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:
May. 28, 1991
Filed:
Feb. 23, 1989
Adam E Rolinski, Grand Haven, MI (US);
Greg R Pattok, Spring Lake, MI (US);
Sparton Corporation, Jackson, MI (US);
Abstract
A service brake and shift lever interlock system for a vehicle is operably controlled by a logic control circuit to prevent movement of the shift lever from the 'Park' position when the ignition switch is in the 'Start' or 'Run' position and the service brake pedal is in a brake release position (i.e., the vehicle brakes are not applied). The interlock system does not prevent movement of the shift lever from the 'Park' position under other conditions when the ignition switch is in the 'Start' or 'Run' position. An ignition interlock system prevents movement of the shift lever from the 'Park' position when the ignition switch is in the 'Lock' position.