Screw cap lidded container

Patent metadata

Field	Value
Publication number	US-9776771-B2
Application number	US-201414553021-A
Country	US
Kind code	B2
Filing date	Nov 25, 2014
Priority date	Nov 26, 2013
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A screw cap lidded container for laboratory use includes a container body defining a chamber, a tubular section of the container body that is connected at the rear to the chamber and has a container opening in the front and an external thread on the outer periphery of the tubular section. There is a circumferential first sealing surface on the tubular section and at least one first projection, which projects from the container body at a peripheral position of the tubular section, and a screw cap having an internal thread on the inner periphery that can be screwed onto the external thread with thread play, a second sealing surface on the screw cap can be brought into sealing contact with the first sealing surface, and at least one second projection, which projects at a peripheral position of the screw cap.

First claim

The invention claimed is:

1. A screw cap lidded container for laboratory use comprising:
a container body ( 2 ) defining a chamber ( 23 ),
a tubular section ( 14 ) of the container body ( 2 ) that is connected at the rear to the chamber ( 23 ) and has a container opening ( 21 ) in the front,
an external thread ( 16 ) on the outer periphery of the tubular section ( 14 ),
a circumferential first sealing surface ( 22 ) on the tubular section ( 14 ),
at least one first projection ( 19 , 20 ), which projects from the container body ( 2 ) at a peripheral position of the tubular section ( 14 ),
a screw cap ( 26 ),
an internal thread ( 34 ) on the inner periphery ( 33 ) of the screw cap ( 26 ) that can be screwed onto the external thread ( 16 ) with thread play,
a circumferential second sealing surface ( 36 ) on the screw cap ( 26 ), that by screwing the screw cap ( 26 ) tightly onto the tubular section ( 14 ) can be brought into sealing contact with the first sealing surface ( 22 ), and
at least one second projection ( 38 , 39 ), which projects from the screw cap ( 26 ) at a peripheral position of the screw cap ( 26 ),
wherein the first projection ( 19 , 20 ) on a front side, in a circular cylindrical cut surface about a central axis of the tubular section ( 14 ) has an increasing shoulder towards the external thread ( 16 ), and/or the second projection ( 38 , 39 ) on a back side in a circular cylindrical cut surface about a central axis of the screw cap ( 26 ) has an increasing shoulder towards opening ( 19 ), wherein when screwing the screw cap ( 26 ) tightly onto the tubular section ( 14 ), the first and second projections ( 19 , 20 ; 38 , 39 ) come into contact and glide onto each other with the at least one increasing shoulder, whereby a forward directed axial force towards the opening of the neck is exerted on the screw cap ( 26 ), whereby due to the play between the internal and external thread the internal thread ( 34 ) is pressed with a flank against a thread flank of the external thread ( 16 ), and an axial displacement of a screw cap ( 26 ) takes place which results in a ventilation gap between the sealing surfaces ( 22 , 36 ), the first and second projections are moved past each other during further screwing tightly and the first and second sealing surfaces ( 22 , 36 ) attain a sealed setting in which they lie sealed against each other.

2. The screw cap lidded container according to claim 1 , in which the tubular section ( 14 ) has the first sealing surface ( 22 ) on the inner periphery of the tubular section ( 14 ) and the screw cap ( 26 ) has the second sealing surface ( 36 ) on a stopper ( 35 ) projecting from the cap bottom ( 27 ).

3. The screw cap lidded container according to claim 1 , in which the at least one first projection ( 19 , 20 ) on the front side, in the circular cylindrical cut surface about the central axis of the tubular section ( 14 ), has a decreasing shoulder, and/or the at least one second projection ( 38 , 39 ) on the back side, in a circular cylindrical cut surface about the central axis of the screw cap ( 26 ), has a decreasing shoulder, such that during further screwing the screw cap ( 26 ) tightly from the ventilation position into the sealed position, the first and second projections glide over each other with the at least one decreasing shoulder, whereby the forward directed force exerted on the screw cap ( 26 ) is completely or partially absorbed until the sealed setting is attained.

4. The screw cap lidded container according to claim 1 , in which the container body ( 2 ) has a plurality of first projections ( 19 , 20 ) distributed uniformly about the tubular section, and the screw cap ( 26 ) has a corresponding number of second projections ( 38 , 39 ) distributed uniformly about the cap opening ( 29 ).

5. The screw cap lidded container according to claim 4 , in which the container body ( 2 ) has two first projections ( 19 , 20 ) arranged on diametrically opposed sides of the tubular section ( 14 ), and the screw cap ( 26 ) has two second projections ( 38 , 39 ) arranged on diametrically opposed sides of the cap opening ( 29 ).

6. The screw cap lidded container according to claim 1 , in which the at least one first projection ( 19 , 20 ) is convex on the front side, and/or in which the at least one second projection ( 38 , 39 ) is convex on the back side.

7. The screw cap lidded container according to claim 1 , in which the at least one first projection ( 19 , 20 ) projects outward from the tubular section ( 14 ) behind the external thread ( 16 ), and/or in which the at least one second projection projects from the cap casing ( 28 ) behind the internal thread ( 34 ).

8. The screw cap lidded container according to claim 1 , in which the at least one first projection ( 19 , 20 ) is a circular cylindrical pin projecting radially from the tubular section ( 14 ) behind the external thread ( 16 ), and/or in which the at least one second projection ( 38 , 39 ) is a hump projecting from the cap casing behind the internal thread ( 34 ).

9. The screw cap lidded container according to claim 1 , in which the at least one second projection ( 38 , 39 ) on an outer end has a latching groove ( 40 ) into which the at least one first projection ( 19 , 20 ) latches in the ventilation position, or in which the at least one first projection ( 19 , 20 ) on the outer end has a latching groove ( 40 ) into which the at least one second projection ( 38 , 39 ) latches in the ventilation position.

10. The screw cap lidded container according to claim 9 , in which the latching groove ( 40 ) is rounded.

11. The screw cap lidded container according to claim 1 , in which the at least one second projection ( 38 , 39 ) projects inward from the cap casing ( 28 ).

12. The screw cap lidded container according to claim 1 , in which the screw cap ( 26 ) has a radial widening ( 30 ) on the outer edge of the cap casing ( 28 ) thereof, and the at least one second projection ( 38 , 39 ) is arranged within the widening ( 30 ).

13. The screw cap lidded container according to claim 1 , in which the external thread ( 16 ) and/or the internal thread ( 34 ) have at least one flattening ( 17 , 18 ) of the thread profile.

14. The screw cap lidded container according to claim 1 , in which the screw cap ( 26 ) has a marking ( 41 ) on the outside.

15. The screw cap lidded container according to claim 1 , that is a culture flask ( 1 ), or a test tube ( 53 ), or a roller bottle ( 44 ), or a spinner bottle ( 45 ), or an Erlenmeyer flask ( 50 ), or a laboratory bottle.

16. The screw cap lidded container according to claim 1 , whose container body ( 2 ) is produced from polystyrene or polycarbonate or from another plastic and/or whose screw cap ( 26 ) is produced from polypropylene or polyethylene or polytetrafluoroethylene or from another plastic or from a combination of the named materials.

Assignees

• Eppendorf Ag

Inventors

• Seippel Martin

Classifications

• B01L3/08 Primary

  Flasks · CPC title

• C12M23/08

  Flask, bottle or test tube · CPC title

• C12M29/20

  Degassing; Venting; Bubble traps (means for collection or storage of gas C12M23/36; gas collection apparatus for laboratory use B01L5/02) · CPC title

• C12M23/46

  Means for fastening · CPC title

• C12M23/02

  Form or structure of the vessel (large containers B65D88/00) · CPC title