VALVE CAP

WIPO Patent Application WO/2005/108790

A1

There is disclosed a valve cap for sealing an aperture in a pump; a plugging assembly for use in a valve cap to provide a seal at an aperture in a pump; a docking unit for use with a plugging assembly for sealing an aperture in a pump; and a method of sealing an aperture in a pump. In an embodiment of the invention, a valve cap (10) for sealing an aperrture (12) in a pump is disclosed which comprises a valve plug (16) for locating against a wall (18) of the aperture, the plug including,a first engaging means (40); a compression unit (20) fastened to the pump, the compression unit including a plurality of springs (56) to apply a compressive load upon the plug and second engaging means (62, 64); a docking unit (24) for landing on the compression unit, the docking unit including one or more pistons (92) to apply a compressive load upon said springs and third engaging means (74, 76, 78); wherein said first and third engaging means sequentially interlock with said second engaging means to lock said plug to said compression unit and seal said plug against said aperture.

WO/2003/083303	SUBMERGED ELECTRO-HYDRAULIC DEVICE
WO/2006/027562	WELLBORE-EXTERNAL UNDERWATER PUMP
WO/2019/018565	HYDRAULIC PUMPING SYSTEM

KENNEDY GEORGE COULTER (GB)
SOURDOS GUILLAUME (FR)

PCT/GB2005/001673

November 17, 2005

May 04, 2005

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SPICKET VALVES & PUMPS LTD (GB)
KENNEDY GEORGE COULTER (GB)
SOURDOS GUILLAUME (FR)

F04B47/08; F04B53/00; F04B53/16; F04B53/22; (IPC1-7): F04B53/00; F04B53/22

US4516477A	1985-05-14
US3327643A	1967-06-27
GB2306607A	1997-05-07
US3435777A	1969-04-01
US6209445B1	2001-04-03

KENNEDYS PATENT AGENCY LIMITED (Glasgow G2 5QD, GB)

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