Tank cap having sequential engagement and disengagement

Claim 2

In a container cap for use in covering a filler neck of said container said cap comprising: a cap shell having a cylindrical member having an open end and an apertured integral domed end; a plurality of apertured baffles including a first baffle carried in the interior of said cap shell; a platform carried in the interior of said cap shell in proximity to the open end of said cap shell adjacent said first baffle, said platform having a circumferential channel at its cap shell contacting parameter, said circumferential channel defining a central portion having a plurality of apertures including a pair of small diameter apertures; a secondary tang member having a base portion with a plurality of apertures including a pair of small diameter apertures; said secondary tang members's base portion in contact with and attached to said central portion of said platform; and a spring tang attached to said secondary tang member, said spring tang being a generally flat plate have a pair of apertures and first and second end portions, said end portions having inclined engagement guide ramps with said inclines sloping upwardly to a flat portion of said end portions.

Claim 3

The invention in accordance with claim 1, wherein said plurality of apertured baffles includes: a first baffle being a cup shaped member having sidewalls extending from a concave end dome, said concave end dome having at least a single aperture through said dome; second and third baffles each being cup shaped members having sidewalls extending from respective concave end domes, said concave end domes having at least a single aperture through said dome, said single aperture of said second dome offset relative to said single aperture of said first dome and said third baffle dome.

Claim 4

The invention in accordance with claim 1, wherein said secondary tang member has sidewalls extending from said base portion of said tang member and first and second secondary tangs formed on said sidewalls at diametrically opposite positions.

Claim 5

The invention in accordance with claim 1, wherein said spring tang length is greater than the diameter of said secondary tang members whereby said spring tang extends outboard of said base portion of said secondary tang.

Claim 6

The invention in accordance with claim 4, wherein said spring tang is a flat plate having first and second end portions with inclined engagement guide ramps connected to said flat plate and to said flats at an intermediate point, both said inclined engagement guide ramps and said flats are melded into said flat plate of said spring tang.

Claim 7

The invention in accordance with claim 5, wherein said inclined engagement guide ramps are inclined at approximately thirty degrees from the normal horizontal plane of said spring tang.

Claim 8

In a container cap for use in covering a filler neck of said container said cap comprising: a cap shell being a cylindrical member having an open end and an apertured integral domed end; a first baffle being a cup shaped member having sidewalls extending from a concave end dome, said concave end dome having at least a single aperture through said dome; second and third baffles each being cup shaped members having sidewalls extending from respective concave end domes, said concave end domes having at least a single aperture through said dome, said single aperture of said second dome offset relative to said single aperture of said first dome and said third baffle dome; a platform carried in the interior of said cap shell in proximity to the open end of said cap shell adjacent said first baffle, said platform having a circumferential channel at its cap shell contacting perimeter, said circumferential channel defining a central portion having a plurality of apertures including a pair of small diameter apertures; a secondary tang member having a base portion with a plurality of apertures including a pair of small diameter apertures, sidewalls extending from said base portion of said tang member and a first and a second secondary tang formed on said sidewalls at diametrically opposite positions; a secondary tang member having a base portion with a plurality of apertures including a small diameter aperture, sidewalls extending from said base portion of said tang member and a first and a second secondary tang formed on said sidewalls at diametrically opposite positions; a spring tang being a flat plate having first and second end portions with inclined engagement guide ramps connected to said flat plate and to said flats at an intermediate point both of said inclined engagement guide ramps and said flats are melded into said flat plate of said spring tang; and a fastening means fastening said secondary tang member to said platform and said spring tang to said secondary tang member.

Claim 9

In a container cap for use in covering a filler neck of said container said cap comprising: a cap shell being a cylindrical member having an open end and an apertured integral domed end; a first baffle being a cup shaped member having sidewalls extending from a concave end dome, said concave end dome having at least a single aperture through said dome; second and third baffles each being cup shaped members having sidewalls extending from respective concave end domes, said concave end domes having at least a single aperture through said dome, said single aperture of said second dome offset relative to said single aperture of said first dome and said third baffle dome; a platform carried in the interior of said cap shell in proximity to the open end of said cap shell adjacent said first baffle, said platform having a circumferential channel at its cap shell contacting perimeter, said circumferential channel defining a central portion having a plurality of apertures including a pair of small diameter apertures; a secondary tang member having a base portion with a plurality of apertures including a pair of small diameter apertures, sidewalls extending from said base portion of said tang member and a first and a second secondary tang formed on said sidewalls at diametrically opposite positions; a secondary tang member having a base portion with a plurality of apertures including a small diameter aperture, sidewalls extending from said base portion of said tang member and a first and a second secondary tang formed on said sidewalls at diametrically opposite positions; a spring tang being a flat plate having first and second end portions with inclined engagement guide ramps connected to said flat plate and to said flats at an intermediate point both of said inclined engagement guide ramps and said flats are melded into said flat plate of said spring tang; and a fastening means fastening said secondary tang member to said platform and said spring tang to said secondary tang member.

Claim 10

The invention in accordance with claim 7, wherein said spring tang inclined engagement guide ramps are inclined at approximately thirty degrees from the normal horizontal plane of said spring tang.