BIODEGRADABLE STOPPER

Abstract

The invention relates to a biodegradable stopper comprising a casing of rigid biodegradable material, consisting of an annular body with a covered flank, and an internal ring of biodegradable elastic material the total width of which is equal to or smaller than the internal width of the annular body, comprising one or more internal recesses in which one or more portions of the ring fit.

Claims

1. A biodegradable stopper comprising: a casing of a rigid biodegradable material, and the casing comprising an annular body with a covered flank, and an internal ring of biodegradable elastic material the total width (aa) of which is equal to or smaller than the internal width (ac) of the annular body, the annular body comprising one or more internal recesses in which one or more portions of the ring fit, wherein the ring comprises in the internal face thereof air passage channel generated by one or more projections or grooves which extend between the two flanks thereof.

2. The stopper according to claim 1, wherein the internal recess of the casing is annular, having a depth (pr) equal to or smaller than the thickness (ga) of the ring, such that an external perimeter region of the ring fits therein.

3. The stopper according to claim 1, wherein the ring comprises one or more projections in the external face thereof which fit in the internal recesses, which are complementary to said projections.

4. The stopper according to claim 3, wherein one or several projections of the ring are annular projections, the internal recesses of the casing being complementary to said annular projections.

5. The stopper according to claim 1, wherein the biodegradable elastic material of the ring is cork.

6. The stopper according to claim 5, wherein the depth (pr) of the internal recess or recesses of the casing is at least 1 mm and the width (ar) is at least 0.5 mm.

7. The stopper according to claim 5, wherein the dimension in radial direction (ds) of the projection or projections of the internal face of the ring is at least 0.5 mm, equal to the width (as) thereof.

8. The stopper according to claim 5, wherein the depth of the one or the several grooves of the internal face of the ring is of at least 0.5 mm, equal to the width thereof.

9. The stopper according to claim 1, wherein the flank of the ring which is adjacent to the covered side of the casing comprises an external bevelled edge.

10. The stopper according to claim 3, wherein the edge of the annular projections which is adjacent to the covered side of the casing is bevelled.

11. The stopper according to claim 1, wherein the internal edge of the ring which is adjacent to the open side of the casing is rounded or bevelled.

12. The stopper according to claim 1, wherein the flank of the ring which is adjacent to the covered side of the casing is a covered flank.

13. The stopper according to claim 1, wherein the rigid biodegradable material of the casing is wood.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a perspective exploded view of a first embodiment of the biodegradable stopper.

[0015] FIG. 2 is a lower plan view of the biodegradable stopper.

[0016] FIG. 3 is a cross-sectional view of the A-A cut of FIG. 2.

[0017] FIG. 4 is a perspective view of the ring of a second embodiment of the stopper.

[0018] FIG. 5 is a cross-sectional view of a middle plane of the second embodiment of the stopper.

DETAILED DESCRIPTION OF POSSIBLE EMBODIMENTS

[0019] As shown in FIGS. 1 to 3, a first exemplary embodiment of the present biodegradable stopper consists of a wooden casing (1) made up of an annular body (11) with a covered side (12), as well as an internal cork ring (2), also with a covered side (21) and the external edge (22) of which is bevelled, wherein the annular body (11) comprises a perimeter internal recess (13) in which only one portion of the ring (2) fits, given that the thickness (ga) of the ring (2) is greater than the depth (pr) of the recess (13). As can be seen, in this embodiment, the total width (aa) of the ring (2) is equal to that of the recess (13), and therefore is smaller than the internal width (ac) of the annular body (11). In turn, the ring (2) of this embodiment comprises three projections (23) in the internal face thereof, which extend between the two flanks thereof and radially within. In this specific case, the dimension in radial direction (ds) of the projections (23) of the internal face of the ring (2) is 3 mm and the width (as) thereof is 1 cm.

[0020] In a second exemplary embodiment, shown in FIGS. 4 and 5, the biodegradable stopper further consists of a wooden casing (1) made up of an annular body (11) with a covered flank (12), as well as of an internal cork ring (2) with the flanks uncovered. As can be seen, in this exemplary case, the total width of the ring (2′) is equal to the internal width of the annular body (11′), and the flank adjacent to the covered side of the casing (1′) has a bevelled external edge (22′). Likewise, the external diameter (da′) of the ring (2′) is equal to the internal diameter of the casing (1′). In this embodiment, the ring (2′) comprises an annular projection (20′) bevelled at the top and the casing (1′) comprises a perimeter internal recess (13′) in which said annular projection (20′) fits, the width (ar) of the recess (13′) being 1.6 cm. In turn, the ring (2′) of this embodiment comprises in the internal face thereof three grooves (23′) which extend between the two flanks thereof, by way of air passage channel, the width (aa′) of which is of 1 cm and the depth of which is of 3 mm.

[0021] The details, shapes, dimensions and other accessory elements of the present invention may be conveniently replaced by others that are technically equivalent without departing from the scope defined by the claims included below.