Douglas Battery Manufacturing Company

Mitek Holdings, Inc.

Doulgas Battery Manufacturing Company

Douglas Battery Manufacturing

Teck Metals Ltd.

Robert W Fritts

David M Revak

James H Kellett

David L Schoenecker

Raymond W Gaddis

Albert M Vincze

Douglas G Clark

Malcolm John Dewar

Victor Nasri Saleh

A process and apparatus for continuously mixing and applying paste to battery grids for use in lead-acid battery systems, in which particulate lead oxide, water and sulphuric acid are reacted in an elongated mixer having a mixing to conveying ratio of about 65:35 to 80:20 with controlled reaction temperature for an exit product temperature in the range of above 60&#xb0; C. to about 80&#xb0; C. Additives including reinforcing fibers can be added in an amount up to 0.6 wt % of the lead oxide and carbon and graphite powder can be added in an amount up to 6 wt % of the lead oxide.

Method and apparatus for continuously mixing battery pastes

The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover provides a labyrinth of passages which provide a path from each cell vent to the atmospheric vent. The labyrinth is configured to provide a portion of each path above a level in which the electrolyte in the respective cells attains when the battery is tipped on any one of its sides or rotated ninety (90) degrees from an upright position. The labyrinth configuration prevents electrolyte from reaching the atmospheric vent and spilling out of the battery.

Leak resistant battery cover

The present invention is directed to a leak resistant battery cover for storage batteries. The battery cover sealably engages a conventional battery housing having multiple cells separated by internal housing walls. The cover has a substantially flat interior area, a portion of which extends over part of each battery cell when the cover is placed upon a battery housing. The cover includes a cell chamber for each battery cell. Drain-back/vents communicate each cell chamber with its corresponding battery cell. The drain-back/vent, whether separate or integrated allows escape of electrolyte gases from the battery cells into the corresponding battery chamber and provide for the return of liquid electrolyte back to the cells from the cell chambers. None of the cell chambers communicate directly through the battery cover to atmosphere. One or more additional chambers are provided in the cover above the central cells of the battery housing. These additional chambers are in a geometrically central area of the battery cover away from the outside perimeter of the cover. Unlike the cell chambers, the additional chambers directly communicate with atmosphere through a convoluted passage and atmospheric vent. Additionally, each additional chamber includes a drain-back/vent directly communicating with one of the central most cells in the battery housing. Thus, the central most cells communicate with the most central cell chambers and the additional chamber. The remaining battery cells do not communicate with the additional chambers.

Battery cover

Battery housing

The container or casing of a storage battery for automobiles and the like is so constructed as to be universally compatible for use with various types of securing mechanisms. Positive and negative terminals are provided on both the top and on one of the side walls. The battery may be secured by a peripheral frame which engages the periphery of the top wall, a central bail which overlies the medial portion of the top wall, or lower opposed clips which engage and clamp onto ledges on opposed side walls or opposed end walls. The top wall and bottom wall are so constructed as to nest to the adjacent housing in a stack when stored or displayed, and a space between adjacent housings allows visual inspection of a color coded handle. In addition, a unique vent cover construction elevates the wells surrounding the vent openings to maximize the vertical dimension of the plates therebeneath.

Storage battery housing

Growing community of inventors

Thomasville, NC, United States of America

Robert W Fritts