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. 20, 1999
Filed:
Jul. 15, 1996
Takashi Hoshino, Isesaki, JP;
Mitsuba Corporation, Kiryu, JP;
Abstract
An opposed wiping type wiper unit for use with one of right-hand and left-hand specifications has a crank arm that rotates when driven by a motor, an intermediate link connected to right-hand and left-hand wiper shafts through driving rods, and a connecting rod that connects the crank arm and the intermediate link. The length of the connecting rod and the connecting position thereof to the intermediate link are set so that the actual angular acceleration change of the intermediate link is substantially symmetrical. The angular velocity changes of right-hand and left-hand wiper arms are made asymmetrical on the basis of the length of the driving rods and the connecting positions thereof to the intermediate link. Only the lengths of the driving rods and their connecting positions to the intermediate link need to be varied. Thus, the opposed wiping type wiper unit can easily be designed in accordance with both right-hand and left-hand specifications, and permits the use of as many parts common to the specifications as possible, thereby decreasing the cost.