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:
Jun. 01, 2021
Filed:
Feb. 11, 2019
Denso International America, Inc., Southfield, MI (US);
Christopher Wisniewski, Ann Arbor, MI (US);
Jason Wagnitz, Farmington Hills, MI (US);
DENSO International America, Inc., Southfield, MI (US);
Abstract
The present disclosure includes a heating, ventilation, and air conditioning (HVAC) door diagnostic system. The system has a rotatable hard stop lever that contacts, and restricts movement of, both a first airflow control door and a second airflow control door beyond a stop position when both the first airflow control door and the second airflow control door are present and moving in sync. When one of the first and second airflow control doors is not present or the first and second airflow control doors are not in sync, only one of the first and second airflow control doors will: contact the hard stop lever at the stop position, rotate the hard stop lever, and move beyond the stop position. The HVAC door diagnostic system generates a failure notice when the first airflow control door or the second airflow control door moves beyond the stop position.