Complex cap and culture container assembly using same

Abstract

A complex cap includes a coupling element, a shielding element and at least one filtering element. The coupling element has a first coupling part to be coupled with a neck portion of a bottle body, a recess formed in the first coupling part, and a first opening is formed in a bottom of the recess. The first opening is communicated with the mouth portion of the bottle body when the first coupling part is coupled with the neck portion of the bottle body. The shielding element is used for at least partially sheltering the first opening of the coupling element and comprises a second coupling part to be tight-fitted into the recess of the coupling element. The filtering element is mounted in the recess of the coupling element and arranged between the coupling element and the shielding element for filtering off external contaminants and controlling gas-permeable amount.

1 . A complex cap for use with a bottle body having a mouth portion and a neck portion, said complex cap comprising:
 a coupling element having a first coupling part to be coupled with said neck portion of said bottle body, a recess formed in said first coupling part, and a first opening is formed in a bottom of said recess, wherein said first opening is communicated with said mouth portion of said bottle body when said first coupling part is coupled with said neck portion of said bottle body;   a shielding element for at least partially sheltering said first opening of said coupling element and comprising a second coupling part to be tight-fitted into said recess of said coupling element; and   at least one filtering element mounted in said recess of said coupling element and arranged between said coupling element and said shielding element for filtering off external contaminants and controlling gas-permeable amount.   
   
   
       2 . The complex cap according to  claim 1  wherein said coupling element further comprises a first extension part, which is extended from a bottom of said first coupling part for facilitating said first coupling part to be tightly coupled with said neck portion of said bottle body. 
   
   
       3 . The complex cap according to  claim 1  wherein said shielding element further comprises a second extension part, which is externally extended from a top edge of said second coupling part. 
   
   
       4 . The complex cap according to  claim 1  wherein an engaging groove is formed in a sidewall of said recess, an engaging rib is formed on an outer periphery of said second coupling part of said first shielding element, and said engaging rib is engaged with said engaging groove when said second coupling part is inserted into said recess of said coupling element. 
   
   
       5 . The complex cap according to  claim 1  wherein said first coupling part has several ribs, which are formed in said first opening and radially arranged with respect to a centerline of said first opening. 
   
   
       6 . The complex cap according to  claim 1  wherein said second coupling part of said first shielding element further has at least one second opening communicated with said first opening of said coupling element. 
   
   
       7 . The complex cap according to  claim 1  wherein said coupling element is made of elastomeric material, and said shielding element is made of transparent or opaque hard material. 
   
   
       8 . The complex cap according to  claim 1  wherein said filtering element is made of non-woven fabric, paper, membrane, tiny gauze or a combination thereof. 
   
   
       9 . The complex cap according to  claim 1  wherein said bottle body is a bottle body of a culture bottle for accommodating plant cultures, microorganisms, fungus or plant tissues therein. 
   
   
       10 . A culture container assembly comprising:
 a bottle body having a mouth portion and a neck portion; and   a complex cap comprising:
 a coupling element having a first coupling part to be coupled with said neck portion of said bottle body, a recess formed in said first coupling part, and a first opening is formed in a bottom of said recess, wherein said first opening is communicated with said mouth portion of said bottle body when said first coupling part is coupled with said neck portion of said bottle body; 
 a shielding element for at least partially sheltering said first opening of said coupling element and comprising a second coupling part to be tight-fitted into said recess of said coupling element; and 
 at least one filtering element mounted in said recess of said coupling element and arranged between said coupling element and said shielding element for filtering off external contaminants and controlling gas-permeable amount. 
   
   
   
       11 . The culture container assembly according to  claim 10  wherein said coupling element further comprises a first extension part, which is extended from a bottom of said first coupling part for facilitating said first coupling part to be tightly coupled with said neck portion of said bottle body. 
   
   
       12 . The culture container assembly according to  claim 10  wherein said shielding element further comprises a second extension part, which is externally extended from a top edge of said second coupling part. 
   
   
       13 . The culture container assembly according to  claim 10  wherein an engaging groove is formed in a sidewall of said recess, an engaging rib is formed on an outer periphery of said second coupling part of said first shielding element, and said engaging rib is engaged with said engaging groove when said second coupling part is inserted into said recess of said coupling element. 
   
   
       14 . The culture container assembly according to  claim 10  wherein said first coupling part has several ribs, which are formed in said first opening and radially arranged with respect to a centerline of said first opening. 
   
   
       15 . The culture container assembly according to  claim 10  wherein said second coupling part of said first shielding element further has at least one second opening communicated with said first opening of said coupling element. 
   
   
       16 . The culture container assembly according to  claim 10  wherein said coupling element is made of elastomeric material, and said shielding element is made of transparent or opaque hard material. 
   
   
       17 . The culture container assembly according to  claim 10  wherein said filtering element is made of non-woven fabric, paper, membrane, tiny gauze or a combination thereof. 
   
   
       18 . The culture container assembly according to  claim 10  wherein said bottle body is a bottle body of a culture bottle for accommodating plant cultures, microorganisms, fungus or plant tissues therein. 
   
   
       19 . A culture container assembly comprising:
 a bottle body having a mouth portion and a neck portion; and   a complex cap comprising:
 a coupling element having a first coupling part to be coupled with said neck portion of said bottle body, a recess formed in said first coupling part, and a first opening is formed in a bottom of said recess, wherein said first opening is communicated with said mouth portion of said bottle body when said first coupling part is coupled with said neck portion of said bottle body; 
 a plurality of shielding elements for at least partially sheltering said first opening of said coupling element, each of said shielding elements comprising a second coupling part to be tight-fitted into said recess of said coupling element, wherein said shielding elements comprises at least first and second shielding elements having different sizes of second openings, and one of said first and second shielding elements are replaceable with the other one; and 
 at least one filtering element mounted in said recess of said coupling element and arranged between said coupling element and said shielding element for filtering off external contaminants and controlling gas-permeable amount. 
   
   
   
       20 . The culture container assembly according to  claim 19  wherein said second opening of said first shielding element has a relatively larger size than said second opening of said second shielding element.