Machine element or mechanism – Gearing – Directly cooperating gears
Reexamination Certificate
2005-07-22
2009-06-09
Fenstermacher, David M (Department: 3656)
Machine element or mechanism
Gearing
Directly cooperating gears
C074S424790, C074S424940
Reexamination Certificate
active
07543516
ABSTRACT:
A system and method for automatically aligning the threads of a lead screw with the threads of a screw drive mechanism, the screw drive mechanism operating to translate the rotational motion of the lead screw into linear motion to expel the contents of a mounted syringe. The system comprises a driver position sensor for determining the position of the screw drive mechanism along the lead screw and a processor for receiving position signals from the driver position sensor, for determining a requisite rotation of the lead screw to ensure alignment of the two sets of threads, and for effectuating the requisite rotation of the lead screw to achieve that alignment. An automatic calibration routine is included that checks for variances in calibration of the system and if found, updates a conversion factor to restore accuracy. Various sensors are used to monitor the operation of components.
REFERENCES:
patent: 3654816 (1972-04-01), Beery et al.
patent: 3669440 (1972-06-01), Kartasuk et al.
patent: 3858581 (1975-01-01), Kamen
patent: 3977269 (1976-08-01), Linley, Jr.
patent: 3982220 (1976-09-01), Rozema et al.
patent: 4424720 (1984-01-01), Bucchianeri
patent: 4434677 (1984-03-01), Linley, Jr.
patent: 4544369 (1985-10-01), Skakoon et al.
patent: 4767406 (1988-08-01), Wadham et al.
patent: 4833384 (1989-05-01), Munro et al.
patent: 4838857 (1989-06-01), Strowe et al.
patent: 4919596 (1990-04-01), Slate et al.
patent: 5034004 (1991-07-01), Crankshaw
patent: 5101679 (1992-04-01), Smith et al.
patent: 5106375 (1992-04-01), Conero
patent: 5176646 (1993-01-01), Kuroda
patent: 5236416 (1993-08-01), McDaniel et al.
patent: 5545140 (1996-08-01), Conero et al.
patent: 5567122 (1996-10-01), Schulte
patent: 5713242 (1998-02-01), Kanner et al.
patent: 5879360 (1999-03-01), Crankshaw
patent: 5925018 (1999-07-01), Ungerstedt
patent: 5954697 (1999-09-01), Srisathapat et al.
patent: 6248093 (2001-06-01), Moberg
patent: 6575936 (2003-06-01), Kojima et al.
patent: 2002/0020234 (2002-02-01), Smith et al.
patent: 2004/0176725 (2004-09-01), Stutz, Jr. et al.
patent: 0 445 499 (1991-09-01), None
patent: 0 514 816 (1992-11-01), None
patent: 0514907 (1992-11-01), None
patent: 1110569 (2001-06-01), None
patent: 1066846 (2001-10-01), None
International Search Report, PCT/US2006/027780, International Filing Date: Jul. 19, 2006, Cardinal Health 303, Inc.
Cardinal Health 303, Inc.
Fenstermacher David M
McDermott & Will & Emery
LandOfFree
Dynamic lead screw thread engagement system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic lead screw thread engagement system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic lead screw thread engagement system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4090395