Apparatus and process for selectively expanding to join one tube

Details Apparatus and process for selectively expanding to join one tube Apparatus and process for selectively expanding to join one tube

1982-01-25

1983-12-20

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

292835, 29523, 72 58, B23P 1700, B21D 3908, B21D 3920

Patent

active

044208669

ABSTRACT:
An apparatus and process for expanding a tube at selective points about its circumference to join with another tube. After a segment of a first tube is inserted into a second tube having an end sleeve segment with a larger diameter and wall thickness than the first tube, compression and subsequent radial expansion of one or more elastomeric bars lodged within longitudinal slots of a bushing means locted within the first tube end segment cause the elastomer to radially expand the wall of the first tube. The wall of the first tube expands at selective points against the wall of the second tube in proximity to their respective ends, creating a selective interference fit therebetween.

REFERENCES:
patent: 2458854 (1949-01-01), Hull et al.
patent: 2535403 (1950-12-01), Froggartt
patent: 2748463 (1956-06-01), Mueller
patent: 3094773 (1963-06-01), Bukoff
patent: 3103068 (1963-09-01), Hinz et al.
patent: 3113377 (1963-12-01), Oakes, Jr.
patent: 3152630 (1964-10-01), Nilsson
patent: 4069573 (1978-01-01), Rogers, Jr. et al.
patent: 4075755 (1978-02-01), Bernatt et al.
patent: 4152821 (1979-05-01), Scott

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