초록 ▼

A vent valve is capable of mechanical attachment to a lead acid battery through vent hole structure provided in the case cover. The vent valve is a molded hollow tubular housing having a cup portion, the bottom of which rests atop the battery case, and a neck portion extending through an opening int

A vent valve is capable of mechanical attachment to a lead acid battery through vent hole structure provided in the case cover. The vent valve is a molded hollow tubular housing having a cup portion, the bottom of which rests atop the battery case, and a neck portion extending through an opening into the battery case. The neck carries cam members on its outer surface which are engaged by similar opposed surfaces or pins on a portion of the case so that, when the cup bottom is seated on a sealing gasket on the case cover and the vent valve is rotated, it is secured and sealed to the case cover. A barrier extends across the inside of the vent valve housing and blocks passage of gases. A pair of oppositely directed valve openings through the barrier establish vent passages which are defined by nozzles protruding through the barrier in opposite directions. Each nozzle is covered by a resilient cup valve member arranged to yield to a higher pressure within a cup at predetermined pressure differentials. Limit means are positioned relative to the cup members to limit the amount of movement of the respective cups away from its nozzle.

대표청구항 ▼

[ We claim the following:] [1.]1. A lead-acid battery vent valve apparatus to relieve excessive positive and negative gas pressure within the battery, comprising:a hollow housing, a first part of which fits within a vent in a battery case and a second part overlying the case;a barrier extending acro

[ We claim the following:] [1.]1. A lead-acid battery vent valve apparatus to relieve excessive positive and negative gas pressure within the battery, comprising:a hollow housing, a first part of which fits within a vent in a battery case and a second part overlying the case;a barrier extending across the housing and blocking passage of gases;a pair of oppositely directed valve openings through the barrier; anda pair of valves, each valve located on an opposite side of the barrier and covering the respective valve opening, each valve yielding to a higher pressure present on a side of the barrier opposite the respective valve to relieve the higher pressure.