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US 7,739,771 B2Granted
Windshield wiper drive assembly with dual sector gear drive
AssigneeAlbany Magneto Equipment, Inc.
InventorEdward S. Powell, Jr.
Life of this patent
Estimating the term…
Abstract
A wiper drive system including a wiper drive mechanism driving a pair of wiper drive arms to sweep a wiper blade across a surface. The wiper drive mechanism has a motor driving a rack engaged with a sector gear that is supported by pivot bearings. Each wiper drive arm is driven by a sector gear.
Claims15
A wiper drive mechanism comprising:
- (a) a set of pivot bearings respectively defining a pair of pivot axes;
- (b) a pair of sector gears, each supported for rotation about a respective one of said pair of pivot axes;
- (c) a single rack drivingly engaged with both of said sector gears and arranged to be driven reciprocatingly by a motor;
- (d) a pair of wiper drive rocker shafts, a respective one of said pair of wiper drive rocker shafts being associated with and driven by each of said sector gears and supported in a respective one of said pivot bearings;
- (e) a pair of wiper drive arms, each of said wiper drive arms being attached to a respective one of said pair of rocker shafts;
- and
- (f) a bridge adapted to carry a wiper blade, said bridge interconnecting said wiper drive arms and being attached to each of said wiper drive arms through a respective bridge pivot.
4 more elements
A wiper drive system, comprising:
- (a) a first drive mechanism, comprising:
- i. a first set of pivot bearings respectively defining a first pair of pivot axes;
- ii. a first pair of sector gears each supported for rotation about a respective one of said first pair of pivot axes, and a first rack drivingly engaged with both of said sector gears of said first pair and arranged to be driven reciprocatingly by a motor;
- and
- iii. a respective wiper drive rocker shaft associated with and driven by each of said sector gears of said first pair and supported in a respective one of said pivot bearings of said first set;
- (b) a second drive mechanism, comprising:
- i. a second set of pivot bearings respectively defining a second pair of pivot axes;
- ii. a second pair of sector gears each supported for rotation about a respective one of said second pair of pivot axes, and a second rack drivingly engaged with both of said sector gears of said second pair;
- and
- iii. a respective wiper drive rocker shaft associated with and driven by each of said sector gears of said second pair and supported in said pivot bearings of said second set;
- and
- (c) a connecting member interconnecting said first drive mechanism with said second drive mechanism and driving said second drive mechanism in response to movement of a part of said first drive mechanism.
9 more elements
Dependencies are inferred from the claim text.