The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1989
Filed:
Feb. 02, 1988
Applicant:
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
2392841 ; 239446 ; 137594 ; 4151522 ;
Abstract
A device for delivering washing liquid to two spraying nozzles spaced from each other at two areas of a pane being washed or two panes being washed comprises a pump with a rotor driven in two opposite directions and a delivery unit connected to the pump and having two pressure chambers with two outlets connected to the respective nozzles and each alternatively receiving the liquid from the pump. A limiter which separates the chambers from each other has two portions movable under pressure and each provided with a sealing diaphragm which closes the respective outlet. Two diaphragms can close both outlets when the pump is in non-operative position.