Pilferproof cap assembly for a container

A pilferproof cap assembly (100) for a container (10), said assembly (100) configured to facilitate refilling and decanting of fluid in said container (10), said assembly (100) comprising:

• a neck housing (12) configured to be fitted on an opening of said container (10), said neck housing (12) comprising:
• an enclosure (14) configured with a plurality of perforations (16) and a first central passage (18) to facilitate fluid flow and air flow separately;
• a hollow shaft (20) configured to be lockingly received within said first central passage (18) against compressive force of a biasing means (22) and further configured to protrude out through said first central passage (18);
• a linearly displaceable diaphragm (24) configured to be concentrically fitted within said enclosure (14) and further configured to lock with an operative section of said hollow shaft (20) to define a second central passage (26), said linearly displaceable diaphragm (24) configured to define a fluid-orifice (50) for fluid flow through said plurality of perforations (16);
• a non-return valve (28) configured with an air-orifice (30) and a guide-channel (32) slopping downward from said air-orifice (30), said air-orifice (30) is configured to be in fluid communication with said second central passage (26) to facilitate air flow in operative condition;
• and
• a fulcrum (34) is configured to be pivotally mounted to said non-return valve (28), and further configured to lift a closing means (38) along said guide-channel (32) to enable opening and closing of said air-orifice (30) to define an air flow path (72a, 72b), and
• an adaptor (40), configured to be mounted on an operative top of said neck housing (12), in an operative condition of said assembly, said adaptor is configured to actuate said linearly displaceable diaphragm (24) of said neck housing (12) to operate said fluid-orifice (50) and said air-orifice (30) simultaneously.