Abstract
An assembly for smoking that includes a bowl that has a circumferential wall with a base wall. The base wall has an aperture formed therein. A filter is disposed on said base wall and covers said aperture. A screen is disposed in said bowl. The screen has an areal surface spaced apart from said filter to define an air gap between said areal surface and said filter.
Claims
1. An assembly for smoking comprising: a bowl having a circumferential wall with a base wall, said base wall having an aperture formed therein; a filter disposed on said base wall and covering said aperture; a screen disposed in said bowl, said screen having an areal surface spaced apart from said filter for defining an air gap between said areal surface and said filter.
2. The assembly according to claim 1, wherein said areal surface has legs extending therefrom, said legs have feet to rest against said filter and setting said air gap.
3. The assembly according to claim 2, further comprising a smoking material disposed in said bowl on said screen.
4. The assembly according to claim 3, further comprising a seal sealing said entire bowl.
5. The assembly according to claim 2, wherein said circumferential wall has a draft angle.
6. The assembly according to claim 5, wherein said circumferential wall applies a radially inward pressure against said legs to secure said screen in said bowl.
7. The assembly according to claim 1, further comprising a pipe portion with a pipe bowl, said bowl being disposed in said pipe bowl.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1A is a perspective view of an inner bowl assembly;
[0018] FIG. 1B is a top view of the inner bowl assembly;
[0019] FIG. 1C is a side view of the inner bowl assembly;
[0020] FIG. 1D is a bottom view of the inner bowl assembly;
[0021] FIG. 1E is a section view of the inner bowl assembly taken at section A-A in FIG. 1C;
[0022] FIG. 2A is a plan view of a screen blank;
[0023] FIG. 2B is a bottom view of the screen after tabs have been bent;
[0024] FIG. 2C is a side view of the screen after tabs have been bent;
[0025] FIG. 3A is a bottom view of a filter;
[0026] FIG. 3B is a side view of the filter;
[0027] FIG. 4A is a top view of an inner bowl;
[0028] FIG. 4B is a side view of the inner bowl;
[0029] FIG. 4C is a bottom view of the inner bowl;
[0030] FIG. 5A is a top view of a pipe portion;
[0031] FIG. 5B is a side view of the pipe portion;
[0032] FIG. 5C is an end view of the pipe portion;
[0033] FIG. 5D is a section view of the pipe portion taken at section B-B in FIG. 5A;
[0034] FIG. 5E is a section view of the pipe portion taken at section C-C in FIG. 5B;
[0035] FIG. 6A is a top view of a pipe portion with the inner bowl assembly inserted in the pipe portion;
[0036] FIG. 6B is a section view taken at section D-D in FIG. 6A;
[0037] FIG. 7 is an exploded view of the inner bowl assembly and the pipe portion; and
[0038] FIG. 8 is a view of the inner bowl and the pipe portion.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0039] As shown in FIGS. 1A-1E The system 1 includes an inner bowl assembly 11 that can be pre-filled with the desired smoking substance T. The inner bowl assembly 11 includes a bowl 12, a screen 16, a filter 15 and may include the smoking substance T. The inner bowl assembly 11 can be completed wrapped and sealed in a freshness seal 18, which may be a shrink-wrap type seal. This ensures the freshness of the smoking substance T when such is provided in the assembly 11. It is possible for the inner bowl assembly 11 to be provided without the smoking substance T so that a user can fill and smoke as desired. This provides a user an option for a clean bowl that the user can use with a desired smoking substance and replace at their own discretion. In such instance, the seal 18 is also omitted as there is no product to maintain freshness of.
[0040] The system 1 can include a pipe or pipe portion 17 with a pipe bowl 17b that has a rim 17r. The inner bowl 12 is disposed in the pipe bowl 17b. Furthermore, the pipe bowl 17b can have a substantially straight inner wall in a depth direction thereof and the wall defines a pipe bowl inside diameter 17ID.
[0041] The filter 15 is disposed at the base 12b of the bowl 12 and covers the aperture 14. The filter material may be made of carbon material and possibly biodegradable. As will be seen from the following description the screen 16 is disposed in the bowl 12 with an areal surface 16a spaced apart from the filter 15 so that an air space 20 is provided between the smoking substance and the filter 15. Thus, the air space 20 is upstream of the filter 15 in an air/smoke flow direction of the bowl 12.
[0042] To this end the screen 16 may be formed from a blank 16b of stainless steel, brass, copper or other suitable metal and as is shown in FIG. 2A. The blank 16b may have tabs 16t extending from a circumferential edge of the areal surface 16a of the blank 16b. FIGS. 2B and 2C show that the tabs 16t have been bent at the circumferential edge of the blank 16b to be substantially orthogonal to main screen surface of the screen 16 and define legs 16l. A distal end portion of the tab 16t can be bent inwards so as to be substantially parallel to the areal surface 16a of the screen 16 and respectively define respective feet 16f that rest on the filter 15 when the screen 16 is disposed in the inner bowl. The legs 16l with the feet consequently define a height h of the air space 20 between the areal surface 16a and the filter 15. The filter 15 and the screen construction set an effective depth 12td of a loading volume 19 for the smoking substance T. The effective depth is preferably about one third of the depth 12d of the inner bowl 12. This relationship ensures that the smoking substance T is expended before the lower amount (last to burn) of the smoking substance T accumulates resins and tar of the already burned substance T, which can adversely affect the flavor/taste of the smoking substance T.
[0043] The bowl 12 has a circumferential wall portion 12c with a flange 13. The flange 13 has an underside at an upper edge of the bowl 12. The bowl 12 has a base 12b at a bottom of the cup portion 12c with an aperture 14 formed therein. The circumferential wall 12c may have a taper with a draft or taper angle α. The importance of this construction is discussed below.
[0044] The taper or the circumferential wall 12c may have a dimensional relationship to the formed screen 16 so that the wall 12c provides a radially inward force onto the legs 16l, which helps to hold the screen 16 in place with the feet 16f rested against the filter 15.
[0045] Additionally, the circumferential wall 12c may be sized to cooperate with the pipe bowl inside diameter 17ID. Particularly, it is possible that the circumferential wall has an outer diameter 12OD at position shown in FIG. 8 which is substantially the same as the inner diameter 17ID. The position is at a distance D1 from the base of the inner bowl 12 and is at a position nominally above the areal screen surface 16a with the screen feet 16f positioned against the filter 15. The position of the matched diameters provides for a slight compression above the screen 16 to further hold the screen 16 in place once the inner bowl 12 is inserted into the pipe bowl 17b. The construction also further ensures a good sealing between the inner bowl 12 and the pipe bowl 17b.
[0046] When inserted for use into a pipe portion 17, the aperture 14 is fluidically connected to a passage 17p of the pipe portion 17 and an underside of the flange 13 rests upon the rim 17r when the inner bowl assembly 11 is inserted into the pipe bowl 17b. The flange 13 rests against the rim 17r to indicate that the inner bowl 12 is properly inserted into the pipe bowl 17b and can further ensure a good seal between the pipe bowl 17b and the inner bowl 12.
[0047] The construction results in the air flow to the passage 17p occurring through the smoking substance T and the aperture 14 in the base of the inner bowl 12. The bowl 12 may be formed from a thin sheet of metal that is approximately 25 millimeters in diameter and approximately 15 millimeters deep.
[0048] Alternatively, the screen 16 could be cup-shaped with a flange that rests upon the flange 13 of the bowl 12, where the depth of the cup is less that the distance between a top of the filter 15 and the flange 13 in order to set the height h of the air space 20 and provide the loading volume 19 as disclosed herein.
[0049] As seen in FIG. 3A, the filter 15 is cylindrical and has planar end faces to seat in the base 12b of the bowl 12. The surface area thereof is greater than the size of the aperture 14 so that the combusted smoke to be inhaled passes through the filter medium of the filter 15.
[0050] FIGS. 4A-4C show the inner bowl 12 in the top and bottom views, the flange 13, aperture 14, and circumferential wall are shown. The side view shows the cup and flange diameters.
[0051] FIGS. 5A-6C show the pipe portion 17 with the pipe bowl 17b. The pipe bowl 17b is sized to receive inner bowl 12 and thus is sized with appropriate dimensions as disclosed to properly receive the inner bowl 12 and have the flange 13 rest against the rim 17r of the pipe bowl 17b. The pipe bowl 17b has a depth 17bd to the passage 17p that allows the passage to have the fluidic connection to the aperture 14 of the inner pipe bowl 12. In other words, the depth 17bd is such that the passage opens into the bowl with at least a portion of the passage 17p below the inner bowl base wall 12b when installed in the pipe bowl 17b.
[0052] FIGS. 6A and 6B show the system 1 with the inner bowl assembly 11 disposed in the pipe bowl 17b. The freshness seal 18 has been removed and the flange 13 rests against the rim 17r. The aperture 14 is in fluidic communication with the pipe passage 17p and the smoking substance T can be lit and burned when the user desires to smoke the smoking substance T.
