CA2491592A1 - Spill-resistant bong - Google Patents
Spill-resistant bong Download PDFInfo
- Publication number
- CA2491592A1 CA2491592A1 CA 2491592 CA2491592A CA2491592A1 CA 2491592 A1 CA2491592 A1 CA 2491592A1 CA 2491592 CA2491592 CA 2491592 CA 2491592 A CA2491592 A CA 2491592A CA 2491592 A1 CA2491592 A1 CA 2491592A1
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- smoking pipe
- choke
- conduit
- stem
- 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
- 230000000391 smoking effect Effects 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 abstract description 39
- 239000000779 smoke Substances 0.000 abstract description 12
- 241000601170 Clematis lasiantha Species 0.000 abstract description 11
- 239000011368 organic material Substances 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 210000003813 thumb Anatomy 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 244000045410 Aegopodium podagraria Species 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F1/00—Tobacco pipes
- A24F1/30—Hookahs
Landscapes
- Supply Of Fluid Materials To The Packaging Location (AREA)
Abstract
A spill-resistant liquid filtered smoking pipe or bong of simple construction is provided.
The present invention comprises an elongated pipe with a first end defining a mouthpiece and a second end extending into a chamber containing liquid for filtering smoke, a pipe bowl for burning organic material and hollow pipe stem mounting the bowl, and leading into the chamber at an angle. The present invention employs a centroid design whereby the potential points of escape of liquid are at an angle to the liquid surface such that liquid drains into the chamber. The present invention also provides further design features that enhance spill resistance including an alternative throat design, a valve mechanism on the stem, and a spill resistant choke mechanism, and a recessed choke mechanism.
The present invention comprises an elongated pipe with a first end defining a mouthpiece and a second end extending into a chamber containing liquid for filtering smoke, a pipe bowl for burning organic material and hollow pipe stem mounting the bowl, and leading into the chamber at an angle. The present invention employs a centroid design whereby the potential points of escape of liquid are at an angle to the liquid surface such that liquid drains into the chamber. The present invention also provides further design features that enhance spill resistance including an alternative throat design, a valve mechanism on the stem, and a spill resistant choke mechanism, and a recessed choke mechanism.
Description
Description of the Invention Title: Spill-resistant bong Applicants: Doug Wightman, Mandish Dhanoa and Ryan Willing This invention is in the field of liquid-filtered smoking pipes, commonly known as "bongs". Bongs are typically used to smoke tobacco and other organic material or herbs.
The basic components of prior design bongs are a chamber with a first end seated and sealed on a base and an open second end defining a mouthpiece which is pressed against the mouth of the user, a pipe bowl for burning organic material and a hollow pipe stem mounting the bowl, and leading into the first end of the chamber at an angle, near the base of the bong. Liquid is placed in the lower end of the chamber to a level above the junction of the pipe stem. When a user wishes to use the bong, organic material is placed in the pipe bowl and ignited, and the user places his or her mouth on the mouthpiece and inhales, creating a vacuum. Smoke is drawn down from the ignited organic material in the pipe bowl, through the pipe stem and is bubbled through the water to cool the smoke and remove ash and other contaminants from the smoke.
A
"choke" mechanism, typically a small orifice, may be located medially at the rear of the chamber above the water level which is closed by a user's thumb during the initial stages of use to create the vacuum and is opened by removal of the thumb to release the vacuum and allow the smoke that has accumulated in the chamber to be inhaled by the user. The ~~choke" mechanism can also be accomplished by a removable "pull-stem"
mechanism, wherein the pipe stem is accommodated in a slightly larger diameter tube leading into the chamber at an angle, which allows the user to slide out the pipe stem and pipe bowl from the chamber, thus releasing the vacuum.
Prior bongs fail to adequately prevent liquid spillage during or after use.
For example, spillage may occur through the chamber, through the pipe stem or through the choke mechanism orifice. During transportation, or when accidentally dropped, the liquid contained in the bang may escape from the cylinder or the stem and pull device, and spill over the floor. After use of the bong, the liquid contained in the bong will consist of solid particles that are the result of filtration from the ignited smoking material (e.g. ash and other contaminants), which may stain any surface upon which it is spilled, such as carpets or the user's clothing. The liquid contained in a bong after use typically has a unpleasant odour, which may be deposited on carpets and user's clothing.
Liquid can also escape from the chamber upwards through the pipe stem, wetting the contents of the pipe bowl. Once the contents of the pipe bowl are wet, the organic materials are no longer suitable for smoking and must either be discarded, or left to dehydrate before it can be smoked.
Prior bong designs that provide spill-resistant features employ overly complicated design and/or an excessive number of parts, which complicate use and manufacture.
Prior designs are also difficult to fill with liquid and cannot be disassembled for cleaning or filling. See, for example, U.S. Patent No. 4,241,741 to Cabados and Hansen.
The basic components of prior design bongs are a chamber with a first end seated and sealed on a base and an open second end defining a mouthpiece which is pressed against the mouth of the user, a pipe bowl for burning organic material and a hollow pipe stem mounting the bowl, and leading into the first end of the chamber at an angle, near the base of the bong. Liquid is placed in the lower end of the chamber to a level above the junction of the pipe stem. When a user wishes to use the bong, organic material is placed in the pipe bowl and ignited, and the user places his or her mouth on the mouthpiece and inhales, creating a vacuum. Smoke is drawn down from the ignited organic material in the pipe bowl, through the pipe stem and is bubbled through the water to cool the smoke and remove ash and other contaminants from the smoke.
A
"choke" mechanism, typically a small orifice, may be located medially at the rear of the chamber above the water level which is closed by a user's thumb during the initial stages of use to create the vacuum and is opened by removal of the thumb to release the vacuum and allow the smoke that has accumulated in the chamber to be inhaled by the user. The ~~choke" mechanism can also be accomplished by a removable "pull-stem"
mechanism, wherein the pipe stem is accommodated in a slightly larger diameter tube leading into the chamber at an angle, which allows the user to slide out the pipe stem and pipe bowl from the chamber, thus releasing the vacuum.
Prior bongs fail to adequately prevent liquid spillage during or after use.
For example, spillage may occur through the chamber, through the pipe stem or through the choke mechanism orifice. During transportation, or when accidentally dropped, the liquid contained in the bang may escape from the cylinder or the stem and pull device, and spill over the floor. After use of the bong, the liquid contained in the bong will consist of solid particles that are the result of filtration from the ignited smoking material (e.g. ash and other contaminants), which may stain any surface upon which it is spilled, such as carpets or the user's clothing. The liquid contained in a bong after use typically has a unpleasant odour, which may be deposited on carpets and user's clothing.
Liquid can also escape from the chamber upwards through the pipe stem, wetting the contents of the pipe bowl. Once the contents of the pipe bowl are wet, the organic materials are no longer suitable for smoking and must either be discarded, or left to dehydrate before it can be smoked.
Prior bong designs that provide spill-resistant features employ overly complicated design and/or an excessive number of parts, which complicate use and manufacture.
Prior designs are also difficult to fill with liquid and cannot be disassembled for cleaning or filling. See, for example, U.S. Patent No. 4,241,741 to Cabados and Hansen.
2 The present invention partially overcomes the problem of spillage that is present in prior designs. The present invention provides a bong of simple construction that is also spill-resistant in situations where the bong's orientation is changed. The present invention also provides an advantage over prior spill-resistant bongs that are overly complex by providing a spill-resistant bong of simple design that provides for ease of manufacture and use, and may be disassembled for cleaning and filling.
The present invention includes a throat, comprising an elongated pipe with a first end defining a mouthpiece and a second end extending into a chamber containing liquid for filtering smoke, a pipe bowl for burning organic material, and hollow pipe stem mounting the bowl, and leading into the chamber at an angle. These features are shown in Figure 1.
The principle behind the present invention is that at any orientation, two potential points of escape of the liquid (the stem and the throat shown in Figure 1), are at an angle to the liquid surface such that the liquid drains into the chamber. In the present design, the second end of the throat extends into the chamber, such that the bong may be fully inverted without liquid flowing out of the throat. In the present design, at any orientation the two potential escape points of the liquid (through either the stem or the throat), are either at an angle to the liquid surface such that the liquid drains into the chamber, or if that angle had been exceeded to the point where liquid can drain out of the chamber into the throat, the throat extends deep enough into the chamber such that liquid will not be able to escape through the throat when the orientation is changed.
The present design accomplishes this by ensuring that the distance from any of the escape points to the centroid of the liquid volume is less than that of the liquid surface at any orientation where the angle of the escape path allows leakage. The centroid of the bong is defined as the point in the chamber where equal space exists in any direction, and any plane passing through the centroid would have equal volumes on either side of it. While in use, the stem tip is below the liquid level, which is permissible because the angle to the horizontal is such that liquid drains into the chamber. If the bong is oriented where the angle to the horizontal of the stem is such that liquid would flow out of the chamber, the first end of the stem is located such that it is elevated above the liquid surface.
The same centroid principle applies to the throat. When tipped in any orientation, the liquid will either drain back into the chamber or the liquid level will be below the first end of the throat which extends into the chamber and the contents of the throat have already drained into the chamber. This is depicted in Figure 2.
In another aspect, the present invention provides for a method of containing liquid in a bong by using the apparatus of the present invention.
The present invention provides further design features that enhance spill resistance.
In another aspect, the present invention provides an alternative throat design with a closed first end. Holes spaced around the throat provide airflow from the chamber, to allow the user's inhalation on the mouthpiece to create a vacuum and to allow smoke to
The present invention includes a throat, comprising an elongated pipe with a first end defining a mouthpiece and a second end extending into a chamber containing liquid for filtering smoke, a pipe bowl for burning organic material, and hollow pipe stem mounting the bowl, and leading into the chamber at an angle. These features are shown in Figure 1.
The principle behind the present invention is that at any orientation, two potential points of escape of the liquid (the stem and the throat shown in Figure 1), are at an angle to the liquid surface such that the liquid drains into the chamber. In the present design, the second end of the throat extends into the chamber, such that the bong may be fully inverted without liquid flowing out of the throat. In the present design, at any orientation the two potential escape points of the liquid (through either the stem or the throat), are either at an angle to the liquid surface such that the liquid drains into the chamber, or if that angle had been exceeded to the point where liquid can drain out of the chamber into the throat, the throat extends deep enough into the chamber such that liquid will not be able to escape through the throat when the orientation is changed.
The present design accomplishes this by ensuring that the distance from any of the escape points to the centroid of the liquid volume is less than that of the liquid surface at any orientation where the angle of the escape path allows leakage. The centroid of the bong is defined as the point in the chamber where equal space exists in any direction, and any plane passing through the centroid would have equal volumes on either side of it. While in use, the stem tip is below the liquid level, which is permissible because the angle to the horizontal is such that liquid drains into the chamber. If the bong is oriented where the angle to the horizontal of the stem is such that liquid would flow out of the chamber, the first end of the stem is located such that it is elevated above the liquid surface.
The same centroid principle applies to the throat. When tipped in any orientation, the liquid will either drain back into the chamber or the liquid level will be below the first end of the throat which extends into the chamber and the contents of the throat have already drained into the chamber. This is depicted in Figure 2.
In another aspect, the present invention provides for a method of containing liquid in a bong by using the apparatus of the present invention.
The present invention provides further design features that enhance spill resistance.
In another aspect, the present invention provides an alternative throat design with a closed first end. Holes spaced around the throat provide airflow from the chamber, to allow the user's inhalation on the mouthpiece to create a vacuum and to allow smoke to
3 travel from the chamber to the mouthpiece of the throat and into the user's lungs.
These orifices do not allow do not allow spilling as easily as a single large opening.
These features are depicted in Figure 3 (assembly featuring the novel throat design) and Figure 4 (a close up of the novel throat design).
In a further aspect, the present invention provides a one-way, selectively-biased closed valve at the end of the stem which is extended into the chamber portion of the bong.
The valve will only open when a vacuum is created from the user inhaling from the mouthpiece portion of the throat when the bong is in use. The valve will open due to vacuum pressure exerted by the user and allow smoke to travel from the pipe bowl, through the stem pipe into the chamber and then finally delivered to the user through the mouthpiece of the throat. When inhalation stops, the valve will close and will prevent liquid from entering the pipe stem.
The valve mechanism prevents the aforementioned problems in two ways. Liquid will not escape from the chamber if the bong is shaken or dropped, since only the vacuum created by the user's inhalation can open the valve mechanism. When the bong is not in use, liquid cannot enter the pipe stem. In addition, if the user accidentally blows on the mouthpiece, in the reverse direction intended by the design, thus creating positive pressure (which is a problem which may arise due to a user coughing or laughing when attempting to inhale through the mouthpiece of the throat), the valve is closed preventing liquid to travelling up the stem and wetting the organic material in the pipe bowl. Any backpressure from the user blowing back into the bong will serve to increase the seal between the stem and the valve-flap. Figures 5 and 6 show a simple valve, consisting of a single flap in the opened and closed positions.
In a further aspect, the valve mechanism employs a one-way multiple-flap valve, as depicted in Figures 7 and 8 which shows the multiple valve system in closed and open position. A multiple-flap valve system provides improved protection against leakage due to a stronger seal in the absence of pressure on the face of the valve.
A final area where liquid may escape in a typical bong is through the choke mechanism, typically a small orifice, located medially at the rear of the chamber above the water level which is closed by a user's thumb during the initial stages of use to create the vacuum and is opened by removal of the thumb to release the vacuum and allow the smoke that has accumulated in the chamber to be inhaled by the user.
In a further aspect, the present invention provides choke mechanism valve, controlled by a button or lever and whereby the valve would be closed, unless the button or lever is depressed. This would not allow any liquid to escape from the choke mechanism, since the valve is only opened when engaged by the user.
In a further aspect, the invention provides an elongated pipe placed at the rear of the chamber with a first end extending into the centre of the chamber, and a second end defining an orifice on the surface of the chamber which may be covered by the user's thumb when in use to create a vacuum, and then uncovered to release the vacuum and allow the smoke that has accumulated in the chamber to be inhaled by the user.
These orifices do not allow do not allow spilling as easily as a single large opening.
These features are depicted in Figure 3 (assembly featuring the novel throat design) and Figure 4 (a close up of the novel throat design).
In a further aspect, the present invention provides a one-way, selectively-biased closed valve at the end of the stem which is extended into the chamber portion of the bong.
The valve will only open when a vacuum is created from the user inhaling from the mouthpiece portion of the throat when the bong is in use. The valve will open due to vacuum pressure exerted by the user and allow smoke to travel from the pipe bowl, through the stem pipe into the chamber and then finally delivered to the user through the mouthpiece of the throat. When inhalation stops, the valve will close and will prevent liquid from entering the pipe stem.
The valve mechanism prevents the aforementioned problems in two ways. Liquid will not escape from the chamber if the bong is shaken or dropped, since only the vacuum created by the user's inhalation can open the valve mechanism. When the bong is not in use, liquid cannot enter the pipe stem. In addition, if the user accidentally blows on the mouthpiece, in the reverse direction intended by the design, thus creating positive pressure (which is a problem which may arise due to a user coughing or laughing when attempting to inhale through the mouthpiece of the throat), the valve is closed preventing liquid to travelling up the stem and wetting the organic material in the pipe bowl. Any backpressure from the user blowing back into the bong will serve to increase the seal between the stem and the valve-flap. Figures 5 and 6 show a simple valve, consisting of a single flap in the opened and closed positions.
In a further aspect, the valve mechanism employs a one-way multiple-flap valve, as depicted in Figures 7 and 8 which shows the multiple valve system in closed and open position. A multiple-flap valve system provides improved protection against leakage due to a stronger seal in the absence of pressure on the face of the valve.
A final area where liquid may escape in a typical bong is through the choke mechanism, typically a small orifice, located medially at the rear of the chamber above the water level which is closed by a user's thumb during the initial stages of use to create the vacuum and is opened by removal of the thumb to release the vacuum and allow the smoke that has accumulated in the chamber to be inhaled by the user.
In a further aspect, the present invention provides choke mechanism valve, controlled by a button or lever and whereby the valve would be closed, unless the button or lever is depressed. This would not allow any liquid to escape from the choke mechanism, since the valve is only opened when engaged by the user.
In a further aspect, the invention provides an elongated pipe placed at the rear of the chamber with a first end extending into the centre of the chamber, and a second end defining an orifice on the surface of the chamber which may be covered by the user's thumb when in use to create a vacuum, and then uncovered to release the vacuum and allow the smoke that has accumulated in the chamber to be inhaled by the user.
4 In a further aspect, the choke mechanism orifice is located medially at the rear of the throat.
A chamber that may be disassembled offers many advantages. It offers the advantages of ease of filling or removing liquid from the chamber. The chamber of a bong often accumulates grit and residue, which can be hard to remove. Another advantage is the ease of cleaning the chamber of the bong. A disassembled chamber can be cleaned after each use, or even placed in a dishwasher. Another advantage is that of a chamber that may be opened is that the chamber can accommodate ice cubes. A user may optionally add ice (in addition to the liquid) to the chamber to cool the smoke passing through the chamber en route to the throat, making for a more refreshing and soothing smoking experience.
In a further aspect, the present invention provides a bong, with a chamber that can be disassembled. Preferred embodiment provides a threading mechanism and washer seal that is liquid-proof, as depicted in Figure 9 and Figure 10. The person skilled in the art will appreciate that there are other means of attaining this feature.
The present invention has another embodiment as depicted in Figure 11.
A person skilled in the art would appreciate that numerous modifications of the present invention are possible in light of the above description.
A chamber that may be disassembled offers many advantages. It offers the advantages of ease of filling or removing liquid from the chamber. The chamber of a bong often accumulates grit and residue, which can be hard to remove. Another advantage is the ease of cleaning the chamber of the bong. A disassembled chamber can be cleaned after each use, or even placed in a dishwasher. Another advantage is that of a chamber that may be opened is that the chamber can accommodate ice cubes. A user may optionally add ice (in addition to the liquid) to the chamber to cool the smoke passing through the chamber en route to the throat, making for a more refreshing and soothing smoking experience.
In a further aspect, the present invention provides a bong, with a chamber that can be disassembled. Preferred embodiment provides a threading mechanism and washer seal that is liquid-proof, as depicted in Figure 9 and Figure 10. The person skilled in the art will appreciate that there are other means of attaining this feature.
The present invention has another embodiment as depicted in Figure 11.
A person skilled in the art would appreciate that numerous modifications of the present invention are possible in light of the above description.
Claims (20)
1. A smoking pipe comprising a throat, a chamber and a stem, wherein:
said chamber comprises at least one chamber wall, an inside and an outside;
said throat comprises a conduit having a first end and a second end, wherein the first end of the conduit comprises a mouthpiece, the conduit extends through one of the at least one chamber wall and into the inside of the chamber and the second end of the conduit is disposed in the inside of the chamber at a distance from the at least one chamber wall;
said stem comprises a first end and a second end; and said stem extends through one of the at least one chamber wall and into the inside of the chamber.
said chamber comprises at least one chamber wall, an inside and an outside;
said throat comprises a conduit having a first end and a second end, wherein the first end of the conduit comprises a mouthpiece, the conduit extends through one of the at least one chamber wall and into the inside of the chamber and the second end of the conduit is disposed in the inside of the chamber at a distance from the at least one chamber wall;
said stem comprises a first end and a second end; and said stem extends through one of the at least one chamber wall and into the inside of the chamber.
2. The smoking pipe as defined in claim 1, wherein the first end of the stem is disposed outside of the chamber, and wherein said smoking pipe further comprises a bowl attached to the first end of the stem.
3. The smoking pipe as defined in claim 1, wherein said smoking pipe further comprises a choke mechanism comprising a choke orifice, wherein the choke orifice is disposed on one of the at least one chamber wall.
4. The smoking pipe as defined in claim 3, wherein the choke orifice is generally spaced apart from the stem.
5. The smoking pipe as defined in any one of claims 1 to 4, wherein the second end of the conduit is closed and at least one conduit orifice is disposed on the conduit in general proximity to the second end of the conduit.
6. The smoking pipe as defined in claim 5 or 6, wherein the at least one conduit orifice comprises a plurality of orifices spaced apart circumferentially on the conduit.
7. The smoking pipe as defined in any one of claims 1 to 6, wherein the stem is sealed by a valve mechanism.
8. The smoking pipe as defined in claim 7, wherein the valve mechanism is disposed on the second end of the stem.
9. The smoking pipe as defined in claim 7 or 8, wherein the valve mechanism comprises a single-flap valve.
10. The smoking pipe as defined in claim 7 or 8, wherein the valve mechanism comprises a multi-flap valve.
11. The smoking pipe as defined in claim 3 or 4, wherein the choke mechanism further comprises a choke valve.
12. The smoking pipe as defined in claim 11, wherein the choke valve is controlled by a button.
13. The smoking pipe as defined in claim 11, wherein the choke valve is controlled by a lever mechanism.
14. The smoking pipe as defined in any one of claims 1 to 13, wherein the chamber comprises a bottom element and a top element.
15. The smoking pipe as defined in claim 14, wherein the bottom element and the top element are removably fixed by a threading means.
16. The smoking pipe as defined in claim 14 or 15, wherein the bottom element and the top element are sealed by a washer seal.
17. The smoking pipe as defined in any one of claims 3, 4 and 11 to 13, wherein the choke mechanism further comprises a choke conduit.
18. The smoking pipe as defined in claim 17, wherein the choke conduit comprises a first end and a second end, wherein the first end of the choke conduit is disposed inside of the chamber.
19. The smoking pipe as defined in claim 18, wherein the second end of the choke conduit coincides with said orifice of said choke mechanism.
20. Use of the smoking pipe as defined in any one of claims 1 to 19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2491592 CA2491592A1 (en) | 2004-12-22 | 2004-12-22 | Spill-resistant bong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2491592 CA2491592A1 (en) | 2004-12-22 | 2004-12-22 | Spill-resistant bong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2491592A1 true CA2491592A1 (en) | 2006-06-22 |
Family
ID=36636718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2491592 Abandoned CA2491592A1 (en) | 2004-12-22 | 2004-12-22 | Spill-resistant bong |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2491592A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2430858A (en) * | 2005-10-06 | 2007-04-11 | John Russon | Spill-proof smoking implement |
-
2004
- 2004-12-22 CA CA 2491592 patent/CA2491592A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2430858A (en) * | 2005-10-06 | 2007-04-11 | John Russon | Spill-proof smoking implement |
| GB2430858B (en) * | 2005-10-06 | 2011-04-27 | John Russon | Spill-proof smoking implement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |