Patent US3888412A successfully refreshed from Google Patents.
US3888412A
Expired / Lapsed
US
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Apparatus for heating the fluid in a windshield washer system
Assignee: Kenilworth Research & Dev Corp
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Filing: 1973-04-17
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Granted: 1975-06-10
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Expires: 1993-04-17
Abstract
Abstract Windshield washer systems in which heat exchangers are located with respect to the reservoir containing the windshield washer fluid to heat the fluid.
Inventors
- 👤 Herbert Lindo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/50; B60S1/487; F; F16; F16L; F16L41/00; F16L41/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87362
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
234 words
Apparatus for heating fluId in a windshield system of a motor vehicle having a liquid cooling system including a heater line in which the cooling system fluid flows, comprising a reservoir for holding windshield washer fluid, an opening formed in a portion of a wall of said reservoir, heat exchanger means comprising a heat exchanger housing of closed configuration and being of a size to fit through said opening and located completely within said reservoir, said heat exchanger housing having extending fin members for immersion in the windshield washer fluid and having a generally serpentine internal fluid flow passage therein with an inlet and an outlet, said heat exchanger also being formed with an open section in communication with the inlet and outlet of said fluid flow passage, a pair of nipples located in said housing open section in fluid flow communication respectively with the inlet and outlet of said fluid flow passage, a respective hose extending through said reservoir opening and attached to each of said nipples, cover means fastened to said heat exchanger housing at said open section and engaging said hoses to hold them in fixed relationship with the heat exchanger housing, and means for coupling said hoses to the cooling system heater line of the vehicle to bypass a portion of the cooling system fluid through the fluid flow passage of the heat exchanger and back to the cooling system.
Claim 2
Dependent Claim
234 words
Apparatus for heating fluId in a windshield system of a motor vehicle having a liquid cooling system including a heater line in which the cooling system fluid flows, comprising a reservoir for holding windshield washer fluid, an opening formed in a portion of a wall of said reservoir, heat exchanger means comprising a heat exchanger housing of closed configuration and being of a size to fit through said opening and located completely within said reservoir, said heat exchanger housing having extending fin members for immersion in the windshield washer fluid and having a generally serpentine internal fluid flow passage therein with an inlet and an outlet, said heat exchanger also being formed with an open section in communication with the inlet and outlet of said fluid flow passage, a pair of nipples located in said housing open section in fluid flow communication respectively with the inlet and outlet of said fluid flow passage, a respective hose extending through said reservoir opening and attached to each of said nipples, cover means fastened to said heat exchanger housing at said open section and engaging said hoses to hold them in fixed relationship with the heat exchanger housing, and means for coupling said hoses to the cooling system heater line of the vehicle to bypass a portion of the cooling system fluid through the fluid flow passage of the heat exchanger and back to the cooling system.
Claim 3
Dependent Claim
61 words
Apparatus as in claim 1 wherein said coupling means comprises a coupling fitting having outlet and return arms branching from a main arm having a through passage, said main arm of said fitting connected with its through passage in series in only one line of the cooling system, a respective one of said hoses connected to an arm of said fitting.
Claim 4
Dependent Claim
53 words
Apparatus as in claim 2 wherein said coupling fitting outlet branch arm is disposed at an acute angle to the direction of flow of the cooling system liquid in its main arm, and the return branch arm is disposed at an obtuse angle to the direction of flow of the cooling system liquid.
Claim 5
Dependent Claim
21 words
Apparatus as in claim 3 wherein said main arm has a portion of a reduced diameter between the two branch arms.
Claim 6
Dependent Claim
23 words
Apparatus as in claim 1 further comprising a vent for said reservoir to relieve excess pressure built up upon heating the fluid therein.
Claim 7
Dependent Claim
30 words
Apparatus as in claim 1 wherein said reservoir includes a second opening into the reservoir interior separate from said first opening through which a fluid extraction means can be inserted.
Claim 8
Dependent Claim
81 words
Apparatus as in claim 1 wherein said coupling means comprises a coupling fitting connected in said heater line, said fitting having a central body with a through fluid flow passage having sections of different diameters and an arm attached to said central body at an acute angle thereto to which respective one of said hoses is to be attached, said arm having a fluid flow passage of smaller diameter than the smallest diameter of the flow passage of the central body.
Claim 9
Dependent Claim
26 words
Apparatus as in claim 7 wherein the flow passage of the arm communicates with the largest diameter section of the flow passage of the central body.
Claim 10
Dependent Claim
90 words
Apparatus as in claim 1 wherein the coupling means comprises a respective coupling fitting for each of the cooling system inlet and return lines, each said fitting having a branch arm adapted to have an end of a respective one of said hoses connected thereto and a main arm for connection in a respective cooling system line, each said branch arm of each said coupling fitting forming an acute angle with its respective main arm in the direction of fluid flow in the respective line in which it is connected.
Claim 11
Dependent Claim
25 words
Apparatus as in claim 1 further comprising a cap for covering said reservoir opening, said hoses extending through said cap to said heat exchanger housing.
References Cited (Backward Citations)
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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 |