| 摘要 |
1501059 Cell or battery covers GOULD Inc 8 Nov 1976 [17 Nov 1975] 46348/76 Heading H1B A cover for a case of an electric storage battery or cell comprises an inner surface engageable with portions of the case for closing the cell or battery, a fill and vent opening extending therethrough, and a rib on its inner surface for directing liquid to the opening when the cell or battery is inverted and rocked from side to side. In one embodiment, an inverted battery 10 from which liquid is being drained comprises a cover 12, the inner surface of which is shown in Fig. 2, and includes a shallow peripheral groove 21 in which the side walls of the case fit with the upstanding flange 22 overlapping the side walls of the case. The recess or channel 16 (Fig. 1) in which the vent holes 13 are located is formed by two raised step-like shoulders 25 and 26; the holes also include integral collars 27 and extensions 28 which project into battery case 11. A plurality of integral guide upstanding vanes or ribs 31 concentrate and direct liquid over the step 25 and into the collar 27 and then into vent hole 13. The vanes may extend completely to the wall 12 of the cover (Fig. 2, middle cell compartment) or they may stop short of the wall (outer cell compartments). As shown in the lowest cell compartment (Fig. 2) an integral guide vane 35 concentrates and directs the reverse flow of liquid over step 26 and around 28 during the rocking cycle. Alternatively, a single rib 37 (Figs. 6-8, not shown) may be integrally formed in the front portion of the cell area extending from the front edge of 12 to collar 27. In another embodiment the concentrating means (Figs. 11 and 12, not shown) include a series of three integrally formed ribs 40, 41 and 42 defining progressively smaller channels 43 and 44 leading to vent hole 13. The battery case and cover may be of hard rubber or thin wall plastic material (e.g. polypropylene or ethylene-propylene copolymers); and the battery is preferably of a lead-acid secondary type. |
