Metal working – Means to assemble or disassemble – Means to assemble electrical device
Patent
1976-07-12
1978-01-10
Hall, Carl E.
Metal working
Means to assemble or disassemble
Means to assemble electrical device
295274, H02K 1510
Patent
active
040671062
ABSTRACT:
Pushers or push rods for insulator and/or insulator and winding placing apparatus are manufactured by selecting an aluminum based alloy and extruding it to establish a length of material having an extruded cross-sectional configuration approximately corresponding to any cross-sectional configuration desired for an insulator pusher. Thereafter, a final desired length of insulating pushers is established, e.g., by cutting and finish milling sections of the extrusion to a desired finished length. Thereafter, the wedge pushing or leading end of the insulator pusher is machined when it is to have a shape other than the raw extrusion shape; and a trailing portion of the pusher is also machined so that it will interfit with a pusher drive mechanism. The extruded member is then treated to remove any sharp edges, burrs, or foreign matter occlusions in the extruded stock (e.g., by passing it over a nylon textured wheel). At least those portions of the wedge that are subjected to sliding wear during use are hard coat anodized and also treated to improve the hardness and lubricity thereof. The corundum (or alpha aluminum) that forms the anodized aluminum surface is relatively porous, hard, somewhat brittle, and not characterized by particularly good lubricity characteristics. After being surface treated, the insulator pushers are assembled into any desired piece of equipment that makes use of such parts.
REFERENCES:
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patent: 3694887 (1972-10-01), Walker et al.
patent: 3698063 (1972-10-01), Smith
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patent: 3831255 (1974-08-01), Smith et al.
"Answers to Your Question About Nituff.RTM.", Nimet Industries, Inc., 1969.
"Modern Metals", Magazine, pp. 46-47, May, 1976.
"Metal Finishing Guide Book and Directory", pp. 493-495, 1975.
Bale Richard W.
Brown Ronald H.
General Electric Company
Hall Carl E.
Krisher, Jr. Ralph E.
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