Pentair Filtration, Inc. Patent applications |
Patent application number | Title | Published |
20090236277 | Modular Drinking Water Filtration System with Internal Sealing Between Valve Spindle and Head - A rotary valve spindle for flow control in the head of a filter includes a unitary dual function seal that is carried by the spindle and seals against the inner surface of the filter head during spindle rotation between flow and no-flow positions. The dual function seal greatly simplifies manufacture and assembly of the valve. | 09-24-2009 |
20090236276 | Modular Drinking Water Filtration System with Adapter Rings for Replaceable Cartridges to Assure Proper Fit - A modular filter system using replaceable filter cartridges includes matching adaptor rings in the filter head and on the filter cartridge placed at selected circumferential positions to ensure proper cartridge fit and to provide a proprietary cartridge construction for selected users. The adaptor rings operate only to control cartridge to filter head fit and are not used to drive the rotary valve spindle. | 09-24-2009 |
20090236272 | Modular Drinking Water Filtration System with Keyed Attachment of Filter Head to Mounting Bracket and Modular Back Plates - A modular filter system using replaceable filter cartridges includes a mounting bracket for each filter cartridge and corresponding filter head that includes keyed attachment of the head to the mounting ring on the mounting bracket and modular attachment of the mounting bracket to the modular back plate. Back plates are also modular to permit assembly of a variety of multi-cartridge systems. | 09-24-2009 |
20090236271 | Modular Drinking Water Filtration System with Locking Arrangement to Assure Filter Cartridge Compatibility - A modular filter system using replaceable filter cartridges includes a locking arrangement that prevents rotation of the flow control valve spindle in the filter head, but includes an unlocking arrangement on the cartridge that unlocks the locking arrangement if the proper replacement cartridge is used. The locking arrangement may include spring biased locking pins carried on the filter head and matching unlocking pins on the filter cartridge to operate through an intermediate adaptor ring that is set on assembly to match the positions of the locking and unlocking pins. | 09-24-2009 |
20090065519 | Universal Lid Closure for Underground Landscape Boxes - A universal lid closure for underground landscape boxes that universally adapts to all underground landscape box sizes by the design of flexible flaps Mat extend radially outwardly from their attachments to the lid body. The flaps are preferably of varying lengths and widths. A plurality of flexible flaps prevent accidental lid removal by exerting resilient force at a precise angle on the underground landscape box wall. A lid top is provided to enclose all box opening circumferences in each box class, and the flexible flaps are molded at a precise angle to horizontal to deter fatigue within the flexible flap. | 03-12-2009 |