The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2007
Filed:
Sep. 14, 2004
Nigel V. Spurr, Shirley, GB;
Michael J. Shelley, Fauldhouse, GB;
Richard T. Hayes, Motherwell, GB;
William F. Eaton, Pearl City, IL (US);
Hugh D. Gibson, Edinburgh, GB;
Alex Crawford, East Kilbride, GB;
Ajaykumar Vaidhyanathan, Chennai, TN (US);
Scott A. Vorwald, Lena, IL (US);
Kenneth V. Bechtold, Freeport, IL (US);
Curtis B. Johnson, Freeport, IL (US);
Duncan S. Murchie, Crieff, GB;
Daniel D. Kilker, University Park, FL (US);
Abanni B. Maxwell, Rockford, IL (US);
Patrick H. Shannon, Motherwell, GB;
Gillian J. Madden, Bothwell, GB;
Nigel V. Spurr, Shirley, GB;
Michael J. Shelley, Fauldhouse, GB;
Richard T. Hayes, Motherwell, GB;
William F. Eaton, Pearl City, IL (US);
Hugh D. Gibson, Edinburgh, GB;
Alex Crawford, East Kilbride, GB;
Ajaykumar Vaidhyanathan, Chennai, TN (US);
Scott A. Vorwald, Lena, IL (US);
Kenneth V. Bechtold, Freeport, IL (US);
Curtis B. Johnson, Freeport, IL (US);
Duncan S. Murchie, Crieff, GB;
Daniel D. Kilker, University Park, FL (US);
Abanni B. Maxwell, Rockford, IL (US);
Patrick H. Shannon, Motherwell, GB;
Gillian J. Madden, Bothwell, GB;
Honeywell International Inc., Morristown, NJ (US);
Abstract
Latch control methods and systems are disclosed, including a latch that receives power from a motor associated with a latch. A sensor can be provided for monitoring the current consumption of the motor. A microcontroller can control the latch and/or the motor, based on the current consumption data received from the sensor concerning the current consumption of the motor. Monitoring of the current waveform of the motor therefore provides speed and direction feedback data for control of the latch. Additionally, a microprocessor can process instructions for controlling the interaction of the motor, the latch, the sensor and/or the microcontroller. Such a current monitoring control system is made possible by variation in current consumption of the motor during rotation as a result of commutation, which can be interrogated by measuring the voltage drop across the motor or a shunt resistor, or through the use of other current sensors, such as, for example, a Hall-effect type current sensor.