WASHER SYSTEMS FOR CLEANING SURFACES

• US 3,656,691 A
• Filed: 03/20/1970
• Issued: 04/18/1972
• Est. Priority Date: 04/02/1969
• Status: Expired due to Term

• Current Assignee: Leif Roland Norstrand
• Original Assignee: Leif Roland Norstrand
• Inventors: Norstrand, Leif Roland
• Primary Examiner(s): King, Lloyd L.
• Application Number:
  US05/021,274
• Time in Patent Office: 760 Days
• Field of Search: 239/284,222.4
• US Class Current: 239/284.2
• CPC Class Codes: B60S 1/522 moving liquid spreading means, e.g. arranged in wiper arms
• CPC Class Codes: B60S 1/60 for signalling devices, e.g. reflectors

Abstract

A washer system for cleaning surfaces such as automobile headlights directs jets or shots of liquid from a nozzle against the dirty surface. The nozzle is spring-biased toward the surface to be cleaned, and each shot moves the nozzle by jet reaction from the start position near the surface to a position farther away from the surface along a path such that the sprayed area progressively increases concentrically outwardly. The spring returns the nozzle to the start position between shots.

Claims

2. A system as claimed in claim 1, and an arm on which said nozzle is mounted for swinging movement about an axis, and means mounting said arm so that said axis is positioned outside the surface to be cleaned.

3. A system as claimed in claim 2, and spring means urging said arm toward a position in which said nozzle is adjacent said surface.

4. A system as claimed in claim 3, and set screw means for adjustably positioning the nearest approach of said nozzle to said surface.

5. A system as claimed in claim 4, and further set screw means for adjustably positioning the farthest position of said nozzle from said surface.

6. A system as claimed in claim 5, said spring means acting against said further set screw means.

7. A system as claimed in claim 1, said mounting means comprising an upwardly extending arm that positions said nozzle in front of said surface, and means mounting said arm for vertical swinging movement about a horizontal axis which is disposed below said surface.

8. A system as claimed in claim 1, said nozzle projecting a circular spray, said mounting means comprising a slender upright arm on which said nozzle is mounted for vertical swinging movement toward and away from said surface under the reaction force of the ejected liquid.

9. A system as claimed in claim 8, said nozzle directing said spray in a direction transverse to said arm.