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:
Oct. 15, 1991
Filed:
Sep. 07, 1990
Ryoichi Fukumoto, Nagoya, JP;
Tokihiko Yamamoto, Kariya, JP;
Gosaku Terabayashi, Okazaki, JP;
Eiichi Hamada, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
A vehicle windshield wiper structure has a wiper arm connected to a wiper head and supports a wiper blade which is adapted to be forced onto the surface of the windshield glass. A spring is provided to force the wiper blade into engagement with the windshield glass surface. The spring is engaged at one end with an intermediate portion of the wiper arm and at the other end with an end of a swingable lever which is pivotably mounted on the wiper head. The other end of the swingable lever is provided with a cam follower roller which is adapted to be engaged under a resilient force applied by the spring with a cam provided on a stationary part of the vehicle. The cam has a profile which is slanted at the opposite end portions so that the resilient force depressing the wiper blade into engagement with the windshield glass surface is decreased at each end of the stroke of movement of the wiper to thereby decrease the noise which may otherwise be produced when the wiper movement is inverted.