CA1312579C - Device suitable for use as a dual-chambered can - Google Patents
Device suitable for use as a dual-chambered canInfo
- Publication number
- CA1312579C CA1312579C CA000578989A CA578989A CA1312579C CA 1312579 C CA1312579 C CA 1312579C CA 000578989 A CA000578989 A CA 000578989A CA 578989 A CA578989 A CA 578989A CA 1312579 C CA1312579 C CA 1312579C
- Authority
- CA
- Canada
- Prior art keywords
- handle
- chamber
- zone
- root
- chambers
- 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.)
- Expired - Fee Related
Links
Abstract
ABSTRACT
A device suitable for use as a single-piece dual-chambered can of synthetic material, has a larger chamber for holding gasoline, a smaller chamber for holding oil, and a thin connecting member arranged between said chambers in the separation plane between the two said chambers and forming part of said chambers. Said device has on its upper side a handle straddling the separation plane and possessing a root that begins on the upper side of said larger chamber. The said connecting member is non-linear along a considerable section of its length. The deviation from the linear is many times greater than the thickness of the connecting member.
A device suitable for use as a single-piece dual-chambered can of synthetic material, has a larger chamber for holding gasoline, a smaller chamber for holding oil, and a thin connecting member arranged between said chambers in the separation plane between the two said chambers and forming part of said chambers. Said device has on its upper side a handle straddling the separation plane and possessing a root that begins on the upper side of said larger chamber. The said connecting member is non-linear along a considerable section of its length. The deviation from the linear is many times greater than the thickness of the connecting member.
Description
"`` ` I 3 1 2579 ~ lICl~ SDI~ABLE FO~ ~SE AS A DUAL-CHA~E$~ED CAN
The present invention relates to a device suitable for use as a dual chambered can Such a device is known from German Patent 21 49 569. Such cans are widely used by forest workers who operate chain saws powered by two-stroke engines. In practice, the two-stroke mixture is stored in the larger 5 litre chamber, while the smaller 2.5 litre chamber contains the chain lubricant. Clearly, this type of can can have many other use~. ~he disadvantage~ of this construction, which dates ~rom 197~, are the following:
1. The thickness of connecting member 28 is so~ewhat less than doubl~ the thickness of the material used in construction, i.e, 5mm. Such meagre dimensions do not provide the thickness required to separate both chambers. It must also be remembered that such cans, being produced by the blow-mold process, are rather less solidly constructed than injection-molded containers.
The present invention relates to a device suitable for use as a dual chambered can Such a device is known from German Patent 21 49 569. Such cans are widely used by forest workers who operate chain saws powered by two-stroke engines. In practice, the two-stroke mixture is stored in the larger 5 litre chamber, while the smaller 2.5 litre chamber contains the chain lubricant. Clearly, this type of can can have many other use~. ~he disadvantage~ of this construction, which dates ~rom 197~, are the following:
1. The thickness of connecting member 28 is so~ewhat less than doubl~ the thickness of the material used in construction, i.e, 5mm. Such meagre dimensions do not provide the thickness required to separate both chambers. It must also be remembered that such cans, being produced by the blow-mold process, are rather less solidly constructed than injection-molded containers.
2. In order to remedy the instability of the connecting member, handle 3 was provided with root~, of which the fist was a~fixed to the larger chamber, the second to the larger and smaller chambers and the third solely to the smaller chamber. This arrangement wastes .,, ,~
S, 2 131~57~
material, since one need use only the handle that is situated over the centre of gravity~
S, 2 131~57~
material, since one need use only the handle that is situated over the centre of gravity~
3. Blow molding of this handle str~cture requires advanced techniques and relatively complicated blowing molds.
4. The above-mentioned second handle raot limits the ~inger opening in the handle to a relatively small size, to the detriment of the user attempting to grasp the can, particularly if gloves are worn. There exists i~ Canada, ~or instance, a polar glove fashioned without individual finger poalcets; such a glove could not possibly ~it through a handle opening of this size.
5. The handle, also being blo~-molded, features a cavity.
~: Were no constriction point made in the handle, the contents of the smaller chamber could be permitted to mix with the contents of the larger chamber, which would be inappropriate. The existence of such a constriction point would also weaken the handle, given 2~ the premise that a pipe composed of a given ~uantity o~ material would exhibit the greatest strength i~ its load bearing capacity were uncompromised in all directions.
!
3 ~ 3 1 2579 6. It is not possible in this case to use the handle cavity for returning, during pouring, air to t~e rear of the larger chamber.
~: Were no constriction point made in the handle, the contents of the smaller chamber could be permitted to mix with the contents of the larger chamber, which would be inappropriate. The existence of such a constriction point would also weaken the handle, given 2~ the premise that a pipe composed of a given ~uantity o~ material would exhibit the greatest strength i~ its load bearing capacity were uncompromised in all directions.
!
3 ~ 3 1 2579 6. It is not possible in this case to use the handle cavity for returning, during pouring, air to t~e rear of the larger chamber.
7~ The rectilinear construction of the connecting member i~poses at least upon the smaller chambar a somewhat flat rectangular shape, which hals not proved to be especially resistant in impact tests.
The object o~ the present invention is to identi~y a means of retaining the dual-chamber principle while simplifying the method of connecting the smaller chamber to the larger chamber.
In a broad aspect, the present invention relates to a device suita~le for use as a one-piece dual-chambered can o~ blow-molding synthetic material said devic~ haviny a larger chamber ~or holding gasoline, a smaller chamber f~r holding oil~ a separation plane between said chambers, a thin connecting member arranged between said chambers in said separation plane and forming part of said chambers, an upper side on said larger chamber and a handle straddling said separation plane, said handle having a handle root that begins on ~aid upper side o~
said larger chamber, wherein; (a) said c~nnacting member is arranged outside o~ said handle; ~h) said smaller cha~ber has an upper zone that extends cupola-like at least pa~tway up the height o~ said handle; (c) said handle has 2 second handle root havin~ a bulge that extends very close to said upper cupola-like zone of said ~maller chamber; (d) said second handle root emerges from said upper side of said larger chamber adjacent said upper cupola-like ~one of said s~aller ch~mber; (e~ said device has a floor zone on both of said chambers, and viewed from the side, said connecting memb~r desaribes a curve from said floor zone to a zone situated between said second handle root and said upper cupola-like zone of said smaller chamber; (~) fiaid curve ~omprises a first longer section that extends upward from said floor zone and a second shorter section that rises at a bend between said first and second sections to form an obtuse angle with said first section; and ~g) said second handle root is considerably thicker in the zone of said second section than said first handle root, and said second handle root protrudes in the manner o~ a chin over said smaller chamber and tnen curves inwardly.
The nonlinearity of the connecting member has been welded to the cupola shape of the upper zone of the smaller chamber to provide impact resistance in the event oE dropping. The handle is solidly joined to the connecting member, even at the point where the two chambers are no longer joined together. Such a shape furthermore facilitat~s the arran~ement of a handle having a large grip opening. The shape of the connecting member, being bowed and dome-like, affords resistance against dropping and gas pressure buildup. Also, the production of the thin blow-molded wall and the subsequent cold drilling of the holes therein has been facilitated by the present invention. This procedure would not be as simple were the connecting member bent throughout.
Furthermore, the second handle root is bett~r to absorb the forces transferred to it from the connecting member. This condition, which applies especially to the upper cupola-shaped zone of the smaller chamber, also permits the second handle root to absor~ the force of blows upon it.
Furthermore, in the present invention, there are uninterrupted points of contact between the two containers, which improves production, optimizes wall thickness, enhances load bearing capacity etc.
The present invention shall next be described in greater detail by means of drawings of a preferred embodiment thereo~. Shown are:
Figure 1 ~- a side view of the proposed can;
Figure 2 -- a view as indicated by arrow 2 of Figure l;
Figure 3 -- a view as indicated by arrow 3 of Figure l;
Figure 4 -- a view as indicated by arrow 4 of Figure l;
Figure S -- a view as indicated by arrow 5 of Figure, 1.
A dual-chambered can 11 is blow-molded from a synthetic material.
The larger of its two chambers 12 holds 5 litres of li~uidl whereas the smaller chamber 13 holds 2.5 litres. ~he larger chamber 12 possesses, in accordance with Figure 1, a le~t-~acing, integrally-produced threaded neck 14, and the smaller chamber has a right facing integrally-produced threaded neck 16.
Emerging from the upper side of chamber 12 is a handle 17, having in the zone near threaded neck ~4 a smaller handle root 18, as well as a larger handle root 20. The wall thickness of the synthetic material lies between 3 and 4 mm. The section of wall located between lines 19 and 21 is, with the exception of the bowed-out portions 22 (which shall not concern us here) -- in th~ form of a straight line that runs parallel to the datum plane of Figure 1, -or, rather, perpendicular to the surface upon which the dual chambered can 11 naturally sits.
Chamber 12 exhibits below line 21, the ~orm of a ~latj downwardly-oriented support dome 23 featuring large radii. Support dome 24 of the smaller chamber ~3 also features large radii. ~he radii, in both cases, extend to the oval support surface 26 of the larger chamber 12 and up to the more rectangular support surface 27 of the smaller chamber 13.
As Fig. 3 in particular demonstrates, the outline of smaller chamber 12 is rectangular with highly rounded corners, whereas larger chamber 13 is in this view elongated rectangular/oval with well-rounded corner radii. Such radii are in this respect larger in the larger chamber 12 than the corresponding radii of the smaller chamber 13, which prevents the vapour pressure developing in chamber 12 from significantly changing the basic shape of the can. The individual radii are shown in the drawing.
The central zone of the support surfaces, represented by 8 and 29 is depressed inwardly, in order to prevent the bottom of the can from resting directly on the ground, if the latter is fairly even.
The central zones of the can bottom 28, 29/ are reinforced either by wide cross members 31 or by one cross member 32. To the left and right of a medial plane of symmetry, cross members 31 and 32 are intersected by longitudinal members 34, 36 whose width is equal to that of such cross members. Chamber 12 rises above line 19 to merge into a large-radius cupola 37, which curves upward to the left to support threaded neck 14. The first handle root 18, which begins a short distance to the right of threaded neck 14, i5 considerably narrower than khe width o~ threaded neck 14, maintains this cross section alony practically the entire length of handle opening 38, and then widens so that the width of the second handle root 20 exceeds the practically 40mm diameter of threaded neck 16.
As Fig. 1 illustrates, handle root 20 extends to the right with a protuding chin 39 into a zone that partially ovPrlaps chamber 13.
Two thirds of the length of handle 17 lying to the right-hand side has a shape not unlike that of a saxophone. Handle opening 38 is large enough to accomodate winter gloves. The middle of handle 17 sits more or less over the common centre of gravity of dual-chambered can 11, when both chambers 12 and 13 are filled with liquid.
Chamber 13 rises above line 19 to form a cupola 41 having very :`
large radii and supporting threaded neck 16. The left-hand 20ne of cupola 41 follows the under-contour of chin 39.
Chambers 12 and 13 are joined together by means of a connectin~
member 42 that is approximately 5 mm thick and comprises a first linear section 43 that begins a short distance below line 21 and follows perpendicular madial plane of symmetry 33 to the top. The thickness of linear section 43 -- like the entire connscting member 42, 3-4 mm -- merges at a 45 bend 44 into a shorter linear section 46 that iB basically equal in length to the underside o~
chin 39. Because cupola 41 con~orms closely to chin 39, se~tion 46 has only to be a few millimeters thick. Component 46 merges at the top into a delta 47, resembling a small fishtail.
The non-linearity of connecting member 42 does not necessarily have to be produced in the manner described in the embodiment example given. In the example described, the ratio o~ long sections to short sections would be about 4:7. This ratio could vary upwardly or downwardly by 10%.
The non-linearity of connecting member 42 can also be achieved by bending connecting member 42 into an arc as indicated by the dotted line 48.
The object o~ the present invention is to identi~y a means of retaining the dual-chamber principle while simplifying the method of connecting the smaller chamber to the larger chamber.
In a broad aspect, the present invention relates to a device suita~le for use as a one-piece dual-chambered can o~ blow-molding synthetic material said devic~ haviny a larger chamber ~or holding gasoline, a smaller chamber f~r holding oil~ a separation plane between said chambers, a thin connecting member arranged between said chambers in said separation plane and forming part of said chambers, an upper side on said larger chamber and a handle straddling said separation plane, said handle having a handle root that begins on ~aid upper side o~
said larger chamber, wherein; (a) said c~nnacting member is arranged outside o~ said handle; ~h) said smaller cha~ber has an upper zone that extends cupola-like at least pa~tway up the height o~ said handle; (c) said handle has 2 second handle root havin~ a bulge that extends very close to said upper cupola-like zone of said ~maller chamber; (d) said second handle root emerges from said upper side of said larger chamber adjacent said upper cupola-like ~one of said s~aller ch~mber; (e~ said device has a floor zone on both of said chambers, and viewed from the side, said connecting memb~r desaribes a curve from said floor zone to a zone situated between said second handle root and said upper cupola-like zone of said smaller chamber; (~) fiaid curve ~omprises a first longer section that extends upward from said floor zone and a second shorter section that rises at a bend between said first and second sections to form an obtuse angle with said first section; and ~g) said second handle root is considerably thicker in the zone of said second section than said first handle root, and said second handle root protrudes in the manner o~ a chin over said smaller chamber and tnen curves inwardly.
The nonlinearity of the connecting member has been welded to the cupola shape of the upper zone of the smaller chamber to provide impact resistance in the event oE dropping. The handle is solidly joined to the connecting member, even at the point where the two chambers are no longer joined together. Such a shape furthermore facilitat~s the arran~ement of a handle having a large grip opening. The shape of the connecting member, being bowed and dome-like, affords resistance against dropping and gas pressure buildup. Also, the production of the thin blow-molded wall and the subsequent cold drilling of the holes therein has been facilitated by the present invention. This procedure would not be as simple were the connecting member bent throughout.
Furthermore, the second handle root is bett~r to absorb the forces transferred to it from the connecting member. This condition, which applies especially to the upper cupola-shaped zone of the smaller chamber, also permits the second handle root to absor~ the force of blows upon it.
Furthermore, in the present invention, there are uninterrupted points of contact between the two containers, which improves production, optimizes wall thickness, enhances load bearing capacity etc.
The present invention shall next be described in greater detail by means of drawings of a preferred embodiment thereo~. Shown are:
Figure 1 ~- a side view of the proposed can;
Figure 2 -- a view as indicated by arrow 2 of Figure l;
Figure 3 -- a view as indicated by arrow 3 of Figure l;
Figure 4 -- a view as indicated by arrow 4 of Figure l;
Figure S -- a view as indicated by arrow 5 of Figure, 1.
A dual-chambered can 11 is blow-molded from a synthetic material.
The larger of its two chambers 12 holds 5 litres of li~uidl whereas the smaller chamber 13 holds 2.5 litres. ~he larger chamber 12 possesses, in accordance with Figure 1, a le~t-~acing, integrally-produced threaded neck 14, and the smaller chamber has a right facing integrally-produced threaded neck 16.
Emerging from the upper side of chamber 12 is a handle 17, having in the zone near threaded neck ~4 a smaller handle root 18, as well as a larger handle root 20. The wall thickness of the synthetic material lies between 3 and 4 mm. The section of wall located between lines 19 and 21 is, with the exception of the bowed-out portions 22 (which shall not concern us here) -- in th~ form of a straight line that runs parallel to the datum plane of Figure 1, -or, rather, perpendicular to the surface upon which the dual chambered can 11 naturally sits.
Chamber 12 exhibits below line 21, the ~orm of a ~latj downwardly-oriented support dome 23 featuring large radii. Support dome 24 of the smaller chamber ~3 also features large radii. ~he radii, in both cases, extend to the oval support surface 26 of the larger chamber 12 and up to the more rectangular support surface 27 of the smaller chamber 13.
As Fig. 3 in particular demonstrates, the outline of smaller chamber 12 is rectangular with highly rounded corners, whereas larger chamber 13 is in this view elongated rectangular/oval with well-rounded corner radii. Such radii are in this respect larger in the larger chamber 12 than the corresponding radii of the smaller chamber 13, which prevents the vapour pressure developing in chamber 12 from significantly changing the basic shape of the can. The individual radii are shown in the drawing.
The central zone of the support surfaces, represented by 8 and 29 is depressed inwardly, in order to prevent the bottom of the can from resting directly on the ground, if the latter is fairly even.
The central zones of the can bottom 28, 29/ are reinforced either by wide cross members 31 or by one cross member 32. To the left and right of a medial plane of symmetry, cross members 31 and 32 are intersected by longitudinal members 34, 36 whose width is equal to that of such cross members. Chamber 12 rises above line 19 to merge into a large-radius cupola 37, which curves upward to the left to support threaded neck 14. The first handle root 18, which begins a short distance to the right of threaded neck 14, i5 considerably narrower than khe width o~ threaded neck 14, maintains this cross section alony practically the entire length of handle opening 38, and then widens so that the width of the second handle root 20 exceeds the practically 40mm diameter of threaded neck 16.
As Fig. 1 illustrates, handle root 20 extends to the right with a protuding chin 39 into a zone that partially ovPrlaps chamber 13.
Two thirds of the length of handle 17 lying to the right-hand side has a shape not unlike that of a saxophone. Handle opening 38 is large enough to accomodate winter gloves. The middle of handle 17 sits more or less over the common centre of gravity of dual-chambered can 11, when both chambers 12 and 13 are filled with liquid.
Chamber 13 rises above line 19 to form a cupola 41 having very :`
large radii and supporting threaded neck 16. The left-hand 20ne of cupola 41 follows the under-contour of chin 39.
Chambers 12 and 13 are joined together by means of a connectin~
member 42 that is approximately 5 mm thick and comprises a first linear section 43 that begins a short distance below line 21 and follows perpendicular madial plane of symmetry 33 to the top. The thickness of linear section 43 -- like the entire connscting member 42, 3-4 mm -- merges at a 45 bend 44 into a shorter linear section 46 that iB basically equal in length to the underside o~
chin 39. Because cupola 41 con~orms closely to chin 39, se~tion 46 has only to be a few millimeters thick. Component 46 merges at the top into a delta 47, resembling a small fishtail.
The non-linearity of connecting member 42 does not necessarily have to be produced in the manner described in the embodiment example given. In the example described, the ratio o~ long sections to short sections would be about 4:7. This ratio could vary upwardly or downwardly by 10%.
The non-linearity of connecting member 42 can also be achieved by bending connecting member 42 into an arc as indicated by the dotted line 48.
Claims (7)
1. Device suitable for use as a one-piece dual-chambered can of blow-molding synthetic material said device having a larger chamber for holding gasoline, a smaller chamber for holding oil, a separation plane between said chambers, a thin connecting member arranged between said chambers in said separation plane and forming part of said chambers, an upper side on said larger chamber and a handle straddling said separation plane, said handle having a handle root that begins on said upper side of said larger chamber, wherein:
(a) said connecting member is arranged outside of said handle;
(b) said smaller chamber has an upper zone that extends cupola-like at least partway up the height of said handle;
(c) said handle has a second handle root having a bulge that extends very close to said upper cupola-like zone of said smaller chamber;
(d) said second handle root emerges from said upper side of said larger chamber adjacent said upper cupola-like zone of said smaller chamber;
(e) said device has a floor zone on both of said chambers, and viewed from the side, said connecting member describes a curve from said floor zone to a zone situated between said second handle root and said upper cupola-like zone of said smaller chamber;
(f) said curve comprises a first longer section that extends upward from said floor zone and a second shorter section that rises at a bend between said first and second sections to form an obtuse angle with said first section; and (g) said second handle root is considerably thicker in the zone of said second section than said first handle root, and said second handle root protrudes in the manner of a chin over said smaller chamber and then curves inwardly.
(a) said connecting member is arranged outside of said handle;
(b) said smaller chamber has an upper zone that extends cupola-like at least partway up the height of said handle;
(c) said handle has a second handle root having a bulge that extends very close to said upper cupola-like zone of said smaller chamber;
(d) said second handle root emerges from said upper side of said larger chamber adjacent said upper cupola-like zone of said smaller chamber;
(e) said device has a floor zone on both of said chambers, and viewed from the side, said connecting member describes a curve from said floor zone to a zone situated between said second handle root and said upper cupola-like zone of said smaller chamber;
(f) said curve comprises a first longer section that extends upward from said floor zone and a second shorter section that rises at a bend between said first and second sections to form an obtuse angle with said first section; and (g) said second handle root is considerably thicker in the zone of said second section than said first handle root, and said second handle root protrudes in the manner of a chin over said smaller chamber and then curves inwardly.
2. Device in accordance with Claim 1, wherein said first and second sections are at least essentially linear.
3. Device in accordance with Claim 1, wherein both of said first and second sections are linear.
4. Device in accordance with Claim 1, wherein said handle is hollow and has a lumen that connects exclusively to said larger chamber.
5. Device in accordance with Claim 1, wherein said handle has an upper cross member and a second handle root that together possess a saxophone-like shape.
6. Device in accordance with one of Claims 1, 2, or 3, wherein said device has a radii that can vary minus/plus 30%.
7. Device in accordance with Claim 4 or 5, wherein said device has a radii that can vary minus/plus 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000578989A CA1312579C (en) | 1988-09-30 | 1988-09-30 | Device suitable for use as a dual-chambered can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000578989A CA1312579C (en) | 1988-09-30 | 1988-09-30 | Device suitable for use as a dual-chambered can |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1312579C true CA1312579C (en) | 1993-01-12 |
Family
ID=4138828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000578989A Expired - Fee Related CA1312579C (en) | 1988-09-30 | 1988-09-30 | Device suitable for use as a dual-chambered can |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1312579C (en) |
-
1988
- 1988-09-30 CA CA000578989A patent/CA1312579C/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |