US3887956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield wiper fluid dispenser
Assignee: Lescoa Inc
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Filing: 1973-10-18
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Granted: 1975-06-10
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Expires: 1993-10-18
Abstract
Abstract The windshield wiper arm is connected to a die-cast head which is removably anchored to the crank shaft, the latter being driven by a crank arm for oscillatory movement of the wiper arm and attached wiper blade. At least a portion of the wiper arm is Ushaped opening downwardly and windshield cleaning fluid is dispensed directly onto the windshield beneath the blade through a nozzle mounted near the outer end of the arm portion. Fluid is directed from a source to the nozzle through a conduit formed by a series of passageways including an axial passageway through the crank shaft, a second passageway formed through the die cast head, a third passageway in the form of a tube extending from the die cast head to the nozzle completely shielded beneath the top of the wiper arm portion, and a fourth passageway in the form of a tube leading from the source of fluid to the inlet end of the shaft.
Inventors
- 👤 Harold Wind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:42
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/34; B60S1/3415; B60S1/46; B60S1/48; B60S1/52; B60S1/522
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
325 words
In a windshield wiper assembly having a bAse adapted to be anchored to the cowling of a vehicle; a drive shaft rotatably secured in said base for oscillatory rotation about its axis, said shaft having an upper portion adapted to extend above the base beyond the cowling; a head member removably anchored to the upper end of said shaft and rotatable therewith, said head member having a radial portion extending radially relative said axis, a wiper arm anchored at one end to said radial portion; a wiper blade pivotally connected near its center to the other end of said wiper arm; a source of windshield cleaning fluid; and conduit means for dispensing windshield cleaning fluid from said source on the associated windshield of the vehicle, the improvement comprising: said conduit means comprising a first passageway formed in said shaft lengthwise therethrough and having an inlet and an outlet; a second passageway formed in said head member and likewise having an inlet and an outlet, the outlet of said second passageway being at the end of said radial portion in a general radial direction relative to said axis, the inlet of said second passageway communicating with the outlet of said first passageway; a nozzle anchored to said arm for dispensing cleaning fluid directly onto the associated windshield in close proximity of said blade, said fluid being dispensed at all times directly beneath said blade regardless of the location of said blade on said associated windshield; a third passageway interconnecting the outlet of said second passageway with said nozzle; said third passageway being completely shielded beneath said wiper arm; a fourth passageway interconnecting said source of fluid with the inlet of said first passageway, said fourth passageway having an outlet communicating with said first passageway inlet and a fitting interconnecting said first and fourth passageways together, said fitting being anchored into proper position by a clip means which prevents rotation of said fitting jointly with said shaft.
Claim 2
Dependent Claim
325 words
In a windshield wiper assembly having a bAse adapted to be anchored to the cowling of a vehicle; a drive shaft rotatably secured in said base for oscillatory rotation about its axis, said shaft having an upper portion adapted to extend above the base beyond the cowling; a head member removably anchored to the upper end of said shaft and rotatable therewith, said head member having a radial portion extending radially relative said axis, a wiper arm anchored at one end to said radial portion; a wiper blade pivotally connected near its center to the other end of said wiper arm; a source of windshield cleaning fluid; and conduit means for dispensing windshield cleaning fluid from said source on the associated windshield of the vehicle, the improvement comprising: said conduit means comprising a first passageway formed in said shaft lengthwise therethrough and having an inlet and an outlet; a second passageway formed in said head member and likewise having an inlet and an outlet, the outlet of said second passageway being at the end of said radial portion in a general radial direction relative to said axis, the inlet of said second passageway communicating with the outlet of said first passageway; a nozzle anchored to said arm for dispensing cleaning fluid directly onto the associated windshield in close proximity of said blade, said fluid being dispensed at all times directly beneath said blade regardless of the location of said blade on said associated windshield; a third passageway interconnecting the outlet of said second passageway with said nozzle; said third passageway being completely shielded beneath said wiper arm; a fourth passageway interconnecting said source of fluid with the inlet of said first passageway, said fourth passageway having an outlet communicating with said first passageway inlet and a fitting interconnecting said first and fourth passageways together, said fitting being anchored into proper position by a clip means which prevents rotation of said fitting jointly with said shaft.
Claim 3
Dependent Claim
40 words
The improvement according to claim 1 wherein said fitting has an L-shaped passageway, one leg of which fits snugly within the inlet of said first passageway, the other leg of which fits snugly within the outlet of said fourth passageway.
Claim 4
Dependent Claim
22 words
The improvement according to claim 1 wherein said conduit means further includes a sealing means intermediate said first passageway inlet and fitting.
Claim 5
Dependent Claim
50 words
The improvement according to claim 1 wherein said clip means is secured to said base and fitting, said fitting including at least one groove formed along the outer surface and said clip means including a portion forming a tongue and groove fit therewith to anchor said fitting relative said shaft.
Claim 6
Dependent Claim
192 words
A windshield wiper assembly comprising, in combination: a base for anchoring to the cowling of a vehicle; and drive shaft rotatable in said base; a one-piece integrally formed head member removably anchored to said shaft and rotatable therewith, said head member having a shaft engaging portion and a portion extending radially relative said shaft; a wiper arm attached at one end to said radial portion of said head member; a wiper blade pivotally connected near its center to the other end of said wiper arm; a fluid dispersing nozzle anchored to the underside of said wiper arm near said other end; and condiut means for conveying cleaning fluid to said nozzle from a source comprising a first passageway formed centrally through said shaft, an enlarged central opening in said shaft engaging portion of said head member which communicates with said first passageway when said head member is positioned on said shaft, a second passageway formed centrally through said radial portion of said head member communicating directly with said enlarged opening, and a tubular hose means interconnected between said nozzle and said radial head portion anchored to the underside of said wiper arm.
Claim 7
Dependent Claim
192 words
A windshield wiper assembly comprising, in combination: a base for anchoring to the cowling of a vehicle; and drive shaft rotatable in said base; a one-piece integrally formed head member removably anchored to said shaft and rotatable therewith, said head member having a shaft engaging portion and a portion extending radially relative said shaft; a wiper arm attached at one end to said radial portion of said head member; a wiper blade pivotally connected near its center to the other end of said wiper arm; a fluid dispersing nozzle anchored to the underside of said wiper arm near said other end; and condiut means for conveying cleaning fluid to said nozzle from a source comprising a first passageway formed centrally through said shaft, an enlarged central opening in said shaft engaging portion of said head member which communicates with said first passageway when said head member is positioned on said shaft, a second passageway formed centrally through said radial portion of said head member communicating directly with said enlarged opening, and a tubular hose means interconnected between said nozzle and said radial head portion anchored to the underside of said wiper arm.
Claim 8
Dependent Claim
29 words
The improvement according to claim 5 wherein said conduit means includes a sealing means positioned in said enlarged opening in sealing engagemEnt between said drive shaft and head member.
Claim 9
Dependent Claim
45 words
The improvement according to claim 6 wherein said enlarged central opening includes an upper ceiling portion, said drive shaft including a driver attached thereto which forms a tight fit with said head member opening, said sealing means being disposed intermediate said ceiling portion and drive.
Claim 10
Dependent Claim
41 words
The improvement according to claim 1 wherein the outlet portion of said head member is rotatable relative the remainder thereof, said conduit means including a rubber connector connecting the outlet of said second passageway with the inlet of said third passageway.
Claim 11
Dependent Claim
52 words
The improvement according to claim 1 wherein said nozzle includes a constricted discharge orifice which disperses the fluid under pressure, said nozzle further including a sloped face which causes particle break-up whereby a spray is developed providing fluid dispersement onto said windshield along a substantial portion in close proximity of said blade.
Claim 12
Dependent Claim
33 words
The assembly according to claim 5 wherein said nozzle includes an impact surface sloped relative the direction of fluid discharge to cause fluid particle break-up as the fluid is dispensed over the windshield.
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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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |