Patent ID: 8679663
Filing Date: 2014-03-25
Classification: H01M,Y02E

Abstract:
1. A vented battery comprising: a battery case defining a vent port including internal tabs having a first lead angle; and a vent cap including external tabs having a second lead angle substantially similar to the first lead angle, each of the external vent cap tabs including an upper portion and a lower portion, the vent cap having an installed position in which the upper portions of the external vent cap tabs interfit with the internal vent port tabs to retain the vent cap in the vent port, each of the external vent cap tab lower portions including a longitudinally oriented ramp portion adapted to facilitate movement of the external vent cap tabs past the internal vent port tabs as the vent cap is inserted into the vent port axially without rotation, the external vent cap tabs permitting the vent cap to be unscrewed and removed from the vent port, the vent cap further including alignment tabs angularly offset from the external vent cap tabs, the alignment tabs positioned to pass between the internal vent port tabs during installation when the external vent cap tabs are longitudinally aligned with the internal vent port tabs.