WINDSHIELD WIPER ASSEMBLY

• US 3,780,395 A
• Filed: 11/29/1972
• Issued: 12/25/1973
• Est. Priority Date: 11/19/1970
• Status: Expired due to Term

• Current Assignee: Lawrence L. Huver, William J. Quinlan
• Original Assignee: Lawrence L. Huver, William J. Quinlan
• Inventors: Quinlan, William J., Huver, Lawrence L.
• Primary Examiner(s): Feldman, Peter
• Application Number:
  US05/310,447
• Time in Patent Office: 391 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 1/3851 Mounting of connector to blade assembly
• CPC Class Codes: B60S 1/3877 embedded in the squeegee
• CPC Class Codes: B60S 1/40 Connections between blades and arms
• CPC Class Codes: B60S 1/4064 the channel-shaped end being provided with protrusions on, or holes in, the side walls to create a pivot
• CPC Class Codes: B60S 1/4067 for arms provided with a side pin
• CPC Class Codes: B60S 1/4087 the end being provided with protrusions or holes
• CPC Class Codes: B60S 2001/382 the backing strip being an essentially planar reinforcing strip, e.g. vertebra
• CPC Class Codes: B60S 2001/3836 characterised by cross-sectional shape

Abstract

An elongated and longitudinally curved blade body of resiliently flexible material has a hollow crown portion integral with a lower wiping portion. A set of superposed metallic leaf springs are contained within the hollow crown portion for proper application and control of forces on the wiping portion of the blade body. Various types of wiper arm connectors may be secured to the blade body by fasteners which engage the leaf springs in the crown portion.

Claims

1. An elongated windshield wiper blade formed integrally from resiliently flexible material, said blade having a performed hollow crown portion and a lower wiping portion integral with the base of said crown portion, siad crown portion being defined in cross section by a concavo-convex base wall, a concavo-convex top wall parallel to said base wall and upwardly divergent and elongated side walls connecting said base wall and said top wall, said base wall, top wall and side walls defining a cavity extending longitudinally through said crown portion.

2. The windshield wiper blade set forth in claim 1 wherein said lower wiping portion is tapered from its juncture with said crown downwardly to a narrow wiping edge.

3. The windshield wiper blade set forth in claim 1 wherein said wiping portion includes a narrow elongated wiper lip portion, an intermediate wiper portion integral with said lip portion and a narrow neck portion connecting said intermediate wiper portion to the base of said crown portion along the longitudinal center line of said crown base, said intermediate portion being triangular in cross section and defined by opposite side surfaces diverging from said narrow lip portion in the direction of said crown portion, and a top surface connecting said side surfaces.