Method of making a knockdown centralizer

Details Method of making a knockdown centralizer Method of making a knockdown centralizer

1979-08-16

1981-03-17

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29463, 29505, B23P 900

Patent

active

042558476

ABSTRACT:
An improved centralizer includes upper and lower collars with a plurality of spring members attached at upper and lower ends to said collars. Each of said collars includes a first and second arcuate collar portion. A first peripheral end portion of said first collar portion includes a radially outward projecting channel. A second peripheral end portion of said second arcuate collar portion includes a radially inward projecting channel which overlaps with said outward projecting channel to define an axially extending hole which receives a latch pin. A novel connection between the collars and spring members is also provided. The collars include a continuous integrally formed peripherally extending bar spaced radially outward from a radially outer surface of the collars, upper and lower peripheral slots adjacent upper and lower edges of the bar and an upper compression bearing surface. An end of each spring member includes a radially inward projecting peripherally extending channel having a middle part with first and second legs projecting from said middle part, so that said peripherally extending bar is received within said peripherally extending channel.

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patent: 4088186 (1978-05-01), Callihan
patent: 4143713 (1979-03-01), Kreft

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