Abstract: Trimming apparatus for cutting the side walls of containers to predetermined, dimensional requirements so that such containers will be properly sized for subsequent usage. The apparatus is comprised of support means for holding an uncut container and an adjustable cutter assembly adapted to move along the support means and cut the wall of the container along desired lines in a synchronized manner. Each of the cutters include at least two knives that track on the same cut line with the leading knife cutting only partially through the side wall of the container while the following knife completes the cut. The apparatus also includes loading means for loading uncut containers and means for removing the cut portions.

Abstract: A battery terminal post sealing system comprised of a bushing assembly designed to be mounted onto terminal posts subsequent to the battery cover installation. The bushings are designed to permit larger terminal post receiving holes in battery covers and also to provide a secure lead-to-lead seal with the terminal post and a sliding seal with the battery cover to easily accommodate growth of the positive plates.

Abstract: A method and apparatus is disclosed for bonding two pieces of thermoplastic material to one another. The method includes the steps of heating the edges of the plastic materials to be joined to at least their fusing temperatures and then forcing the heated edge portions against one another to thereby form a bonded junction. A bead is formed along at least one edge of the junction of the plastic materials as a result of the pressure of the two plastic materials bearing against one another. The welded junction is heated, optionally at elevated pressure, to at least its fusion temperature and is then rapidly cooled. The resulting weld has a high impact and dielectric strength and has a smooth overall appearance.

Abstract: A method and apparatus is disclosed for bonding two pieces of thermoplastic material to one another. The method includes the steps of heating the edges of the plastic materials to be joined to at least their fusing temperatures and then forcing the heated edge portions against one another to thereby form a bonded junction. A bead is formed along at least one edge of the junction of the plastic materials as a result of the pressure of the two plastic materials bearing against one another. The welded junction is heated, optionally at elevated pressure, to at least its fusion temperature and is then rapidly cooled. The resulting weld has a high impact and dielectric strength and has a smooth overall appearance.

Abstract: A battery jar cover having a guide device depending from the bottom thereof and positioned so as to extend about at least predetermined portions of the periphery of the cover and inwardly from the sides thereof. The guide device is shaped so that it extends downwardly from the bottom of the cover a greater degree adjacent the corners and to a lesser degree adjacent the central portion of each side. Thus, the shape of the depending guide varies in length from the corners to the center thereof along each side.

Abstract: A device and method for welding battery jar covers onto battery jars with the battery elements and terminal post in position within the jar and with a cover placed in position. The invention includes an exemplary welding apparatus that employs separate heating and clamping mechanisms on each side of the jar so that the cover does not have to be lifted completely off the jar during welding and this structure greatly reduces the time required to change over from one size to another thereby increasing the per unit processing capacity of the device. Further, in order that a variety of jar sizes be rapidly handled, two of the heating and clamping mechanisms are relatively long while the other two or relatively short and equal to the constant width dimension of batteries. The invention accomplishes the loading operation automatically and by not removing the cover fully from the jar better and more accurate welds are produced.

Abstract: A device for relaxing or removing tension in the side wall area adjacent and along a welded seam in thermoplastic containers.

Abstract: The present invention comprises a battery cover that provides a sliding seal about the terminal posts of battery elements within a battery jar so that axial movement between the cover and such posts can occur when welding battery covers in place onto battery jars or during use of the battery to absorb any axial motion of the terminal posts due to plate growth.Each opening is provided with upper and lower seals which together define a chamber between them and the outer surface of the terminal post. This chamber is connected by means of a passageway to an inlet port so that following insertion of the terminal post through the openings and through the upper and lower seals, sealant material can be inserted into that annular chamber. A complete seal will be provided about the periphery of the terminal post lying between the two seals that will allow relative movement between the cover and the terminal post.

Abstract: A reusable container is disclosed having a base and lid joined together along a tongue and groove arrangement. The base and lid include integrally formed male and female interlock portions which support the base and lid against severe impact forces. A metallic lock is used to hold the lid to the base.

Abstract: A battery jar cover designed to be welded onto a battery jar. The cover is provided with an alignment device spaced inwardly away from the outer edges of the cover around the periphery with predetermined portions contacting and engaging the interior wall surface of the battery jar forming a gap or space.