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:
Apr. 13, 2021
Filed:
May. 11, 2020
Stoneridge Control Devices, Inc., Novi, MI (US);
Susan M. Barnabo, Walpole, MA (US);
John Sachs, Farmington Hills, MI (US);
Stoneridge Control Devices, Inc., Novi, MI (US);
Abstract
A gearbox operating system shifts between 2-wheel and 4-wheel drive. The system includes a reversible motor, and a reduction gear train that is configured to be driven by the motor to move a plunger between extended and retracted plunger positions that shifts gears. A printed circuit board has at least two Hall effect sensing circuits. A magnet is carried by the reduction gear train and is rotationally movable relative to the Hall effect sensing circuits. A first Hall effect sensing circuits provides a first output signal indicative of the extended plunger position. A second Hall effect sensing circuits provides a second output signal that is indicative of the retracted plunger position. A controller monitors the two Hall effect sensing circuits to determine if a desired plunger position has been achieved and trigger an error code if the desired plunger position has not been achieved within a predetermined response time.