Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2004-05-18
2009-10-27
Douglas, Steven O (Department: 3771)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204180, C388S800000
Reexamination Certificate
active
07607437
ABSTRACT:
A method and apparatus for controlling a brushless DC (BLDC) motor over a wide range of angular speeds is presented. Analog magnetic sensors provide continuous signal measurements related to the rotor angular position at a sample rate independent of rotor angular speed. In one embodiment, analog signal measurements are subsequently processed using an arctangent function to obtain the rotor angular position. The arctangent may be computed using arithmetic computation, a small angle approximation, a polynomial evaluation approach, a table lookup approach, or a combination of various methods. In one embodiment, the BLDC rotor is used to drive a Roots blower used as a compressor in a portable mechanical ventilator system.
REFERENCES:
patent: 56614 (1866-07-01), Roots et al.
patent: 587907 (1897-08-01), Ames et al.
patent: 1769153 (1930-07-01), Meyer
patent: 2014932 (1935-09-01), Hallett
patent: 2787999 (1957-04-01), Bennett
patent: 3089638 (1963-05-01), Rose
patent: 3094274 (1963-06-01), Thompson
patent: 3371856 (1968-03-01), Thelen et al.
patent: 3459395 (1969-08-01), Scotto
patent: 3658443 (1972-04-01), Fumagalli
patent: 3941206 (1976-03-01), Halter
patent: 3986086 (1976-10-01), Muller
patent: 4053829 (1977-10-01), Maruo
patent: 4080103 (1978-03-01), Bird
patent: 4121578 (1978-10-01), Torzala
patent: 4215977 (1980-08-01), Weatherston
patent: 4220219 (1980-09-01), Flugger
patent: 4227869 (1980-10-01), Eriksson
patent: 4239039 (1980-12-01), Thompson
patent: 4267899 (1981-05-01), Wagner et al.
patent: 4323064 (1982-04-01), Hoenig et al.
patent: 4448192 (1984-05-01), Stawitcke et al.
patent: 4455132 (1984-06-01), Messori
patent: 4495947 (1985-01-01), Motycka
patent: 4564345 (1986-01-01), Mueller
patent: 4595349 (1986-06-01), Preston et al.
patent: 4609335 (1986-09-01), Uthoff, Jr.
patent: 4666384 (1987-05-01), Kaga et al.
patent: 4672622 (1987-06-01), Gurs et al.
patent: 4673058 (1987-06-01), Roberts et al.
patent: 4684330 (1987-08-01), Andersson et al.
patent: 4686999 (1987-08-01), Snyder et al.
patent: 4702240 (1987-10-01), Chaoui
patent: 4768934 (1988-09-01), Soeters, Jr.
patent: 4781541 (1988-11-01), Sohler et al.
patent: 4794922 (1989-01-01), DeVries
patent: 4844044 (1989-07-01), McGovern
patent: 4846302 (1989-07-01), Hetherington
patent: 4867151 (1989-09-01), Bird
patent: 4938670 (1990-07-01), Lee
patent: 4957107 (1990-09-01), Sipin
patent: 4975032 (1990-12-01), Arai et al.
patent: 5040959 (1991-08-01), Fukagawa
patent: 5056995 (1991-10-01), Tamura et al.
patent: 5131829 (1992-07-01), Hampton
patent: 5145349 (1992-09-01), McBurnett
patent: 5152684 (1992-10-01), Steffens
patent: 5161525 (1992-11-01), Kimm et al.
patent: 5211170 (1993-05-01), Press
patent: 5222148 (1993-06-01), Yuan
patent: 5237987 (1993-08-01), Anderson et al.
patent: 5239994 (1993-08-01), Atkins
patent: 5272429 (1993-12-01), Lipo et al.
patent: 5335651 (1994-08-01), Foster et al.
patent: 5350888 (1994-09-01), Sager, Jr. et al.
patent: 5398676 (1995-03-01), Press et al.
patent: 5439358 (1995-08-01), Weinbrecht
patent: 5542416 (1996-08-01), Chalvignac
patent: 5577152 (1996-11-01), Chen
patent: 5582163 (1996-12-01), Bonassa
patent: 5632270 (1997-05-01), O'Mahony et al.
patent: 5638600 (1997-06-01), Rao et al.
patent: 5664563 (1997-09-01), Schroeder et al.
patent: 5687717 (1997-11-01), Halpern et al.
patent: 5694926 (1997-12-01), DeVries et al.
patent: 5701883 (1997-12-01), Hete et al.
patent: 5702240 (1997-12-01), O'Neal et al.
patent: 5760348 (1998-06-01), Heuser
patent: 5763792 (1998-06-01), Kullik
patent: 5783782 (1998-07-01), Sterrett et al.
patent: 5823186 (1998-10-01), Rossen et al.
patent: 5831223 (1998-11-01), Kesselring
patent: 5868133 (1999-02-01), DeVries et al.
patent: 5881722 (1999-03-01), DeVries et al.
patent: 5918597 (1999-07-01), Jones et al.
patent: 5931159 (1999-08-01), Suzuki et al.
patent: 5944501 (1999-08-01), Yokoi
patent: 6009871 (2000-01-01), Kiske et al.
patent: 6076523 (2000-06-01), Jones et al.
patent: 6099277 (2000-08-01), Patel et al.
patent: 6102038 (2000-08-01), DeVries
patent: 6125844 (2000-10-01), Samiotes
patent: 6152129 (2000-11-01), Berthon-Jones
patent: 6152135 (2000-11-01), DeVries et al.
patent: 6155257 (2000-12-01), Lurie et al.
patent: 6158430 (2000-12-01), Pfeiffer et al.
patent: 6158434 (2000-12-01), Lugtigheid et al.
patent: 6164412 (2000-12-01), Allman
patent: 6176693 (2001-01-01), Conti
patent: 6237592 (2001-05-01), Surjadi et al.
patent: 6279574 (2001-08-01), Richardson et al.
patent: 6283246 (2001-09-01), Nishikawa
patent: 6305372 (2001-10-01), Servidio
patent: 6354558 (2002-03-01), Li
patent: 6384554 (2002-05-01), Karwath et al.
patent: 6412483 (2002-07-01), Jones et al.
patent: 6474960 (2002-11-01), Hansmann
patent: 6484719 (2002-11-01), Berthon-Jones
patent: 6526970 (2003-03-01), DeVries et al.
patent: 6543449 (2003-04-01), Woodring et al.
patent: 6558137 (2003-05-01), Tomell et al.
patent: 6564798 (2003-05-01), Jalde
patent: 6571792 (2003-06-01), Hendrickson et al.
patent: 6571796 (2003-06-01), Banner et al.
patent: 6591835 (2003-07-01), Blanch
patent: 6615831 (2003-09-01), Tuitt et al.
patent: 6619286 (2003-09-01), Patel
patent: 6626175 (2003-09-01), Jafari et al.
patent: 6629525 (2003-10-01), Hill et al.
patent: 6629531 (2003-10-01), Gleason et al.
patent: 6629934 (2003-10-01), Mault et al.
patent: 6631716 (2003-10-01), Robinson et al.
patent: 6637430 (2003-10-01), Voges et al.
patent: 6651658 (2003-11-01), Hill et al.
patent: 6666209 (2003-12-01), Bennett et al.
patent: 6672300 (2004-01-01), Grant
patent: 6691702 (2004-02-01), Appel et al.
patent: 6691707 (2004-02-01), Gunaratnam et al.
patent: 6708690 (2004-03-01), Hete et al.
patent: 6745770 (2004-06-01), McAuliffe et al.
patent: 6752240 (2004-06-01), Schlagenhaft
patent: 6764534 (2004-07-01), McCombs et al.
patent: 6770037 (2004-08-01), Sullivan et al.
patent: 6782888 (2004-08-01), Friberg et al.
patent: 6802225 (2004-10-01), Shahar et al.
patent: 6820618 (2004-11-01), Banner et al.
patent: 6837260 (2005-01-01), Kuehn
patent: 6877511 (2005-04-01), DeVries et al.
patent: 6968842 (2005-11-01), Truschel et al.
patent: 7004908 (2006-02-01), Sullivan et al.
patent: 7011092 (2006-03-01), McCombs et al.
patent: 7032589 (2006-04-01), Kerechanin et al.
patent: 7063084 (2006-06-01), McDonald
patent: 7066178 (2006-06-01), Gunaratnam et al.
patent: 7066985 (2006-06-01), Deane et al.
patent: 7073499 (2006-07-01), Reinhold et al.
patent: 7086366 (2006-08-01), Killion
patent: 7118536 (2006-10-01), Haberland et al.
patent: 7121276 (2006-10-01), Jagger et al.
patent: 7168429 (2007-01-01), Matthews et al.
patent: 7171963 (2007-02-01), Jagger et al.
patent: 7183681 (2007-02-01), Segawa et al.
patent: 7188621 (2007-03-01), DeVries et al.
patent: 7225809 (2007-06-01), Bowen et al.
patent: 7226280 (2007-06-01), Yokoi
patent: 7329304 (2008-02-01), Bliss et al.
patent: 7331342 (2008-02-01), Spearman et al.
patent: 7335243 (2008-02-01), Homan et al.
patent: 7351034 (2008-04-01), Cens et al.
patent: 7368005 (2008-05-01), Bliss et al.
patent: 2001/0044588 (2001-11-01), Mault
patent: 2002/0014870 (2002-02-01), Krotsch et al.
patent: 2002/0134378 (2002-09-01), Finnegan et al.
patent: 2003/0057904 (2003-03-01), Sacher
patent: 2003/0208113 (2003-11-01), Mault et al.
patent: 2004/0074495 (2004-04-01), Wickham et al.
patent: 2004/0147818 (2004-07-01), Levy et al.
patent: 2004/0211422 (2004-10-01), Arcilla et al.
patent: 2004/0221854 (2004-11-01), Hete et al.
patent: 2004/0226562 (2004-11-01), Bordewick
patent: 2005/0112013 (2005-05-01), DeVries et al.
patent: 2005/0124866 (2005-06-01), Elaz et al.
patent: 2005/0166921 (2005-08-01), DeVries et al.
patent: 2005/0188991 (2005-09-01), Sun et al.
patent: 2005/0241642 (2005-11-01), Krzysztofik
patent: 2006/0065672 (2006-03-01), Lecourt et al.
patent: 2006/0069326 (2006-03-01), Heath
patent: 2006/0070624 (2006-04-01), Kane et al.
patent: 2006/0124128 (2006-06-01), Deane et al.
patent: 2006/0144396 (2006-07-01), DeVries et al.
patent: 2006/0144399 (2006-07-01), Davidowski et al.
patent: 2006/0144405 (2006-07-01), Gunaratnam et al.
patent: 2006/0150973 (2006-07-01), Chalvignac
patent: 2006/01748
Boyle David
Holmes Michael
Williams Malcolm
Baker & Hostetler LLP
Cardinal Health 203, Inc.
Dixon Annette F
Douglas Steven O
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