Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Reexamination Certificate
1998-06-16
2001-05-15
Jones, Deborah (Department: 1775)
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
C015S245000
Reexamination Certificate
active
06230358
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATION
This application relates to and incorporates herein by reference Japanese Patent Application No. 9-177757 filed on Jun. 18, 1997.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a wiper blade rubber for a windshield wiper which turns back and forth on the windshield of a vehicle.
2. Related Art
A conventional windshield wiper for wiping the windshield of a vehicle has a wiper blade rubber. The wiper blade rubber is inclined against the windshield while wiping the windshield so that the windshield is wiped effectively. The wiper blade rubber has a neck portion having a narrowed shape, and a wiping portion connecting to the neck portion. When the wiper blade rubber wipes the windshield, the neck portion is bent so that the wiping portion is inclined, leading to an effective wiping.
Further, the conventional windshield wiper turns back and forth. Therefore, when the windshield wiper turns over, an inclining direction of the wiping portion against the windshield is also reversed while changing the height of the wiper blade rubber from the windshield. Specifically, the inclining direction of the wiping portion is reversed with a top end of the wiping portion as a center. The top end of the wiping portion contacts the windshield surface to be wiped. Therefore, the height of the wiper blade rubber is maximum when the wiping portion stands upright during changing of the inclining direction, and is minimum when the wiping portion is inclined to a maximum degree. However, when the height of the wiper blade rubber changes, a harsh noise may sounds.
To decrease the noise, JP-A-2-162142 proposes to form an arc portion in a wiper blade rubber so that the inclining direction of a moving portion (i.e., wiping portion) is turned over smoothly using the arc portion. However, in the wiper blade rubber according to JP-A-2-162142, the moving portion and a fixed portion of the wiper blade rubber may slide in a lateral direction, resulting in that the moving portion fails to be inclined.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a wiper blade rubber which suppresses changes in the height of the wiper blade rubber when the inclining direction of the wiper blade rubber is reversed, while keeping a wiping portion of the wiper blade rubber being inclined appropriately.
According to the present invention, a wiper blade rubber has a holding portion being held by a supporting member, a wiping portion for wiping the windshield of a vehicle and a connecting portion for connecting the holding portion and the wiping portion. The connecting portion has a neck portion having a narrowed cross-section, and has an inside hollow. The hollow extends vertically in the neck portion and horizontally above the neck portion, with respect to the windshield, thus having a T-shaped cross-section. Therefore, the connecting portion is readily bent due to the neck portion so that the wiping portion is inclined. Further, the connecting portion is readily deformed vertically with respect to the windshield due to the hollow. Therefore, the wiper blade rubber can suppress changes in the height of the wiper blade rubber when turning over the inclining direction of the wiper blade rubber, reducing a harsh noise generated due to friction between the wiper blade rubber and the windshield.
Preferably, the wiping portion has a shoulder portion for limiting the inclining angle of the wiping portion. When the wiping portion is inclined during wiping, the shoulder portion touches the connecting portion so that the wiping portion is inclined at an appropriate angle.
REFERENCES:
patent: 3566432 (1971-03-01), Quinlan et al.
patent: 3636583 (1972-01-01), Rosen
patent: 3785002 (1974-01-01), Quinlan et al.
patent: 4473919 (1984-10-01), Fritz, Jr.
patent: 2085288A (1982-04-01), None
patent: 2-162142 (1990-06-01), None
patent: 2-130858 (1990-10-01), None
Asmo Co. Ltd.
Fish & Richardson P.C.
Jones Deborah
McNeil Jennifer
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