Lewis Illingworth — 31 Patents at Vortex

Lewis Illingworth has been granted 31 US patents while listed as an inventor at Vortex. The first was granted in 1987 and the most recent in December 2006. Lewis Illingworth ranks #115,823 of 4,157,543 US inventors in our database (top 2.8%). Patent records list Lewis Illingworth in Exeter, NH, US.

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #	Title	Co-Inventors	Date
7143468	Vortex vacuum cleaner nozzle with means to prevent plume formation	David Reinfeld	2006-12-05
6960063	Vortex attractor without a backplate	David Reinfeld	2005-11-01
6957472	Cannister and upright vortex vacuum cleaners	David Reinfeld	2005-10-25
6896104	Flat spool elastic motor having time-averaged constant torque output	—	2005-05-24
6881025	Suction cup vortex attractor	David Reinfeld	2005-04-19
6811687	Vortex pool cleaner	—	2004-11-02
6802693	Vortex attractor with vanes attached to containing ring and backplate	David Reinfeld	2004-10-12
6802881	Rotating wave dust separator	David Reinfeld	2004-10-12
6742626	Elastic motor having time-averaged constant torque output	—	2004-06-01
6729839	Toroidal and compound vortex attractor	David Reinfeld	2004-05-04
6719830	Toroidal vortex vacuum cleaner centrifugal dust separator	David Reinfeld	2004-04-13
6689225	Toroidal vortex vacuum cleaner with alternative collection apparatus	—	2004-02-10
6687951	Toroidal vortex bagless vacuum cleaner	David Reinfeld	2004-02-10
6623352	Vortex air barrier	—	2003-09-23
6619922	Vortex attractor for planar and non-planar surfaces	David Reinfeld	2003-09-16
6616094	Lifting platform	—	2003-09-09
6612402	Elastic motor with constant torque output	—	2003-09-02
6595753	Vortex attractor	David Reinfeld	2003-07-22
6565321	Vortex attractor	David Reinfeld	2003-05-20
6543726	Fluid flow straightening techniques	—	2003-04-08
6520449	Lifting platform with positive horizontal stability	—	2003-02-18
6497553	Vortex attractor	David Reinfeld	2002-12-24
6464459	Lifting platform with energy recovery	—	2002-10-15
6388393	Ballasts for operating light emitting diodes in AC circuits	—	2002-05-14
6282111	Inverter control using current mode slope modulation	—	2001-08-28

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Lewis Illingworth — 31 Patents

Issued Patents All Time

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