Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2005-08-23
2005-08-23
Freay, Charles G. (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S416000, C310S012060, C604S151000
Reexamination Certificate
active
06932584
ABSTRACT:
A drive mechanism for delivery of infusion medium a coil capable of being electrically activated to provide an electromagnetic field. The coil surrounds a piston channel extending in an axial direction. An armature is located adjacent the coil, on one side of the axial channel. The armature is moveable toward a forward position, in response to the electromagnetic field produced by activation of the coil. A piston is located within the piston channel and is moveable axially within the channel to a forward position, in response to movement of the armature to its forward position. The armature and piston are moved toward a retracted position, when the coil is not energized. The armature may be configured with a reduced diameter by including a coil cup for supporting the coil including a shelf portion defining at least a portion of a pole surface of the coil cup.
REFERENCES:
patent: 4021152 (1977-05-01), Toyoda
patent: 4193397 (1980-03-01), Tucker et al.
patent: 4245789 (1981-01-01), Gray
patent: 4373527 (1983-02-01), Fischell
patent: 4391620 (1983-07-01), Geisel
patent: 4437815 (1984-03-01), McMullen
patent: 4468221 (1984-08-01), Mayfield
patent: 4557726 (1985-12-01), Reinicke
patent: 4568250 (1986-02-01), Falk et al.
patent: 4569641 (1986-02-01), Falk et al.
patent: 4573994 (1986-03-01), Fischell et al.
patent: 4576556 (1986-03-01), Thompson
patent: 4594058 (1986-06-01), Fischell
patent: 4636150 (1987-01-01), Falk et al.
patent: 4684368 (1987-08-01), Kenyon
patent: 4692147 (1987-09-01), Duggan
patent: 4697622 (1987-10-01), Swift et al.
patent: 4714234 (1987-12-01), Falk et al.
patent: 4808089 (1989-02-01), Buchholtz et al.
patent: 4883467 (1989-11-01), Franetzki et al.
patent: 4985015 (1991-01-01), Obermann et al.
patent: 5167633 (1992-12-01), Mann et al.
patent: 5176644 (1993-01-01), Srisathapat et al.
patent: 5318521 (1994-06-01), Slettenmark
patent: 5492449 (1996-02-01), Hunklinger et al.
patent: 5514103 (1996-05-01), Srisathapat et al.
patent: 5527307 (1996-06-01), Srisathapat et al.
patent: 5797733 (1998-08-01), Falk et al.
patent: 5975437 (1999-11-01), Streicher et al.
patent: 6142445 (2000-11-01), Kawaguchi et al.
patent: 6193477 (2001-02-01), Falk et al.
patent: 6227818 (2001-05-01), Falk et al.
patent: 6595756 (2003-07-01), Gray et al.
patent: 6652252 (2003-11-01), Zabar
patent: 6770067 (2004-08-01), Lorenzen et al.
Bosley Robert W.
Gray John
Lorenzen Eric
Foley & Lardner LLP
Freay Charles G.
Medtronic Minimed Inc.
LandOfFree
Infusion device and driving mechanism and process for same... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Infusion device and driving mechanism and process for same..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infusion device and driving mechanism and process for same... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3470731