Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1994-05-24
1996-04-30
Jones, David
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72 58, 72 60, 294211, B21D 3908
Patent
active
055114040
ABSTRACT:
Apparatus for fluid filling and pressurizing a tube having a high pressure-low flow fluid circuit in the form of a shaft having a longitudinal bore communicating with a high pressure fluid source, a tube seal device adjacent the forward end of the shaft for sealing the tube when the shaft is engaged with the tube and high pressure fluid flows into the tube, and a device for reciprocating the shaft to advance and retract the shaft toward and away from the tube. A high flow low pressure circuit has a shroud for housing the forward end of the shaft when retracted and a rearward opening slidably and sealably engaging the shaft rearward of the tube seal device. The interior of the shroud communicates with a high flow-low pressure fluid source for sealing an external surface adjacent an end of the tube. In operation the shroud is advanced to seal the external surface; the tube is filled with low pressure fluid at a high flow rate, the shaft is advanced, the tube seal engaged, the tube is pressurized, and the process is reversed to release the tube.
REFERENCES:
patent: 2203868 (1940-06-01), Gray et al.
patent: 2837810 (1958-06-01), Ekholm
patent: 3542076 (1970-11-01), Richardson
patent: 3625040 (1971-12-01), Gain
patent: 4761981 (1988-08-01), Kelly
patent: 4761982 (1988-08-01), Snyder
patent: 4827605 (1989-05-01), Krips et al.
patent: 5235836 (1993-08-01), Klages et al.
Klages Gerrald A.
Krasnicki Frank S.
Mason Murray R.
Jones David
TI Corporate Services Limited
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