Patent US3718940A successfully refreshed from Google Patents.
US3718940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated wiper blade
Assignee: Individual
•
Filing: 1971-06-24
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Granted: 1973-03-06
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Expires: 1991-06-24
Abstract
Abstract A blade for window wipers and the like wherein an electrical resistance element extends therethrough for heating the wiping lip; said electrical resistance element being characterized by a thin membrane comprised of flat plate sections joined by flexible coupling sections and thereby adapted to be independently bendable within the wiper blade body and all without distortion of said body which remains universally bendable to conform to the changing compound curvatures over which it is to wipe; and said membrane having maximum heat transfer and reinforcing features as related to the wiper blade body for a most direct and effective heat transfer to the working surface that is to be defrosted and wiped clean.
Inventors
- 👤 G Bode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:59
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/38; B60S1/3803; B60S1/3805; B60S2001/3827; B60S2001/3836
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A heatable wiper blade construction including: a universally flexible body of solid and bendable material having at least one wiping portion for traversing a surface to be wiped; and a universally flexible electrical heating element extending coextensively within the first mentioned body and comprised of a ribbon of flat and bendable internal resistance material Separated into a series of interconnected plate sections integrally joined together and separated by flexible coupling sections; whereby the composite structure of said body and heating element is universally flexible.
Claim 2
Dependent Claim
84 words
A heatable wiper blade construction including: a universally flexible body of solid and bendable material having at least one wiping portion for traversing a surface to be wiped; and a universally flexible electrical heating element extending coextensively within the first mentioned body and comprised of a ribbon of flat and bendable internal resistance material Separated into a series of interconnected plate sections integrally joined together and separated by flexible coupling sections; whereby the composite structure of said body and heating element is universally flexible.
Claim 3
Dependent Claim
84 words
A heatable wiper blade construction including: a universally flexible body of solid and bendable material having at least one wiping portion for traversing a surface to be wiped; and a universally flexible electrical heating element extending coextensively within the first mentioned body and comprised of a ribbon of flat and bendable internal resistance material Separated into a series of interconnected plate sections integrally joined together and separated by flexible coupling sections; whereby the composite structure of said body and heating element is universally flexible.
Claim 4
Dependent Claim
84 words
A heatable wiper blade construction including: a universally flexible body of solid and bendable material having at least one wiping portion for traversing a surface to be wiped; and a universally flexible electrical heating element extending coextensively within the first mentioned body and comprised of a ribbon of flat and bendable internal resistance material Separated into a series of interconnected plate sections integrally joined together and separated by flexible coupling sections; whereby the composite structure of said body and heating element is universally flexible.
Claim 5
Dependent Claim
40 words
The heatable wiper blade as set forth in claim 1 wherein the series of plate sections are coplanar and extend laterally from the said coupling sections and project into the said at least one wiping portion to heat the same.
Claim 6
Dependent Claim
53 words
The heatable wiper blade as set forth in claim 1 wherein the series of plate sections are coplanar with laterally extended portions thereof separated by notches entering a margin of the ribbon comprising said heating element and said extended portions projected into the said at least one wiping portion to heat the same.
Claim 7
Dependent Claim
28 words
The heatable wiper blade as set forth in claim 1 wherein the coupling sections joining the plate sections are corrugations displaced out of the plane of the ribbon.
Claim 8
Dependent Claim
38 words
The heatable wiper blade as set forth in claim 1 wherein the series of coupling sections joining the series of plate sections are corrugations displaced alternately out of the plane of and at opposite sides of the ribbon.
Claim 9
Dependent Claim
28 words
The heatable wiper blade as set forth in claim 1 wherein the coupling sections are corrugations disposed normal to and displaced out of the plane of the ribbon.
Claim 10
Dependent Claim
42 words
The heatable wiper blade as set forth in claim 1 wherein the series of coupling sections joining the series of plate sections are corrugations disposed normal to and displaced alternately out of the plane of and at opposite sides of the ribbon.
Claim 11
Dependent Claim
63 words
The heatable wiper blade as set forth in claim 1, wherein the coupling sections joining the plate sections are corrugations disposed normal to and extending partially across the plane of the ribbon thereby reducing the cross section thereof, and wherein the cross section of each plate section is correspondingly reduced by a perforation therethrough, whereby a uniform heating per unit length is maintained.
References Cited (Backward Citations)
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 |