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US 4,347,642 AGranted
Wiper arm
AssigneeITT Industries, Inc.
InventorsKurt Bauer, Christian Roth
Life of this patent
Estimating the term…
Abstract
A windshield wiper arm is described wherein a press fit connection is provided between the wiper rod and a link. The rod carries projections which bite into the softer material of the link.
Claims8
A wiper assembly comprising:
- a wiper rod having a substantially rectangular cross-section and formed of relatively hard material;
- a link formed of relatively soft material, said link having a substantially U-shaped cross section comprising a web and two side walls;
- a fastening member;
- and
- a spring element attached between said fastening member and said wiper rod to provide contact pressure;
- said wiper rod having engraved toothing on a first lateral surface and having sharp edged projections on one front surface adjacent said lateral surface, said projections and said toothing being adapted to dig on bite into said link whereby when said link and said wiper rod are assembled, said projections and said toothing are embedded into said link such that said link and said wiper rod are lockingly engaged.
3 more elements
A method for manufacturing a wiper arm comprising the steps of:
- engraving toothing into one or more lateral surfaces of a wiper rod having a substantially rectangular cross-section such that a sharp edged projection is provided which projects from a surface of the wiper rod adjacent said lateral surface;
- inserting said wiper rod into a link having a web and two sidewalls;
- bringing the upper portion of the sidewalls of the link into engagement with said wiper rod opposite such that said projections dig on bite into said web.
Dependencies are inferred from the claim text.