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. 13, 2000
Filed:
Sep. 11, 1998
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A shift control unit is provided in an electric-power-assist transmission which offers good operatability. A shift disabling unit employs a neutral-position detecting unit, a vehicle-speed judging unit, an engine-rotational-speed judging device, an OR circuit and an AND circuit. The neutral-position detecting unit is used for outputting an 'H'-level signal to indicate that a gear is placed at a neutral position. The vehicle-speed judging unit generates an 'H'-level signal for a speed of a vehicle equal to or higher than 10 km/h. On the other hand, the engine-rotational-speed judging device generates an 'H'-level signal for a rotational speed of an engine equal to or higher than 3,000 rpm. The OR circuit generates an 'H'-level signal when the vehicle-speed judging unit generates an 'H'-level signal or the engine-rotational speed judging device generates an 'H'-level signal. On the other hand, the AND circuit generates an 'H'-level signal when the neutral-position detecting unit generates an 'H'-level signal and the OR circuit also generates an 'H'-level signal. With the AND circuit outputting the 'H'-level signal, the shift disabling unit prevents a shift change from being made.