Patent US3591887A successfully refreshed from Google Patents.
US3591887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windscreen washer device
Assignee: Individual
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Filing: 1969-02-13
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Granted: 1971-07-13
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Expires: 1989-02-13
Abstract
Abstract A windscreen washer assembly including a rotary positive displacement pump driven from the wiper spindle and feeding washing fluid to a washing fluid applying device mounted on the wiper arm. Preferably the blade support is hollow and includes apertures through which the washing fluid can be applied to the windscreen from the leading side of the blade support. conveniently hot or cold water can be applied by manipulation of a selector valve.
Inventors
- 👤 James Edward Keddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:58
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/52; B60S1/522; B60S1/524
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
In a washer assembly for a vehicle windscreen, having windscreen wiper arm means, and pivot means having an axis for pivoting said wiper arm means for wiping movement across said windscreen about said pivot axis: a. washing flUid supply means for conveying washing fluid to said wiper arm means; b. washing fluid applying means mounted on said wiper arm means for applying washing fluid to a windscreen being wiped; c. oscillatory pump means connected directly to said wiper arm means and communicated with said washing fluid supply means, for executing pumping strokes driven by wiping movement of said wiper arm means; d. passage means extending internally of said wiper arm means to communicate said pump means with said washing fluid applying means; and e. said pump means including a first pump member, means for mounting said first pump member nonmovably with respect to a vehicle, and a second pump member movable with respect to first pump member and rigidly connected to the wiper arm means for joint pivotal movement about said pivot means.
Claim 2
Dependent Claim
173 words
In a washer assembly for a vehicle windscreen, having windscreen wiper arm means, and pivot means having an axis for pivoting said wiper arm means for wiping movement across said windscreen about said pivot axis: a. washing flUid supply means for conveying washing fluid to said wiper arm means; b. washing fluid applying means mounted on said wiper arm means for applying washing fluid to a windscreen being wiped; c. oscillatory pump means connected directly to said wiper arm means and communicated with said washing fluid supply means, for executing pumping strokes driven by wiping movement of said wiper arm means; d. passage means extending internally of said wiper arm means to communicate said pump means with said washing fluid applying means; and e. said pump means including a first pump member, means for mounting said first pump member nonmovably with respect to a vehicle, and a second pump member movable with respect to first pump member and rigidly connected to the wiper arm means for joint pivotal movement about said pivot means.
Claim 3
Dependent Claim
54 words
The assembly of claim 1, wherein said first pump member is constructed as the major segment of a cylinder, and said second pump member comprises a hollow part-cylindrical component mounted sealingly within said first pump member and having a chordally extending wall, and wherein flap valve means are formed on said chordally extending wall.
Claim 4
Dependent Claim
39 words
The assembly of claim 2, wherein said first pump member includes partition walls extending substantially radially of the pump and in an inverted V-shaped orientation, and wherein further flap valve means are provided in each of said partition walls.
Claim 5
Dependent Claim
52 words
The assembly of claim 1 mounted in a vehicle including a source of hot water, and a source of cold water, said assembly including a two way selector valve communicating with the pump means and with said sources for selectively introducing water from either of said sources to feed said pump means.
Claim 6
Dependent Claim
28 words
The assembly of claim 1 mounted in a vehicle having water catchment surface means, said washing fluid supply means being in communication with said water catchment surface means.
Claim 7
Dependent Claim
71 words
The assembly of claim 1, hollow wiper blade support means communicated with said washing fluid supply means, and carried by said wiper arm means, and a wiper blade supported by said support means, the washing fluid applying means comprising aperture means formed in said hollow wiper blade support means, and said wiper arm means being hollow and communicating with said washing fluid supply means and said hollow wiper blade support means.
Claim 8
Dependent Claim
43 words
The assembly of claim 6 wherein the wiper blade has two ends, one near and the other remote from said pivot axis, and wherein the support means adjacent said remote end is constructed to define an array of apertures forming said aperture means.
Claim 9
Dependent Claim
23 words
The assembly of claim 7, wherein said array of apertures extends along one third of the extent of said hollow blade support means.
Claim 10
Dependent Claim
121 words
The assembly of claim 1, wherein said washing fluid applying means comprises a tube connected to and communicating with said wiper arm means, an outer sleeve mounted coaxially around said tube for rotation thereabout, means for limiting rotation of said outer sleeve relative to said tube between first and second angularly spaced positions, a first linear array of apertures extending axially along said outer sleeve, and a second array of apertures disposed along said tube for registration with the apertures of said first array when said outer sleeve is in its first position; and wherein a wiper blade is carried by said outer sleeve and has first and second sides, said first side being positioned adjacent said first array of apertures.
Claim 11
Dependent Claim
75 words
The assembly of claim 9, including a third plurality of apertures disposed adjacent said second side of said wiper blade, said third plurality of apertures being spaced from said first plurality of apertures by an angular distance equal to the angular distance between said first and second positions of the outer sleeve, said third plurality of apertures being in register with said second plurality of apertures when the outer sleeve is in its second position.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |