Aerodynamic windshield wiper superstructure
First Claim
1. A windshield wiper assembly comprising a superstructure and a squeegee positioned below and connected to the superstructure in an operative orientation for wiping a windshield, the superstructure being adapted for connection to a wiper arm driven to reciprocate the superstructure over a windshield with and against a natural prevailing air flow over said windshield, and including a longitudinally extending primary yoke, the primary yoke comprising:
- a synthetic plastic molding having transversely spaced leeward and windward sides relative to said air flow, said sides having a predetermined separation between opposed inner surfaces thereof which increases from a minimum at an operative bottom side of the yoke to a maximum at an operative top side of the yoke remote from the windshield;
a gap defined between said inner surfaces extending through said primary yoke between the bottom and top sides thereof through which air may pass;
said leeward and windward sides having a smoothly rounded profile at the top and bottom, thereby minimizing any turbulence which may be created when said air flow impinges on the primary yoke; and
the leeward side extending upwardly above the windshield by a distance defining the effective height of the leeward side, the windward side similarly extending upwardly above the windshield by a distance defining the effective height of the windward side, said effective height of the leeward side exceeding the effective height of the windward side for at least a portion of the length of the yoke so that the leeward side is exposed to air flowing across the yoke over the windward side on said portion, and the assembly is pushed against the windshield.
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Accused Products
Abstract
A windshield wiper superstructure of which the primary yoke has transversely spaced leeward and windward sides extending along the length thereof and transversely extending alignment means adapted to maintain a predetermined distance between said sides, the inner surface of the leeward side adjacent the windward side being inclined toward the windward side to define a ramp for directing air flow through the primary yoke.
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Citations
3 Claims
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1. A windshield wiper assembly comprising a superstructure and a squeegee positioned below and connected to the superstructure in an operative orientation for wiping a windshield, the superstructure being adapted for connection to a wiper arm driven to reciprocate the superstructure over a windshield with and against a natural prevailing air flow over said windshield, and including a longitudinally extending primary yoke, the primary yoke comprising:
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a synthetic plastic molding having transversely spaced leeward and windward sides relative to said air flow, said sides having a predetermined separation between opposed inner surfaces thereof which increases from a minimum at an operative bottom side of the yoke to a maximum at an operative top side of the yoke remote from the windshield; a gap defined between said inner surfaces extending through said primary yoke between the bottom and top sides thereof through which air may pass; said leeward and windward sides having a smoothly rounded profile at the top and bottom, thereby minimizing any turbulence which may be created when said air flow impinges on the primary yoke; and the leeward side extending upwardly above the windshield by a distance defining the effective height of the leeward side, the windward side similarly extending upwardly above the windshield by a distance defining the effective height of the windward side, said effective height of the leeward side exceeding the effective height of the windward side for at least a portion of the length of the yoke so that the leeward side is exposed to air flowing across the yoke over the windward side on said portion, and the assembly is pushed against the windshield. - View Dependent Claims (2, 3)
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Specification