WINDOW-CLEANING ARRANGEMENT

• US 3,667,081 A
• Filed: 10/29/1970
• Issued: 06/06/1972
• Est. Priority Date: 11/03/1969
• Status: Expired due to Term

• Current Assignee: Karl-Heinz Burger
• Original Assignee: Karl-Heinz Burger
• Inventors: Burger, Karl-Heinz
• Primary Examiner(s): Feldman, Peter
• Application Number:
  US05/085,146
• Time in Patent Office: 586 Days
• Field of Search: 15/250.2,250.24,250.25,250.26,250.29,250.34,250.35
• US Class Current: 15/250.24
• CPC Class Codes: B60S 1/20 by cable drives; by flexible shafts
• CPC Class Codes: B60S 1/3404 the wiper blades being moved substantially parallel with themselves
• CPC Class Codes: B60S 1/60 for signalling devices, e.g. reflectors

Abstract

An arrangement for cleaning light-emitting and light-admitting windows, particularly of motor vehicles. The window to be cleaned has a general plane, two transversely spaced first marginal portions and a second marginal portion which connects the first marginal portions. A carriage is mounted for movement along the second marginal portion between the first marginal portion and carries a wiper arm assembly which moves with it and which is pivotably mounted on it for turning movement about an axis paralleling the general plane of the window. A wiper blade is mounted on the assembly and extends in at least substantial parallelism with the first marginal portions but is offset laterally with respect to the axis. Biasing means biases the assembly pivotably about the axis to maintain the wiper blade in contact with the window.

Claims

1. Arrangement for cleaning windows and the like, particularly for light-emitting covers on vehicle lights and taillights, comprising a window having a general plane, a pair of transversely spaced first marginal portions and a second marginal portion connecting said first marginal portions;

guide means extending along said second marginal portion;

carrier means movable along said guide means from one toward the other of said first marginal portions;

wiper arm means carried by said carrier means for movement with the same and being pivotable with reference to said window about an axis extending in at least substantial parallelism with said general plane;

a wiper blade mounted on said wiper arm means in at least substantial parallelism with said first marginal portions and offset laterally from said axis in direction towards said other of said first marginal portions; and

biasing means biasing said wiper arm means for pivotal movement about said axis in a sense urging said wiper blade into contact with said window.

2. Arrangement as defined in claim 1, said biasing means comprising a spring having a first part bearing against said carrier means and a second part bearing against said wiper arm means.

3. Arrangement as defined in claim 1, said general plane being curved in direction away from said pivot axis at least in the region of said other first marginal portion.

4. Arrangement as defined in claim 1, said carrier means comprising pivot means defining said pivot axis, and said wiper arm means being mounted on said pivot means turnable about said pivot axis;

and wherein said biasing means comprises a biasing spring having a convoluted portion surrounding said pivot means, a firsT arm bearing upon said carrier means, and a second arm bearing upon said wiper arm means.

5. Arrangement as defined in claim 1, said wiper arm means comprising a first arm portion having one end region mounted for pivotal movement about said axis and an other end region, and a second arm portion carried by said other end region of said first arm portion and having a free end;

and wherein said wiper blade is mounted on said free end.

6. Arrangement as defined in claim 5, said arm portions together constituting a one-armed lever.

7. Arrangement as defined in claim 1;

further comprising drive means for moving said carrier means along said guide means between said marginal portions.

8. Arrangement as defined in claim 7, said drive means comprising a flexible semi-rigid cable connected with said carrier means and having a portion remote from the same, at least said portion being externally threaded, and drive gear means camming with the threads on said portion.

9. Arrangement as defined in claim 1, said carriage means comprising a plurality of telescopic rod sections having a common axis which extends longitudinally of said guide means and including one terminal section mounted for pivotal movement about said axis, and an other terminal section constituting said wiper arm means.

10. Arrangement as defined in claim 9;

and further comprising drive means for alternately extending and retracting said telescopic sections along said common axis.