초록 ▼

A lid apparatus for a tank opening that retains fluid within the tank while allowing air to vent into or out of the tank. An air manifold is provided, preferably as part of an installation ring of the apparatus which is mounted to the tank around the tank opening. The air manifold has an outer radia

A lid apparatus for a tank opening that retains fluid within the tank while allowing air to vent into or out of the tank. An air manifold is provided, preferably as part of an installation ring of the apparatus which is mounted to the tank around the tank opening. The air manifold has an outer radial wall and an inner radial wall spanned by an annular base surface. A plurality of angularly spaced openings in the outer radial wall are angularly offset from a plurality of openings in the inner radial wall to be out of angular alignment therewith, and the space above the annular base surface between the outer radial wall openings and the inner radial wall openings provides a plurality of air flow passageways. A cap of the apparatus has a cover portion and a depending mounting member adapted to insert within the installation ring and engage a cap mounting portion of that ring to detachably mount the cap to the installation ring. A plurality of angularly spaced vent openings in the cap mounting member are in angular alignment with the inner radial wall openings when the cap is mounted to the installation ring to promote tank venting through the air manifold. Splash guards inward of the vent openings serve to limit fluid from splashing through the vent openings into the manifold. Additional openings in the manifold inner wall that are angularly aligned with openings in the manifold outer wall are also provided to enhance venting, and the additional openings are separated from the aligned outer wall openings by upstanding diverter plates that also block fluid from splashing radially outward through the manifold.

대표청구항 ▼

A lid apparatus for a tank opening that retains fluid within the tank while allowing air to vent into or out of the tank. An air manifold is provided, preferably as part of an installation ring of the apparatus which is mounted to the tank around the tank opening. The air manifold has an outer radia

A lid apparatus for a tank opening that retains fluid within the tank while allowing air to vent into or out of the tank. An air manifold is provided, preferably as part of an installation ring of the apparatus which is mounted to the tank around the tank opening. The air manifold has an outer radial wall and an inner radial wall spanned by an annular base surface. A plurality of angularly spaced openings in the outer radial wall are angularly offset from a plurality of openings in the inner radial wall to be out of angular alignment therewith, and the space above the annular base surface between the outer radial wall openings and the inner radial wall openings provides a plurality of air flow passageways. A cap of the apparatus has a cover portion and a depending mounting member adapted to insert within the installation ring and engage a cap mounting portion of that ring to detachably mount the cap to the installation ring. A plurality of angularly spaced vent openings in the cap mounting member are in angular alignment with the inner radial wall openings when the cap is mounted to the installation ring to promote tank venting through the air manifold. Splash guards inward of the vent openings serve to limit fluid from splashing through the vent openings into the manifold. Additional openings in the manifold inner wall that are angularly aligned with openings in the manifold outer wall are also provided to enhance venting, and the additional openings are separated from the aligned outer wall openings by upstanding diverter plates that also block fluid from splashing radially outward through the manifold. 9870500, Watanabe, 187/290; US-5058710, 19911000, Iwasa, 187/290; US-5162623, 19921100, Tachino, 187/290; US-5285029, 19940200, Araki, 187/290; US-5341902, 19940800, Ruiz, Sr. et al., 187/251; US-5680030, 19971000, Kadouchi et al., 320/015; US-5780980, 19980700, Naito, 318/139; US-5896948, 19990400, Suur-Askola et al., 187/290; US-6269910, 20010800, Fargo et al., 187/287; US-6315081, 20011100, Yeo, 187/290; US-6415892, 20020700, Araki et al., 187/290; US-6431323, 20020800, Tajima et al., 187/290; US-6439347, 20020800, Suga et al., 187/290; US-6439348, 20020800, Tajima et al., 187/290; US-6474447, 20021100, Tajima et al., 187/290; US-6522099, 20030200, Tominaga et al., 318/801