Abstract: A container for a maintenance-free lead-acid storage battery includes a multi-compartment base wherein individual cells of the battery are contained. An overlying cover in vapor-sealed engagement with the base includes a plurality of integrally-molded filler wells which extend from a recess in the top surface of the cover into respective cell compartments of the battery. A one-piece molded vent cover seated within the recess includes a plurality of vent plug portions which extend through the filler wells into respective ones of the cell compartments. An annular flange associated with each filler well coacts with ribs on the vent plug portions to lock the vent cover in place.

Abstract: Shunt currents can be eliminated in electrochemical devices by introducing nulling currents via auxiliary electrodes. The invention teaches the reduction or elimination of these shunt currents in such devices with minimized power consumption. Shunt current nulling tunnels are provided which interconnect with electrolyte supply channels feeding the cells of the electrochemical device. Power consumption for the shunt current-nulling tunnels is reduced by designing the tunnels to have an increasing electrical resistance towards their mid-portions. Another embodiment of the invention features an increasing electrical resistance towards the mid-portion of the tunnels and a decreasing electrical resistance towards the mid-portion of the manifolds.

Abstract: A vent cap for a storage battery, which vent cap includes a base portion and a cover portion which are retained to each other to provide a gas collecting enclosure. The base portion comprises a tray and peripherally extending walls, and is divided into a plurality of cavities by at least one transversely extending rib, which cavities include a first segment having an assembly which communicates with one of the cells of the battery and a second segment which is substantially enclosed to form a holding area and which is separated from the first segment by a plurality of baffles having an aperture which permits limited communication between the first and second segments.

Abstract: A vented battery cap is provided which is adapted to engage at least one of a plurality of fill holes in an automotive storage battery or similar lead acid battery and which has pressure release means for venting the combustible gases produced within that storage battery under conditions such as ovecharge conditions into the atmosphere. The cap itself is comprised of substantially two portions, a base member which fits into at least one of the fill holes and a top member which snap-fits through the base member. The pressure release means comprises a plurality of extremely narrow slits on both the top and underside of the cap which have widths in the order of 0.003 to 0.005 of an inch. The remainder of the battery cap is tightly sealed to prevent any extraneous leaks of battery gases received form the automotive battery form leaking into the atmosphere.

Abstract: An improved manifold vented battery cover is disclosed. The disclosed battery cover has an improved manifold construction which is defined by the assembly of mated inner and outer members. In addition, the disclosed cover includes an external terminal post having a repositioning portion encapsulated within the mated inner and outer members.

Abstract: The present invention is directed to a method of minimizing shunt currents in electrochemical devices which have a plurality of cells connected, at least in part, in series and which have a common electrolyte which is fed to at least two of the cells as a shared electrolyte from a common manifold via individual inlet channels, whereby an electrical electrolytic conductive bypass path is created around such cells and through said shared electrolyte, resulting in undesirable shunt currents. This method involves providing electrolyte tunnels which connect the individual inlet channels and applying a protective current through said electrolyte tunnels and thus through said shared electrolyte, the protective current being of a magnitude which effectively at least reduces said shunt currents. Thus, a single protective current may be applied such that shunt currents are minimized, and preferably are totally eliminated.

Abstract: A cover apparatus for a monoblock storage battery in which a case-shaped cover plate is provided on its reverse surface with a common exhaust passage which is formed between mutually facing walls and is covered with a covering wall and also with baffle walls so disposed outside respective ventilation openings made in the facing wall or walls as to leave respective gaps therebetween, and the respective gaps are covered with a covering wall for obstructing gas generated in cell chambers from flowing directly into the common exhaust passage.

Abstract: The invention involves storage batteries and, more particularly a storage battery wherein a battery container cover has a specially improved structure.

Abstract: Means for inhibiting the escape of liquid from a liquid electrolyte battery having at least one fluid vent, wherein the battery is subject to frequent partial rotation about a horizontal axis, such as in the mounting of a power-assisted manually operated golf-bag carrying tricycle cart. The apparatus comprises a manifold and a hollow tube defining a coil substantially in a plane perpendicular to the axis of contemplated battery rotation, the coil having an outlet suspended normally directly downwardly.

Abstract: A container for a remotely-vented lead-acid storage battery includes a multi-compartment base containing individual cells of the battery and an overlying cover in vapor-sealed engagement with the base. A gas collection manifold positioned within a recess in the bottom surface of the cover includes a plurality of interconnected expansion chambers which communicate with respective ones of the battery cell compartments, and a discharge port exterior to the battery container. Battery gas collected within the expansion chambers is conveyed within the manifold to the discharge port, thereby avoiding the need for additional gas collection elements external to the cover and the attendant possibility of leakage of battery gas in the vicinity of the battery.

Abstract: A vented cap for a multiple cell storage battery comprises a base member having a plurality of integrally molded vent plug portions adapted to fit into individual filler walls of the battery and a cover member which snaps in place over the base member to form a chamber for gas egressing from the battery. The base member includes interior walls and a plurality of integrally molded latch members which engage the rim of the cover member to secure the cover member in abutting relationship to the interior walls. The interior walls are dimensioned to space the rim of the cover member from the rim of the base member whereby a continuous vent slot is formed around the periphery of the cap which allows battery gas to escape from the chamber with wide dispersion while inhibiting inward propagation of an externally generated flame.

Abstract: An electric storage battery comprising a closure sealed with a battery casing and having gas venting means which allows gases from cells to be vented out of the storage battery, but which prevents electrolyte mist and water steam from the cells carried together with the gases to be leaked out of the storage battery. A gas cooling chamber is provided on a battery cover of the closure and has a water returning cylindrical portion provided on a bottom of the gas cooling chamber and having a water returning lateral port adapted to return the water. A gas filter chamber is provided adjacent to the gas cooling chamber to communicate with the gas cooling chamber through an opening in the wall of the gas cooling chamber at the top thereof and has an explosion-proof gas filter of porous ceramics provided to vent gases therethrough.

Abstract: Apertures in internal partitions provide gas passages. A separator chamber with narrow liquid return slot leads to a gas outlet hose coupling.

Abstract: A vented cap for a multiple cell storage battery comprises a base member having a plurality of integrally molded vent plug portions adapted to fit into individual filler wells of the battery and a cover member which snaps in place over the base member to form a chamber for gas egressing from the battery. The base member includes interior walls and a plurality of integrally molded latch members which engage the rim of the cover member to secure the cover member in abutting relationship to the interior walls. The interior walls are dimensioned to space the rim of the cover member from the rim of the base member whereby a continuous vent slot is formed around the periphery of the cap which allows battery gas to escape from the chamber with wide dispersion while inhibiting inward propagation of an externally generated flame.

Abstract: A sealed water supply chamber 18 for a battery vessel 1 is formed by thermally bonding together the vessel, a lid member 2 having a plurality of vertically disposed level defining tubes 11, water inlet and gas outlet ports 12, and water pools or reservoirs 14 at each end, and a cover member 3 having threaded openings 16 at each end and downwardly depending cups 13 disposed above the respective tubes 11. Tight bonding is facilitated by molding the vessel, the lid member, and the cover member from the same thermoplastic material. L-shaped water inlet and outlet pipes 4 are screwed into the openings 16 and sealed by rubber packings 15, with the lower end of each pipe disposed just above the bottom of a water reservoir 14. Surplus water remaining in the reservoirs thus provides a gas barrier to isolate the chambers 18 of a plurality of batteries connected in an array, whereby a gas explosion in one battery cannot flash through the water connecing pipes to ignite the other batteries.

Abstract: A vented battery cap is provided which is adapted to engage at least one of a plurality of fill holes in an automotive storage battery or similar lead acid battery and which has pressure release means for venting the combustible gases produced within that storage battery under conditions such as overcharge conditions into the atmosphere, said pressure release means comprising a plurality of extremely narrow slits having widths in the order of 0.003 to 0.005 of an inch. The remainder of the battery cap is tightly sealed to prevent any extraneous leaks of battery gases received from the automotive battery from leaking into the atmosphere. The slits are so constructed to facilitate the safe expulsion of any volume of gas normally produced by an automotive storage battery, while virtually eliminating the likelihood that ignition of gases within the atmosphere will result in explosive consequences either within the battery cap or within the battery itself.

Abstract: An electric storage battery vent comprising first and second members inhibits battery explosions by venting gases generated within a battery through a narrow passage formed between said first and second members to a vent hole in one of said members.