Abstract: A removable bottle closure is set forth. The bottle closure is adapted and constructed to removably seal a container. The bottle closure includes at least one air valve. The air valve is formed to control both liquid and air flow within a container sealed by the bottle closure.

Abstract: A pushpin device comprises a head adapted to allow a user to apply pressure to the head without discomfort, longitudinally extending fastening member coupled to the head, a base comprising an aperture configured to allow the fastening member to pass through the base, and an outer member coupled to the head and the base. In a first position, the head is spaced from the base, and the outer member encloses a longitudinal segment of the fastening member. In a second position, the outer member is deformed to place the head proximate to the base and to extend the fastening member through the aperture. The outer member exerts a countering force on the base and the head, one of which comprises magnetically susceptible material while the other comprises magnetic material. A magnetic force between the head and the base maintains the outer member in the second position.

Abstract: A pushpin device of one embodiment preferably comprises a head adapted to allow a user to apply pressure to the head without discomfort. A longitudinally extending fastening member comprises a point at a distal end and is coupled to the head at a proximal end. A base comprises an aperture. The aperture is configured to allow the fastening member to pass through the base as the head moves proximate to the base. An outer member is coupled to the head and the base. The outer member comprises a first position in which the head is spaced from the base and the outer member encloses a longitudinal segment of the fastening member. In a second position the head is proximate to the base and the outer member is deformed, thereby allowing the fastening member to extend through the aperture. The outer member exerts a countering force on the base and the head. One of the head and the base comprises magnetically susceptible material and the other comprises magnetic material.

Abstract: A pushpin device of one embodiment preferably comprises a head adapted to allow a user to apply pressure to the head without discomfort. A longitudinally extending fastening member comprises a point at a distal end and is coupled to the head at a proximal end. A base comprises an aperture. The aperture is configured to allow the fastening member to pass through the base as the head moves proximate to the base. An outer member is coupled to the head and the base. The outer member comprises a first position in which the head is spaced from the base and the outer member encloses a longitudinal segment of the fastening member. In a second position the head is proximate to the base and the outer member is deformed, thereby allowing the fastening member to extend through the aperture. The outer member exerts a countering force on the base and the head. One of the head and the base comprises magnetically susceptible material and the other comprises magnetic material.