Electricity: motive power systems – Braking – Dynamic braking
Reexamination Certificate
2006-02-21
2006-02-21
Martin, David (Department: 2837)
Electricity: motive power systems
Braking
Dynamic braking
C318S116000, C318S118000, C318S119000, C318S376000, C310S026000, C310S300000, C310S311000, C310S316010
Reexamination Certificate
active
07002310
ABSTRACT:
The position and speed and, in some embodiments, direction of rotation of a motor for turning the rod of an object such as a window covering is determined by placing a braking magnet next to the motor and a piezoelectric element between the braking magnet and motor. As the motor rotates, the piezoelectric element generates a signal that can be used to determine the speed of rotation and also the position of the motor (and, hence, the position of the object being moved). The magnet brakes the motor from turning under the weight of the object when the motor is deenergized.
REFERENCES:
patent: 2341440 (1944-02-01), Hammer
patent: 3104700 (1963-09-01), Polsky
patent: 3352349 (1967-11-01), Hennequin
patent: 3732447 (1973-05-01), Perhats
patent: 4103191 (1978-07-01), Kawamura et al.
patent: 4522244 (1985-06-01), Brolin
patent: 4590814 (1986-05-01), Wadensten
patent: 5590814 (1986-05-01), Wadenstein
patent: 4623012 (1986-11-01), Rude et al.
patent: 4677378 (1987-06-01), Tokura et al.
patent: 4916825 (1990-04-01), Breyer
patent: 4922198 (1990-05-01), Sandhagen et al.
patent: 5038087 (1991-08-01), Archer et al.
patent: 5087845 (1992-02-01), Behrens
patent: 5184660 (1993-02-01), Jelic
patent: 5228491 (1993-07-01), Rude et al.
patent: 5237861 (1993-08-01), Suda et al.
patent: 5444339 (1995-08-01), Domel et al.
patent: 5467266 (1995-11-01), Jacobs et al.
patent: 5542506 (1996-08-01), McMichael et al.
patent: 5543672 (1996-08-01), Nishitani et al.
patent: 5714820 (1998-02-01), Mitsuhashi et al.
patent: 5848634 (1998-12-01), Will et al.
patent: 6095223 (2000-08-01), Rossini et al.
patent: 6316862 (2001-11-01), Nakata et al.
patent: 6332491 (2001-12-01), Rossini
patent: 6714733 (2004-03-01), Kobayashi
patent: 6870338 (2005-03-01), Walker et al.
patent: 6924615 (2005-08-01), Cavarec et al.
patent: 3232820 (1984-01-01), None
patent: 29509638 (1996-11-01), None
patent: 0 182 997 (1985-09-01), None
patent: 0381643 (1990-08-01), None
patent: 0859224 (1998-08-01), None
patent: 29028 (1983-01-01), None
patent: 109484 (1985-01-01), None
patent: 192987 (1989-01-01), None
patent: 363495 (1992-01-01), None
Cavarec Pierre-Emmanuel
Walker Winston Glenn
Frommer & Lawrence & Haug LLP
Martin David
Santucci Ronald R.
Smith Tyrone
SOMFY SAS
LandOfFree
Piezo-based encoder with magnetic brake for powered window... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezo-based encoder with magnetic brake for powered window..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezo-based encoder with magnetic brake for powered window... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3628461