US3718941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield wiper for circular headlamps
Assignee: SWF Auto Electric GmbH
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Filing: 1971-10-08
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Granted: 1973-03-06
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Expires: 1991-10-08
Abstract
Abstract A windshield wiper for a circular headlamp, includes a first long wiper arm with a yoke pivotally connected to its outer end which is engageable with the wiper blade, and a second wiper arm carrying two longitudinally spaced yokes which are pivotally connected to the associated shorter arm and engage the wiper blade at longitudinally spaced inward locations. The wiper arms are oscillatable about a common pivot through separate oscillation angles with the shorter arm being operated through a longer oscillation angle range backwardly and forwardly than the longer arm so as to cause the blade moved thereby to curve around the circular frame of a circular headlight when it moves from side to side.
Inventors
- 👤 H Deutscher
- 👤 K Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:32
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/34; B60S1/3402; B60S1/3406; B60S1/38; B60S1/3801; B60S1/56; B60S1/60; B60S2001/3812; B60S2001/3813; B60S2001/3815
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
243 words
A windshield wiper assembly for a highly curved glass, such as a cylindrical car headlamp, comprising a wiper blade of a length substantially equal to the maximum dimension of the glass to be wiped, at least one first long wiper arm having a mounting end and an opposite outer end, at least one second short arm shorter than said first arm and having a mounting end and an opposite outer end, double bearing means connected to said first and second arms and defining a common axis of oscillation for oscillating said arms through different oscillating angle ranges, a first stirrup engaged adjacent each end with said wiper blade and connected intermediate its ends to said first arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, and a plurality of second stirrups with respective ends connected to said wiper blade at longitudinally spaced locations inwardly from said first stirrup and at longitudinally spaced locations in respect to each other and each connected intermediate its ends to said short arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, said wiper blade being flexible and being bendable about the area of the glass to be wiped, said shorter arm being movable through a longer angular rang of oscillation than said longer arm.
Claim 2
Dependent Claim
243 words
A windshield wiper assembly for a highly curved glass, such as a cylindrical car headlamp, comprising a wiper blade of a length substantially equal to the maximum dimension of the glass to be wiped, at least one first long wiper arm having a mounting end and an opposite outer end, at least one second short arm shorter than said first arm and having a mounting end and an opposite outer end, double bearing means connected to said first and second arms and defining a common axis of oscillation for oscillating said arms through different oscillating angle ranges, a first stirrup engaged adjacent each end with said wiper blade and connected intermediate its ends to said first arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, and a plurality of second stirrups with respective ends connected to said wiper blade at longitudinally spaced locations inwardly from said first stirrup and at longitudinally spaced locations in respect to each other and each connected intermediate its ends to said short arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, said wiper blade being flexible and being bendable about the area of the glass to be wiped, said shorter arm being movable through a longer angular rang of oscillation than said longer arm.
Claim 3
Dependent Claim
243 words
A windshield wiper assembly for a highly curved glass, such as a cylindrical car headlamp, comprising a wiper blade of a length substantially equal to the maximum dimension of the glass to be wiped, at least one first long wiper arm having a mounting end and an opposite outer end, at least one second short arm shorter than said first arm and having a mounting end and an opposite outer end, double bearing means connected to said first and second arms and defining a common axis of oscillation for oscillating said arms through different oscillating angle ranges, a first stirrup engaged adjacent each end with said wiper blade and connected intermediate its ends to said first arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, and a plurality of second stirrups with respective ends connected to said wiper blade at longitudinally spaced locations inwardly from said first stirrup and at longitudinally spaced locations in respect to each other and each connected intermediate its ends to said short arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, said wiper blade being flexible and being bendable about the area of the glass to be wiped, said shorter arm being movable through a longer angular rang of oscillation than said longer arm.
Claim 4
Dependent Claim
243 words
A windshield wiper assembly for a highly curved glass, such as a cylindrical car headlamp, comprising a wiper blade of a length substantially equal to the maximum dimension of the glass to be wiped, at least one first long wiper arm having a mounting end and an opposite outer end, at least one second short arm shorter than said first arm and having a mounting end and an opposite outer end, double bearing means connected to said first and second arms and defining a common axis of oscillation for oscillating said arms through different oscillating angle ranges, a first stirrup engaged adjacent each end with said wiper blade and connected intermediate its ends to said first arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, and a plurality of second stirrups with respective ends connected to said wiper blade at longitudinally spaced locations inwardly from said first stirrup and at longitudinally spaced locations in respect to each other and each connected intermediate its ends to said short arm adjacent the outer end thereof and being rotatable at the connection about an axis substantially perpendicular to the plane of the area to be wiped, said wiper blade being flexible and being bendable about the area of the glass to be wiped, said shorter arm being movable through a longer angular rang of oscillation than said longer arm.
Claim 5
Dependent Claim
32 words
A windshield wiper assembly, according to claim 1, wherein said longer wiper arm extends outwardly from the plane of the glass to be wiped and is located above said shorter wiper arm.
Claim 6
Dependent Claim
37 words
A windshield wiper assembly, according to claim 1, including bearing means carried on said long arm and said short arm for each of said first and second stirrups and rotatably mounting such stirrups on the associated arms.
Claim 7
Dependent Claim
25 words
A windshield wiper assembly, according to claim 1, wherein only one of said second stirrups is secured on the associated second arm against axial displacement.
Claim 8
Dependent Claim
31 words
A windshield wiper assembly, according to claim 1, wherein said wiper blade includes spring means thereon permitting transverse flexible movement of said blade, said spring means comprising a wave-shaped flat wire.
Claim 9
Dependent Claim
47 words
A windshield wiper assembly, according to claim 1, wherein said wiper blade includes a slot extending from one side to the other and longitudinally thereon, said blade having an undulated spring and carried in said groove with waves extending transversely to the longitudinal axis of said blade.
Claim 10
Dependent Claim
34 words
A windshield wiper assembly, according to claim 6, wherein said first and second stirrups have engagement claws at the respective ends thereof which engage into longitudinally extending recesses on each side of said blade.
Claim 11
Dependent Claim
38 words
A windshield wiper assembly, according to claim 7, wherein the inner one of said second stirrups has an inner engagement claw which is engaged with said wiper blade in the manner to hold it at a fixed location.
Claim 12
Dependent Claim
62 words
A windshield wiper assembly, according to claim 7, including a wave-shaped spring mounted to extend along the longitudinal length of said wiper blade with the waves extending transversely to the longitudinal axis thereof, said blade having a spring slot, each of said first and second stirrups including claws engaging around the top of said blade and into a longitudinally extending spring slot.
Claim 13
Dependent Claim
65 words
A windshield wiper assembly, according to claim 1, wherein said wiper blade is made of a resilient material and includes a claw-slot extending transversely therethrough intermediate its height which extends longitudinally in the area of said first and second stirrups, said first and second stirrups including engagement claws at each end having parts extending inwardly from each side of said blade into the associated claw-slot.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |