Seal head for tube expansion apparatus

(19)

(11)

EP 0 740 970 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	14.01.1998 Bulletin 1998/03

(43)	Date of publication A2:
	06.11.1996 Bulletin 1996/45

(21)	Application number: 96202318.0

(22)	Date of filing: 10.04.1992

(51)	International Patent Classification (IPC)⁶: B21D 26/02

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR GB GR IT LI LU MC NL PT SE

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	92303228.8 / 0564732

(71)	Applicant: TI Corporate Services Limited
	London W1Y 7PN (GB)

(72)	Inventors:
	Klages, Gerrald A. Woodstock, Ontario N4S 2E8 (CA) Krasnicki, Frank S. Kitchener, Ontario N2E 2K2 (CA) Mason, Murray R. Woodstock, Ontario N4S 7W3 (CA)

(74)	Representative: Watts, Peter Graham
	Anthony Cundy & Co., 1623 Warwick Road Knowle, Solihull, West Midlands B93 9LF Knowle, Solihull, West Midlands B93 9LF (GB)


	Remarks:
	This application was filed on 20 08 1996 as a divisional application to the application mentioned under INID code 62.

(54)	Seal head for tube expansion apparatus

(57) An apparatus is provided for the filling and pressurisation of a tube (20) with fluid the apparatus having a high pressure connection including a shaft (1), and sealing means (11) for sealing the tube (20) when the shaft (1) is advanced into engagement with the tube (20), the shaft (1) being formed by a rod (2), a sleeve (3) located outwards of the rod (2), a rod ring (9) being connected at a forward end of the rod (2) and a sleeve ring (10) being connected at a forward end of the sleeve (3), an elastomeric sealing ring (11) is located between the rod ring (9) and sleeve ring (10). Means is provided for moving the sleeve (3) axially with respect to the rod (2) to compress the elastomeric ring (11) so that it expands into engagement with the tube (2).

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