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Fuel Cells

Separator-basket-preforms-for-primary-cells-and-methods-of-forming-and-inserting-same

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Separator basket preforms for primary cells and methods of forming and inserting same

Details

Inventors: Simonton, R. D.; Cattano, John D.; Mason, Robert K.;
Assignee: Fremont Special Machine Co., Inc. (Fremont, OH)
Primary Examiner: Walton; Donald L.
Assistant Examiner:
Attorney, Agent or Firm: Wilson; David H.

A system of forming and manipulating primary cell separator basket preforms produced in strip form and tandem relationship with a dentent associated with each preform, e.g., a transverse slit in the strip for each preform displaced so its edge is outstanding from the generally flat strip. The preforms are fed to forming and insertion equipment by guiding the strip into alignment with a cut-off which is arranged to sever the lead preform and into alignment with a forming and insertion mandrel path of travel, engaging a detent on the strip with a dog and advancing the dog and strip along the path to present the lead preform for cut-off, opening and mandrel insertion. The severed preform is supported and compressed transversely between a support member having a groove to embrace a side portion of the preform and the dog or dog and cut-off blade so that it is opened and restained to receive the forming and insertion mandrel. Further restraint of the preform motion along the mandrel insertion path is provided by a support across that path which is displaced by mandrel advance toward a cell subassembly adapted to receive the separator basket.

DETAILED DESCRIPTION What is claimed is: 1.
An elongate strip of a plurality of preforms for primary cell separator baskets comprising first and second walls of ionically permeable sheet material, said second wall overlaying said first wall; a joint between said first and second walls along one longitudinal margin of said strip; a bond for each of said preforms extending transverse of said strip between said first and second walls; and at least one of said walls having a detent associated with each preform of said strip to facilitate the feed of said strip in processing said preform.
2.
A strip according to claim 1 wherein said joint is a longitudinal fold of an elongate ribbon of ionically permeable sheet material and said first and second walls are the longitudinal sides of said ribbon of sheet material; wherein said bonds extend perpendicular to and continuously from said joint to a longitudinal margin of said ribbon of sheet material; and including for each of said preforms a second bond extending perpendicular to and continuously from said joint to a longitudinal margin of said ribbon of sheet material; said detent being located between the first bond of one preform and the second bond of a second preform adjacent said first preform.
3.
A strip according to claim 1 wherein said detent is an edge of said sheet material.
4.
A strip according to claim 3 wherein said edge is at least in part perpendicular to the length of said strip.
5.
A strip according to claim 3 wherein said edge of sheet material is displaced from adjacent major surface of said strip.
6.
A strip according to claim 5 wherein said displaced edge is displaced outward from the adjacent major surface of said strip.
7.
A strip according to claim 2 wherein said detent is an edge of said sheet material bounding a slit in a wall perpendicular to the longitudinal margin of said ribbon of sheet material.
8.
A strip according to claim 2 wherein said detent is an edge of said sheet material bounding a slit in said first and second walls of said ribbon of said strip of preforms

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