Title:
KEYED SYSTEM FOR CONNECTION OF FILTER CARTRIDGE TO FILTER HOLDER
Document Type and Number:
WIPO Patent Application WO2002013944
Kind Code:
A3
Abstract:
Embodiments of a key system for filters and their connecting heads/holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding "key" and one being a recessed "lock". Cooperation of these keyed surfaces is requied in order for the filter cartridge to be installed in the holder, so that mis-matched cartridges cannot be installed into the holder, for example, to prevent a particular type of cartridge from being placed in a filtration or other process where it would be inappropriate, or undesired. The keyed surfaces are selectively locate-able preferably at different circumferential locations on a perimeter of the filter and a corresponding location on a perimeter of the head/holder. The perimeter may be, for example, on an outer shoulder surface of a filter and an inner surface of a valve head, or on outer and inner surfaces of connectors that provide a liquid seal between the filter and the head/holder.
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Inventors:
REID ROGER P (US)
Application Number:
PCT/US2001/025307
Publication Date:
July 18, 2002
Filing Date:
August 11, 2001
Export Citation:
Assignee:
REID ROGER P (US)
International Classes:
B01D27/08; B01D35/30; B01D46/00; B01D46/24; F16B3/00; B01D46/42; (IPC1-7): B01D46/42; B01D46/24; B01D27/08; B01D29/11
Foreign References:
| DE19960600A1 | 2001-06-21 | |||
| DE19827297A1 | 1999-12-23 | |||
| EP0231862A2 | 1987-08-12 | |||
| EP0278771A1 | 1988-08-17 | |||
| US5114572A | 1992-05-19 |
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