E I Du Pont De Nemours And Company | Dispensing vessel having a corrugated secondary container for use in a printing apparatus for depositing a liquid composition on a backplane |
-
2011
- 2011-05-06 CA CA2739362A patent/CA2739362A1/fr not_active Abandoned
-
2012
- 2012-05-02 AU AU2012202564A patent/AU2012202564B2/en active Active
- 2012-05-04 EP EP12166725.7A patent/EP2520910B1/fr active Active
- 2012-05-04 CN CN2012101378441A patent/CN102795383A/zh active Pending
- 2012-05-04 US US13/464,516 patent/US20120279987A1/en not_active Abandoned
-
2014
- 2014-01-29 US US14/167,358 patent/US9027788B2/en active Active
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4193004A (en) * | 1978-06-22 | 1980-03-11 | Cobe Laboratories, Inc. | Fluid level monitoring through fluid cell protrusion |
US4311048A (en) * | 1980-02-21 | 1982-01-19 | Trw, Inc. | Liquid level sensing means |
US4440022A (en) * | 1981-10-14 | 1984-04-03 | Smiths Industries Public Limited Company | Liquid-level detection |
US4788444A (en) * | 1985-12-18 | 1988-11-29 | Lucas Electrical Electronics And Systems Limited | Liquid level detection |
US4870292A (en) * | 1988-03-15 | 1989-09-26 | Focal Marine Limited | Fibre optic sensor for liquid level and other parameters |
US6606053B2 (en) * | 1999-08-05 | 2003-08-12 | Vega Grieshaber Kg | Level transmitter |
US6640628B2 (en) * | 2001-01-19 | 2003-11-04 | Endress + Hauser Gmbh + Co. Kg | Level-measuring device |
US7199388B2 (en) * | 2001-06-12 | 2007-04-03 | Naoyuki Omatoi | Liquid level detecting device |
US20060123901A1 (en) * | 2004-02-13 | 2006-06-15 | Ramus Sebastien A | Electro-optic liquid level sensing system for aircraft beverage brewing |
US20060261083A1 (en) * | 2005-05-20 | 2006-11-23 | Heiner Ophardt | Foaming pump with improved air inlet valve |
US7467548B2 (en) * | 2005-10-14 | 2008-12-23 | Rosemount Tank Radar Ab | Radar level gauge system and coupling |
US20080121663A1 (en) * | 2006-11-08 | 2008-05-29 | Heiner Ophardt | Piston pump stroke adjustment mechanism |
US20080112830A1 (en) * | 2006-11-09 | 2008-05-15 | Heiner Ophardt | Autoclavable piston guide ring |
US20100020322A1 (en) * | 2006-11-30 | 2010-01-28 | Koninklijke Philips Electronics N.V. | Assembly comprising a portable device having fluid-fillable container and a holder |
US20080233012A1 (en) * | 2007-03-21 | 2008-09-25 | Dade Behring Marburg Gmbh | Method for preventing repeat use of disposable articles in analyzers |
US20090114679A1 (en) * | 2007-11-07 | 2009-05-07 | Heiner Ophardt | Collapsible bottle and cover |
US20100229973A1 (en) * | 2009-03-10 | 2010-09-16 | Markus Lang | Optical level detector for a beverage machine |
US20110017769A1 (en) * | 2009-07-22 | 2011-01-27 | Heiner Ophardt | Dispenser with palm reader |
US20110107853A1 (en) * | 2009-11-11 | 2011-05-12 | Roche Diagnostics International Ltd | Device and Method for Determining the Fill Level of a Flexible Medicine Reservoir |
US8044844B2 (en) * | 2009-12-14 | 2011-10-25 | Rosemount Tank Radar Ab | Pulsed radar level gauge system and method for energy efficient filling level determination |
US20120314059A1 (en) * | 2011-06-10 | 2012-12-13 | Franz-Josef Hoffmann | Method for dynamically detecting the fill level of a container, container therefor, and system for dynamically monitoring the fill level of a plurality of containers |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10294092B2 (en) * | 2014-07-13 | 2019-05-21 | Sestra Systems, Inc. | Beverage dispensing system |
US20170096322A1 (en) * | 2014-07-13 | 2017-04-06 | Lev Volftsun | Beverage Dispensing System |
US10791886B2 (en) | 2015-01-23 | 2020-10-06 | Gpcp Ip Holdings Llc | Estimating users of a product dispenser |
US20160249774A1 (en) * | 2015-02-24 | 2016-09-01 | Op-Hygiene Ip Gmbh | Liquid Dispenser With Removable Mobile Dispenser |
US9993119B2 (en) * | 2015-02-24 | 2018-06-12 | Op-Hygiene Ip Gmbh | Liquid dispenser with removable mobile dispenser |
US10368701B2 (en) | 2015-02-24 | 2019-08-06 | Op-Hygiene Ip Gmbh | Reservoir with removable mobile dispenser |
US10624502B2 (en) | 2015-10-15 | 2020-04-21 | Op-Hygiene Ip Gmbh | Cover arrangement for fluid dispenser |
US10098511B2 (en) * | 2015-10-15 | 2018-10-16 | Op-Hygiene Ip Gmbh | Cover arrangement for fluid dispenser |
US10765269B2 (en) | 2015-10-15 | 2020-09-08 | Op-Hygiene Ip Gmbh | Cover arrangement for fluid dispenser |
US20170105584A1 (en) * | 2015-10-15 | 2017-04-20 | Op-Hygiene Ip Gmbh | Cover Arrangement for Fluid Dispenser |
US9939307B2 (en) * | 2016-01-09 | 2018-04-10 | David R. Hall | Optical proximity sensor based toilet with fill tube proximity level sensing |
US11069929B1 (en) * | 2016-05-24 | 2021-07-20 | NDSL, Inc. | Apparatuses and methods for optically monitoring fluid level in a container, such as a battery, using a non-contact optical detector on an outside surface of the container |
US10072962B2 (en) | 2016-07-05 | 2018-09-11 | Ecolab Usa Inc. | Liquid out-of-product alarm system and method |
US11117793B1 (en) * | 2020-07-16 | 2021-09-14 | Pepsico, Inc. | Contactless autofill dispensing |
US11591206B2 (en) | 2020-07-16 | 2023-02-28 | Pepsico, Inc. | Contactless autofill dispensing |
Also Published As
Publication number | Publication date |
---|---|
CA2739362A1 (fr) | 2012-11-06 |
AU2012202564B2 (en) | 2015-05-07 |
CN102795383A (zh) | 2012-11-28 |
US20140144934A1 (en) | 2014-05-29 |
EP2520910A1 (fr) | 2012-11-07 |
EP2520910B1 (fr) | 2019-12-25 |
US9027788B2 (en) | 2015-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9027788B2 (en) | Fluid level gauge | |
US10144027B2 (en) | System for monitoring fluid in a fluid dispenser | |
US8261941B2 (en) | Fluid dispenser | |
US11819147B2 (en) | Food product dispenser and valve | |
US8783511B2 (en) | Manual and touch-free convertible fluid dispenser | |
US10368701B2 (en) | Reservoir with removable mobile dispenser | |
JP5656992B2 (ja) | 流体送出システム | |
EP2125242A1 (fr) | Distributeur automatique | |
CA3185548C (fr) | Distributeur de produit alimentaire fluide sans contact | |
US20230091316A1 (en) | Fluid dispenser and method of use | |
US20220240729A1 (en) | Fluid Dispenser With Sensor for Determining the Volume of Fluid in a Collapsible Container | |
US7882985B2 (en) | Fluid dispenser with sanitary nozzle | |
US11591205B2 (en) | Touchless beverage dispenser valve | |
EP4257248A2 (fr) | Distributeur de liquide avec distributeur mobile amovible | |
WO2014088482A1 (fr) | Récipient comprenant un corps d'indicateur de niveau flottant librement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GOTOHTI.COM INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OPHARDT, HEINER;HOUSE, EDWARD DANIEL;TEZCAN, CUNEYT;AND OTHERS;REEL/FRAME:028173/0163 Effective date: 20120412 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |