Windshield wiper blade assembly

• US 3,995,347 A
• Filed: 07/08/1975
• Issued: 12/07/1976
• Est. Priority Date: 07/26/1974
• Status: Expired due to Term

• Current Assignee: Swf-Spezialfabrik Fur Autozubehor Gustav RAU GmbH
• Original Assignee: Swf-Spezialfabrik Fur Autozubehor Gustav RAU GmbH
• Inventors: Kohler, Alfred
• Primary Examiner(s): Feldman, Peter
• Application Number:
  US05/594,062
• Time in Patent Office: 518 Days
• Field of Search: 15/250.36-250.42
• US Class Current: 15/250.43
• CPC Class Codes: B60S 1/38 Wiper blades provided with liquid spreading means B60S1/524; provided with gas spreading means B60S1/546
• CPC Class Codes: B60S 1/3872 without connector, e.g. connection to wiper arm via squeegee or vertebra
• CPC Class Codes: B60S 1/3881 in additional element, e.g. spoiler
• CPC Class Codes: B60S 2001/3817 chacterised by a backing strip to aid mounting of squeegee in support
• CPC Class Codes: B60S 2001/3836 characterised by cross-sectional shape

Abstract

A windshield wiper blade assembly comprises a blade yoke made of an elastic plastic material which has a surface on one side facing the windshield which is spaced apart from a wiper blade holding portion. A wiper blade of the usual rubber material includes a base portion which is positioned between the holding portion and the surface of the yoke and it also includes a wiper blade portion which extends in a direction outwardly from the base portion toward the windshield and through a blade passage defined in the holding portion. A flat spring member made of metal is disposed between the base portion of the blade and the yoke surface.

Claims

1. A wiper blade assembly for vehicle windshields, comprising a blade yoke made of an elastic plastic material and having a surface on one side facing toward the windshield, blade support means carried by said yoke including a holding portion spaced from said yoke surface and having blade passage means therethrough, a wiper blade having a base portion disposed between said surface and said holding portion and having a wiper blade portion connected to said base portion and extending through said blade passage towards the windshield, said yoke having at least one substantially vertical end wall closing one end of the space between said holding portion and said yoke surface with an inturned flange at its lower end having an opening therethrough and defining an interior shoulder extending inwardly from said end wall, a flat metal spring member insertable through the opening in said end wall and disposed after insertion of said spring member and said blade between said base portion and said yoke surface, the adjacent end of the base portion of said blade being aligned with and closing the opening, and with said spring member overlying said shoulder for preventing said spring member from moving out of said yoke.

2. A wiper blade assembly for vehicle windshields, according to claim 1, wherein the opening in said flange portion is bounded by a wall having a lower surface aligned with the surface of said holding portion.

3. A wiper blade assembly for vehicle windshields, according to claim 1, wherein said holding portion comprises a plurality of hook members extending outwardly from said yoke in a direction toward the windshield and having inturned end portions forming surfaces thereon spaced from said yoke surface, and being located on each side of said yoke and spaced apart centrally to permit passage of said wiper blade portion therethrough.

4. A wiper blade assembly for vehicle windshields, according to claim 3, wherein said wiper blade portion includes a narrow web extending between said hook portions on respective opposite sides of said yoke and a widened flange portion on the exterior of said hook portions tapering toward the windshield.

5. A wiper blade assembly for vehicle windshields according to claim 1, wherein said yoke and said support means are made of a single molded plastic part, the opening of the end wall slot being at least as large as the cross-section of said spring plate.