Spring return actuator for a damper

Details Spring return actuator for a damper Spring return actuator for a damper

2005-12-27

2005-12-27

Ip, Paul (Department: 2837)

Electricity: motive power systems

Having rotor element biased against rotation

By resilient biasing means

C318S159000, C318S376000, C137S001000, C137S129000, C137S129000, C307S064000, C307S066000

Reexamination Certificate

active

06979965

ABSTRACT:
An actuator including an electric motor driven by a drive circuit powered by a power source, and a load coupled to the electric motor. The actuator further includes a spring biasing the load to a first position, and a microcontroller coupled to the electric motor to commutate the electric motor. Upon failure of the power source, the spring returns the damper to the first position, and, as the spring returns the load to the first position, the electric motor is spun to generate electricity that is used to power the microcontroller. The microcontroller can govern a speed at which the spring returns the load to the first position. In addition, a potentiometer can be used to indicate when the load approaches the first position so that the microcontroller can slow the speed of return prior to the load reaching the first position.

REFERENCES:
patent: 3974427 (1976-08-01), Carson
patent: 4177716 (1979-12-01), Bowe et al.
patent: 4205783 (1980-06-01), Dietsche et al.
patent: 4417288 (1983-11-01), Hattori et al.
patent: 4423364 (1983-12-01), Kompelien et al.
patent: 4439139 (1984-03-01), Nelson et al.
patent: 4556169 (1985-12-01), Zervos
patent: 4572333 (1986-02-01), Westley
patent: 4613798 (1986-09-01), Baumann
patent: 4677355 (1987-06-01), Baumann
patent: 4771643 (1988-09-01), Mott
patent: 5081405 (1992-01-01), Nelson
patent: 5096156 (1992-03-01), Wylie et al.
patent: 5100101 (1992-03-01), Shah
patent: 5131623 (1992-07-01), Giordani
patent: 5182498 (1993-01-01), Stuhr
patent: 5278454 (1994-01-01), Strauss et al.
patent: 5328150 (1994-07-01), Guativa
patent: 5363025 (1994-11-01), Colling
patent: 5519295 (1996-05-01), Jatnieks
patent: 5540414 (1996-07-01), Giordani et al.
patent: 5550449 (1996-08-01), Ege et al.
patent: 5635809 (1997-06-01), Ganser et al.
patent: 5723918 (1998-03-01), Schilling et al.
patent: 5872434 (1999-02-01), Hill
patent: 5986369 (1999-11-01), Hanley et al.
patent: 6051948 (2000-04-01), Vepy
patent: 6058726 (2000-05-01), Noritake
patent: 6100655 (2000-08-01), McIntosh
patent: 6184604 (2001-02-01), Takano et al.
patent: 6244564 (2001-06-01), Noritake
patent: 6249100 (2001-06-01), Lange
patent: 6250323 (2001-06-01), Genga et al.
patent: 6369540 (2002-04-01), Lange et al.
patent: 6373207 (2002-04-01), Yablonovitch
patent: 6495981 (2002-12-01), Romanowich et al.
patent: 2002/0109473 (2002-08-01), Romanowich et al.
patent: 2004/0084542 (2004-05-01), DeYoe et al.
patent: 0847132 (1998-06-01), None
patent: 2003-322395 (2003-11-01), None
patent: WO 01/90621 (2001-11-01), None
Belimo Model AF24-SR US, AFR24-SR US product information sheets, pp. 14-15, D20230 / 5 4 3 2 1 -05/02-10M-EG-Subject to change. © Belimo Aircontrols (USA), Inc., May 2002.
Kele Solutions product information sheets forSiemensSpring Return Direct Coupled Actuators, GMA, GCA Series; 2 pages; http://www.kele.com, Dec. 2001.
Pacific Liquid & Air Systems, Pumps—Motors—Controls, Article:The Three Phase Induction Motor,Author: Joe Evans, Ph.D., 6 pages; http://www.pacificliquid.com, no date.
e-insite internet article;Circuit Forms DC-Motor Switch with Brake,edited by Bill Travis, authored by JB Guiot, DCS AG, Allschwil, Switzerland—EDN, Jan. 10, 2002, 2 pages; viewed Mar. 13, 2003 at e-insite website: http://www.e-insite.net/ednmag/index.asp?layout=article&articleid=CA 189474.
Industrial Technology website: http://www.industrialtechnology.co.uk/1998/oct/siemens.html; viewed Mar. 13, 2003:Electric Braking Techniques,2 pages, Oct. 1998.
Embedded.com website: http://www.embedded.com/2000/0008/0008spectra.htm; EmbeddedSystems Programming article:Spectra Motor Rotation Control,author: Don Morgan, viewed Feb. 29, 2003, 5 pages.
Copy of U.S. Appl. No. 10/423,029, filed Apr. 24, 2003, entitled: Current Control Loop for Actuator and Method.

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