Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Patent
1987-03-23
1988-08-09
Bray, W. Donald
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
72 62, 72393, 29237, 291574, 294211, B21D 2200
Patent
active
047619813
ABSTRACT:
A swaging mandrel is inserted in a tube confined by a tube sheet or other surrounding structure. A pair of seals define the axial limits of a hydraulic pressure zone within the tube sheet in which radial expansion of the tube takes place in response to fluid pressure. At one side of the tube sheet, an elastomeric ring can extend beyond the tube sheet and, in response to the fluid pressure, produce an attenuated radial expansion force that bulges the tube. At the primary side of the tube sheet, an elastomeric ring, in response to the fluid pressure, causes arcuate segments of a cylinder positioned beyond the tube sheet to expand radially and flare the tube at the opposite side of the tube sheet.
REFERENCES:
patent: 3466920 (1969-09-01), Parker
patent: 4262518 (1981-04-01), Creger et al.
patent: 4320568 (1982-03-01), Herrod et al.
patent: 4359889 (1982-11-01), Kelly
patent: 4387507 (1983-06-01), Kelly
patent: 4388752 (1983-06-01), Vinciguerra
patent: 4502308 (1985-03-01), Kelly
patent: 4513506 (1985-04-01), Vogeleer
patent: 4567631 (1986-02-01), Kelly
patent: 4581817 (1986-03-01), Kelly
patent: 4607426 (1986-08-01), Kelly
Bray W. Donald
Haskel, Inc.
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