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US 5,008,971 AGranted
Windshield wiper arm
AssigneeUnited Technologies Electro Systems, Inc.
InventorKenneth W. Stewart, Sr.
Life of this patent
Estimating the term…
Abstract
The tension of a windshield wiper is adjusted by turning a nut which adjusts the rotational tension of a spring on the arm. The positioning of the nut is fixed by a second nut, a spring also forces the arm into a detent, holding the arm away from the windshield.
Claims5
A windshield wiper arm for attachment to a wiper arm drive shaft that rotates the arm on a windshield, characterized by:
- a wiper arm carrier adapted to fit on the wiper arm drive shaft;
- a rod which is rotatably mounted on the carrier and rotatable on the carrier between a first position for causing the wiper to strike the windshield and a second position a fixed distance from the windshield;
- resilient means for rotatably holding the rod in tension on the windshield;
- detent means on the carrier;
- detent engagement means on the rod for engaging the detent means to hold the rod in the second position away from the windshield;
- tensioning means engaging the carrier, the rod and the resilient means for adjusting the tension of the rod on the windshield, and
- the resilient means forcing the detent engagement means into the detent.
4 more elements
Dependencies are inferred from the claim text.