Abstract: A vent cap (10) for a battery having a centrally disposed cavity (22) to militate against contamination of battery components from impurities contained in the ambient air and also including a plurality of alternating partitions (26) which creates a condensation medium for the deposit of droplets of electrolyte carried by gases venting from the battery.

Abstract: An improved process for the manufacture of crosslinked copolymer particles from seed particles by imbibing a monomer therein and polymerizing the same under controlled suspension conditions wherein said improvement comprises expanding the seed in staged or sequential steps of feeding lower levels of crosslinking monomers in the early stages and preferably higher levels of crosslinking monomers at later stages of polymerization.

Abstract: The disclosure concerns a plurality of adjacent rectangular secondary battery cell covers having either identical symmetrically located narrow-necked sockets in each corner or inverte4d flared-top pins symmetrically located in each corner, and corresponding flexible plastic cable retainers having a pair of spaced cooperating enlarged-headed pins or narrow-necked sockets, respectively, on their bottoms. These pins or sockets on the retainers are spaced equally to the spacing between the sockets or pins, respectively, on adjacent corners of said covers, so that the cable retainers snap into place and bridge the tops of the walls of adjacent battery cells. The cable retainers have continuous or slit loops for holding one or a pair of battery cables along and between the tops of the battery cells.

Abstract: A lightweight acid-resistant plastic dispenser having a handle housing enclosing a valve and valve-operating mechanism and remote therefrom on a rigid tubular extension a plastic water nozzle and a flexible hose connected to a water source.The nozzle of the dispenser has two ducts, one for water and the other for aspirated air to produce a suction when the level of the liquid in the battery cell being filled reaches the lower end of the nozzle. The aspirated or suction air operates a diaphragm to break a toggle in the valve-operating mechanism, automatically shutting the water valve in the handle housing.The valve control mechanism in the handle comprises a double toggle composed of three alignable links which when aligned operate against the normally spring-pressed water valve to hold it open.

Abstract: A non-leaking flexible plastic bellows connection between the cover and the lead terminal of a secondary battery expandable plate, including circumferential grooves around the terminal for molding thereto one end of the plastic bellows while the other end is sealed to the plastic cover of the battery or formed integral therewith. The grooves in the upper end of the lead terminal may be formed in the terminal or in a sleeve of softer lead composition integrally attached to the end of the terminal. The lead cell connectors are integrally attached to the upper outer ends of these lead sleeves or terminals above the grooves therein.

Abstract: A process for the manufacture of crosslinked ion exchange copolymer particles wherein small seed particles are swollen to final size by concurrently feeding monomer and polymerizing the same under controlled suspension conditions and the unique ion exchange particles produced thereby.

Abstract: A television system for broadcasting data simultaneously with but independently of television programs, in which digitally coded information carrying signals are superimposed or otherwise added to a video system in the field blanking interval. The local receiver is fitted with a decoder by means of which a viewer is able to select a particular page of supplementary information which is then superimposed over the broadcast program. Generally, this information is available to any member of the public who has a requisite decoder. In this system the digitally coded information carrying signals are enciphered prior to transmission in accordance with a predetermined key and the receiving terminal has a cipher circuit operable in accordance with the key to decipher the enciphered signals.

Abstract: Hybrid copolymers are prepared by at least partially filling the macropores of a macroreticular copolymer with a guest crosslinked copolymer of either the same monomers or a copolymer of different type monomers. The hybrid copolymers can be readily converted into ion exchange resins. Such resins have markedly improved physical and chemical properties, including improved ion exchange properties.

Abstract: Chloromethylated hybrid copolymers are base-functionalized with polyethyleneimines prior to conventional acid functionalization, to produce hybrid resins with markedly improved ion exchange properties.

Abstract: A process for desalinating water containing mineral salts utilizes thermally regenerable hybrid resins. A preferred embodiment provides for the desalination of saline water using hybrid resins comprising per hundred parts of macroreticular host polymer, a guest phase ranging from 50 to 300 parts by weight.

Abstract: Hybrid copolymers are prepared by at least partially filling the macropores of a macroreticular ion exchange resin with a gel type, crosslinked copolymer of either the same monomers or a copolymer of different type monomers. The hybrid copolymers can be readily converted into ion exchange resins. Such resins have markedly improved physical and chemical properties, including improved ion exchange properties.