Capsule with reduced powder leakage

Patent metadata

Field	Value
Publication number	US-12569403-B2
Application number	US-202017782067-A
Country	US
Kind code	B2
Filing date	Dec 3, 2020
Priority date	Dec 5, 2019
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

The present invention relates to a capsule shell with two parts, a cap and a body, the two parts engage telescopically with each other, the capsule shell is used for storing solid substances in powder or granular form and shows a minimized leakage rate of powder when the capsule shell is filled with the solid substances in powder form and is closed.

First claim

The invention claimed is:

1 . A telescope-type capsule shell, which is CAPSSHELL, with two separate parts, a cap ( 2 ) and a body ( 1 ), wherein the cap ( 2 ) and the body ( 1 ) telescopically engage with each other for closing CAPSSHELL;
the cap ( 2 ) has a closed end, which is CEC ( 20 ), and an open end comprising a rim; the body ( 1 ) has a closed end, which is CEB ( 10 ), and an open end comprising a rim; the cap ( 2 ) comprises in the x direction four consecutive segments: segment of the cap 0 , which is SC 0 , segment of the cap 1 , which is SC 1 , segment of the cap 2 , which is SC 2 and segment of the cap 3 , which is SC 3 ;
SC 0 comprises CEC ( 20 );
SC 1 comprises a closure ring of the cap ( 2 ), which is CRC ( 21 ), in form of a protrusion that extends over the entire circumference of the cap ( 2 );
SC 2 comprises a region of protrusion of the cap ( 2 ), which is RPC ( 22 );
SC 3 comprises the rim of the open end of the cap ( 2 ), which is RIC ( 23 );
the body ( 1 ) comprises in the x direction four consecutive segments: segment of the body 0 , which is SB 0 , segment of the body 1 , which is SB 1 , segment of the body 2 , which is SB 2 and segment of the body 3 , which is SB 3 ;
SB 0 comprises CEB ( 10 );
SB 1 comprises a hollow-cylindrical segment of the body ( 1 ), which is CSB ( 11 );
SB 2 comprises a closure ring of the body ( 1 ), which is CRB ( 12 ), in form of a protrusion that extends over the entire circumference of the body ( 1 );
SB 3 comprises the rim of the open end of the body ( 1 ), which is RIB ( 13 );
in the RPC ( 22 ) there are at least two protrusions, which are PRPC ( 24 ), and which are separated from each other in the circumferential direction of the cap ( 2 ) by parts of RPC ( 22 ); a closed position is the position where the cap ( 2 ) is fully engaged with the body ( 1 ) so that CASPSHELL is closed, in the closed position CRC ( 21 ) engages with CRB ( 12 ); any protrusion of CAPSSHELL extends inwardly into the cavity of the cap ( 2 ) or the body ( 1 ), respectively; the extension of the CAPSSHELL, when the cap ( 2 ) is telescopically engaged with the body ( 1 ) in the direction of its length is designated as x direction; characterized in that in the RIB ( 13 ) there are at least two airvents, which are AV ( 14 ), in form of protrusions, and which are separated from each other and which extend from the edge of the open end of the body ( 1 ), which is EB ( 15 ), to the CRB ( 12 ), but not over the entire length of the CRB into the CSB; and
the RPC ( 22 ) extends over the entire circumference of the cap ( 2 ).

2 . CAPSSHELL according to claim 1 , wherein
the maximum inner diameter of the cap ( 2 ), which is MDC ( 26 ), is the largest inner diameter of the RIC ( 23 ).

3 . CAPSSHELL according to claim 1 , wherein
the maximum outer diameter of the body ( 1 ), which is MDB ( 16 ), is the largest outer diameter of the RIB ( 13 ).

4 . CAPSSHELL according to claim 1 , wherein
PRPC ( 24 ) engage in a preclosed position with CSB ( 11 ).

5 . CAPSSHELL according to claim 1 , wherein
when CAPSSHELL is in a preclosed position, CRC ( 21 ) is on the other side of RIB ( 13 ) with respect to CRB ( 12 ).

6 . CAPSSHELL according to claim 1 , wherein
the PRPCs ( 24 ) are arranged in the RPC ( 22 ) at a distance in x direction from the position of the smallest diameter of the CRC ( 21 ) which distance is larger than the distance in x direction between the EB ( 15 ) and the end of the CRB ( 12 ) adjacent to the CSB ( 11 ).

7 . CAPSSHELL according to claim 1 , wherein
PRPC ( 24 ) engage with CRB ( 12 ) in a preclosed position of CAPSSHELL.

8 . CAPSSHELL according to claim 7 , wherein
when CAPSSHELL is in a preclosed position, CRC ( 21 ) is on the other side of RIB ( 13 ) with respect to CRB ( 12 ).

9 . CAPSSHELL according to claim 1 , wherein
the PRPCs ( 24 ) are arranged in the RPC ( 22 ) at a distance in x direction from the position of the smallest diameter of the CRC ( 21 ) which distance equals the distance in x direction between the EB ( 15 ) and the position of the smallest diameter of the CRB ( 12 ).

10 . CAPSSHELL according to claim 1 , wherein
the shape of a longitudinal cut in x direction of the indentation that the RPC ( 22 ) forms is a curved shape.

11 . CAPSSHELL according to claim 1 , wherein
between the RPC ( 22 ), except for any area formed by the PRPC ( 24 ), and the circumference of the body ( 1 ) with MDB ( 16 ) there occurs no interference during the telescopic engagement of the cap ( 2 ) with the body ( 1 ); interference means that the diameter between two diametrically opposing points of the inner surface of the cap ( 2 ) is smaller than the MDB ( 16 ).

12 . CAPSSHELL according to claim 1 , wherein
between the PRPC ( 24 ) and the circumference of the body ( 1 ) with MDB ( 16 ) there occurs an interference during the telescopic engagement of the cap ( 2 ) with the body ( 1 ) such that PRPC ( 24 ) engages in a preclosed position with CRB.

13 . CAPSSHELL according to claim 1 , wherein
the RPC ( 22 ) has 2, 3, 4, 5, 6, 7, 8, 9 or 10 PRPC ( 24 ).

14 . CAPSSHELL according to claim 1 , wherein
the PRPCs ( 24 ) are placed with equal distance from each other over the circumference of the RPC ( 22 ).

15 . CAPSSHELL according to claim 1 , wherein
all the PRPCs ( 24 ) are identical in shape and depth.

16 . CAPSSHELL according to claim 1 , wherein
the PRPCs ( 24 ) are separated in x direction from the beginning and the end of RPC ( 22 ) by parts of RPC ( 22 ).

17 . CAPSSHELL according to claim 1 , wherein
all the PRPCs ( 24 ) have the same distance from RIC ( 23 ) in x direction.

18 . CAPSSHELL according to claim 1 , wherein
the shape of a longitudinal cut in x direction of the CRC ( 21 ) has an U shape or a V shape.

19 . CAPSSHELL according to claim 1 , wherein
during the telescopic engagement of the cap ( 2 ) with the body ( 1 ) an interference, which is ICRC, occurs between CRC ( 21 ) and RIB ( 13 ) during the telescopic engagement of the cap ( 2 ) with the body ( 1 ).

20 . CAPSSHELL according to claim 1 , wherein
in the closed position, CRC ( 21 ) engages with CRB ( 12 ) with an interference.

21 . CAPSSHELL according to claim 1 , wherein
in the closed position the PRPCs ( 24 ) engage with CSB ( 11 ).

22 . CAPSSHELL according to claim 1 , wherein
the RIB ( 13 ) has two adjacent segments over its length, one segment, which is RIBO ( 130 ), towards the open end of the body ( 1 ) and one segment, which is RIBC ( 131 ), towards the closed end of the body ( 1 ); RIBO ( 130 ) has a taper by which the diameter of RIB ( 13 ) is reduced over the length of the RIBO ( 130 ) towards EB ( 15 ).

23 . CAPSSHELL according to claim 1 , wherein
the RIB ( 13 ) has 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 AVs ( 14 ).

24 . CAPSSHELL according to claim 1 , wherein
the AVs ( 14 ) are placed with equal distance from each other over the circumference of the RIB ( 13 ).

25 . CAPSSHELL according to claim 1 , wherein
the shape and the depth of all of the AVs ( 14 ) are identical.

26 . CAPSSHELL according to claim 1 , wherein
the shape of a longitudinal cut in x direction of the CRB ( 12 ) has an U shape or a V shape.

27 . CAPSSHELL according to claim 1 , wherein
the cap ( 2 ) and the body ( 1 ) of CAPSSHELL are eac

Assignees

• Capsugel Belgium Nv

Inventors

• Buydts Hilde
• Van Den Abeele Kris

Classifications

• A61K9/4816

  Wall or shell material · CPC title

• A61J3/071 Primary

  into the form of telescopically engaged two-piece capsules · CPC title