EP0411428A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Windscreen washer pump for vehicle
Assignee: Asmo Co Ltd
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Filing: 1990-07-24
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Granted: —
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Expires: 2010-07-24
Abstract
Abstract Disclosed herein is a windscreen washer pump, which is suitable for use with a vehicle, of a type wherein washer fluid is forcibly pressurized by means of an impeller (22), to be supplied to a vehicle windscreen or the like. A plurality of supplemental vanes (22d) are provided between the impeller (22) and an inlet (12) for entry of the washer fluid. The plurality of supplemental vanes (22d) serve to introduce the washer fluid from the inlet (12) into the impeller (22) and forcibly pressurize the fluid from the impeller (22) even in a case where air is mixed.
Inventors
- 👤 Takeshi Kamimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 03:55
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/001; F04D9/002; B; B60; B60S; B60S1/00; B60S1/02; B60S1/46; B60S1/48; B60S1/481; F04D29/00; F04D29/18; F04D29/22; F04D29/2261; F04D29/2277; F04D5/00; F04D5/002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A windscreen washer pump of a type wherein washer fluid is introduced into an impeller provided in a pump chamber from an inlet and said impeller is rotated by driving a motor to forcibly pressurize said washer fluid to spray to a desired position, characterized in that a plurality of supplemental vanes designed to be rotated together with said impeller in response to the driving force of said motor are provided between said impeller and said inlet and said washer fluid delivered from said inlet is introduced into said impeller by said plurality of supplemental vanes, thereby to be delivered from said impeller even in a case where air is mixed.
Claim 2
Dependent Claim
111 words
A windscreen washer pump of a type wherein washer fluid is introduced into an impeller provided in a pump chamber from an inlet and said impeller is rotated by driving a motor to forcibly pressurize said washer fluid to spray to a desired position, characterized in that a plurality of supplemental vanes designed to be rotated together with said impeller in response to the driving force of said motor are provided between said impeller and said inlet and said washer fluid delivered from said inlet is introduced into said impeller by said plurality of supplemental vanes, thereby to be delivered from said impeller even in a case where air is mixed.
Claim 3
Dependent Claim
35 words
A windscreen washer pump according to Claim 1, wherein said plurality of supplemental vanes are provided within a supplemental space partitioned by a partition wall from a flow channel in which said impeller is contained.
Claim 4
Dependent Claim
41 words
A windscreen washer pump according to Claim 2, wherein said partition wall is provided around said impeller and a cut-away portion is formed on part of said partition wall so as to be a forced-fluid path communicating with said flow channel.
Claim 5
Dependent Claim
32 words
A windscreen washer pump according to Claim 3, wherein an air vent for expelling air within said supplemental space is formed in said supplemental space, said flow channel or said forced-fluid path.
Claim 6
Dependent Claim
20 words
A windscreen washer pump according to Claim 4, wherein said air vent communicates at its other end with said inlet.
Claim 7
Dependent Claim
20 words
A windscreen washer pump according to Claim 1, wherein said plurality of supplemental vanes are disposed coaxially with said impeller.
Claim 8
Dependent Claim
21 words
A windscreen washer pump according to Claim 6, wherein said plurality of supplemental vanes are fixedly secured integrally with said impeller.
Claim 9
Dependent Claim
28 words
A windscreen washer pump according to Claim 7, wherein said plurality of supplemental vanes are a plurality of plate members disposed in a radial direction of said impeller.
Claim 10
Dependent Claim
27 words
A windscreen washer pump according to Claim 1, wherein said plurality of supplemental vanes are disposed around a rotary shaft of said motor secured to said impeller.
Claim 11
Dependent Claim
98 words
A windscreen washer pump according to Claim 1, wherein a hole for causing said washer fluid delivered from said inlet to pass through the outer periphery of the rotary shaft of said motor along the rotary shaft thereof is formed in a housing, and said plurality of supplemental vanes radially disposed around the rotary shaft of said motor is provided in an opposing relationship to the flow of said washer fluid from said hole and also serve to forcibly feed under pressure said washer fluid in the radial direction so as to be delivered to said flow channel.
References Cited (Backward Citations)
No citation records indexed.
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