Closure cap
OwnerTjandra Limanjayainventor
Life of this patent
Estimating the term…
Abstract
An injection moulded, plastics material cap (1) for a screw top bottle has a top and a skirt with an anti-tamper band (2) connected to the skirt at a tear-off line by links (3). On the inside of the top of the cap, a depending annular ridge (10) is provided. Its inside diameter is such that it abuts and seals on the outside diameter of the distal end of the neck of the bottle. Also on the inside of the cap, inside the ridge (10), is moulded a forked feature having an inner limb (12) which extends generally downwards with an outwards bias, and an outer limb (13) which extends generally outwards with downwards bias. The inner limb is dimensioned to fit inside the mouth at the neck of the bottle, sealingly engaging it, whiles the outer limb is dimensioned to abut the end of the neck, also sealingly engaging it when the cap is screwed tight.
Claims13
A plastics material cap for closing a container, the cap comprising:
- top and a skirt;
- a first annular sealing member arranged to abut the inside of a neck of the container and
- a second annular sealing member arranged to abut the distal end of the neck of the container,
- the first and second members have a common root, whereby abutment of the distal end of the container with second member tends to rotate the first member into firmer contact with the inside of the neck, and
- a third annular sealing member arranged to abut the outside of the neck of the container and
- means on the skirt for holding the cap in sealing relationship with the container,
- wherein:
- the three annular sealing members depend from the top of the cap;
- wherein:
- the three annular sealing members are lips dimensioned for slight deflection on sealing abutment with the container and adapted to deflect against the bottle under pressure of fluid to be sealed,
- the first sealing lip extending transversely of the top of the cap from the common root,
- the second sealing lip extending obliquely towards the skirt of the cap from the common root and
- the third sealing lip extending transversely of the top of the cap;
- wherein:
- the sealing lips are of substantially the same cross-sectional shape, being in cross-section:
- substantially uniform thickness lips, with
- rounded sealing edges.
A plastics material cap for closing a container, the cap comprising:
- a top and a skirt,
- means integrally formed with the top on its inside for sealing the cap to the container;
- means on the skirt for holding the cap in sealing relationship with the container;
- and
- an anti-tamper band frangibly connected to the skirt, the band having
- a plurality of upwardly directed tongues resiliently mounted on the band for engagement under a rim on the container on fitting of the cap to the container
- wherein there are also provided:
- invert V fold members between and interconnecting the tongues;
- ribs on the radially outer surfaces of the tongues for limiting the radial movement of tongues on fitting of the cap to the container;
- and
- a ridge on the inside surface of the skirt for co-operating with the ribs in limiting radial movement of the tongues.
Dependencies are inferred from the claim text.