Patent US3881212A successfully refreshed from Google Patents.
US3881212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiper blade
Assignee: Safety Vehicles Development AB
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Filing: 1973-08-17
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Granted: 1975-05-06
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Expires: 1993-08-17
Abstract
Abstract A wiper blade having an internal cleaning liquid conduit from which on each side of the contact member channels open into a downwardly widening slot that can be closed. As the blade moves, liquid supply from the channels on the rear side of the blade is prevented by the contact member which is provided with sealing surfaces cooperating with corresponding sealing surfaces on the blade body. The wiper blade has an attachment member that allows the blade to be used together with various types of blade holders.
Inventors
- 👤 Ake Ingemar Regler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:20
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/52; B60S1/522; B60S1/524; B60S1/04; B60S1/32; B60S1/38; B60S2001/3812; B60S2001/3817; B60S2001/3818; B60S2001/3827; B60S2001/3829; B60S2001/3836
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
232 words
In a wiper blade of elastic material for cleaning of, for example, windshields in vehicles, comprising a body which, via a connecting portion carries a contact member intended for contact with the object to be cleaned and which is mountable by means of an anchor member in a holder which moves back and forth across the object to be cleaned, there being in the body a longitudinal conduit from which cleaning liquid can flow out on both sides of the contact member via channels, the contact member being constructed with sealing surfaces which, when the contact member is bent out from a middle position to a position to one side of the medial plane sealingly abut corresponding sealing surfaces of the body, thereby allowing the liquid to flow out on only the front side of the wiper blade relative to the direction of motion at that time; the improvement in which the channels opening on the same side of the contact member open into a groove which widens in a direction away from the medial plane, and the sides of which form the Sealing surfaces, the sealing surfaces of the body and the contact member as well as the contact surface lying on the same side of a plane which is perpendicular to the medial plane and which intersects the region where the connecting portion of the contact member joins the body.
Claim 2
Dependent Claim
232 words
In a wiper blade of elastic material for cleaning of, for example, windshields in vehicles, comprising a body which, via a connecting portion carries a contact member intended for contact with the object to be cleaned and which is mountable by means of an anchor member in a holder which moves back and forth across the object to be cleaned, there being in the body a longitudinal conduit from which cleaning liquid can flow out on both sides of the contact member via channels, the contact member being constructed with sealing surfaces which, when the contact member is bent out from a middle position to a position to one side of the medial plane sealingly abut corresponding sealing surfaces of the body, thereby allowing the liquid to flow out on only the front side of the wiper blade relative to the direction of motion at that time; the improvement in which the channels opening on the same side of the contact member open into a groove which widens in a direction away from the medial plane, and the sides of which form the Sealing surfaces, the sealing surfaces of the body and the contact member as well as the contact surface lying on the same side of a plane which is perpendicular to the medial plane and which intersects the region where the connecting portion of the contact member joins the body.
Claim 3
Dependent Claim
32 words
Wiper blade according to claim 1, characterized in that the angle between the plane of at least one of the sealing surfaces and the medial plane through the contact member is acute.
Claim 4
Dependent Claim
34 words
Wiper blade according to claim 2, characterized in that the planes of two sealing surfaces on the same side of the medial plane are disposed to intersect each other substantially in the medial plane.
Claim 5
Dependent Claim
57 words
Wiper blade according to claim 1, characterized in that the connecting portion of the contact member has two substantially parallel sides, each of which connects at one end with the adjacent sealing surface of the contact member and forms one side of a wedge-shaped pocket whose other side connects with the adjacent sealing surface of the body.
Claim 6
Dependent Claim
104 words
Wiper blade according to claim 1, characterized in that the connecting portion of the contact member has a first sealing surface which forms one side of a wedge-shaped pocket, the other side of which is formed of a corresponding first sealing surface on the body, and that both of said sealing surfaces each border on a second sealing surface which forms an obtuse angle with the bordering first sealing surface so that both the corresponding first sealing surfaces and both the corresponding second sealing surfaces substantially seal against one another when the contact member is bent to one side and closes said wedge-shaped pocket.
Claim 7
Dependent Claim
36 words
Wiper blade according to claim 1, characterized in that at least a portion of each channel from the conduit to the space between two cooperating sealing surfaces lies in the connecting portion of the contact member.
Claim 8
Dependent Claim
119 words
Wiper blade having a body and an anchor means for mounting the wiper blade in a holder which moves back and forth across the object to be cleaned, characterized in that in the anchor member there is a rib which is attached to the body and which projects from the same, which rib has at its end remote from the body an attachment head, and that on both sides of the rib supports project in such a way that between the body and each support there is formed a lower groove, and between the support and the attachment head there is formed an upper groove, which grooves are designed to enclose blade-like elements in a holder for wiper blades.
Claim 9
Dependent Claim
119 words
Wiper blade having a body and an anchor means for mounting the wiper blade in a holder which moves back and forth across the object to be cleaned, characterized in that in the anchor member there is a rib which is attached to the body and which projects from the same, which rib has at its end remote from the body an attachment head, and that on both sides of the rib supports project in such a way that between the body and each support there is formed a lower groove, and between the support and the attachment head there is formed an upper groove, which grooves are designed to enclose blade-like elements in a holder for wiper blades.
Claim 10
Dependent Claim
52 words
Wiper blade according to claim 7, characterized in that the supports are disposed so that, when the upper grooves enclose elements from a holder, the supports are deflected from their free rest positions and lie in contact with the body with at least a portion of the side which faces the body.
Claim 11
Dependent Claim
18 words
Wiper blade according to claim 1, characterized by a symmetric shape on opposite sides of said medial plane.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |