Patent · US Expired

Device, especially reciprocating wiper system for motor vehicles

US4729145A · kind A · utility

10Cited by

6References

6Claims

0Family size

Assignee

SWF Auto-Electric GmbH · DE

Inventors

Bruno Egner-Walter · Heilbronn, DE
Eckhardt Schmid · Bietigheim-Bissingen, DE
Wolfgang Scholl · Gemmrigheim, DE

Key dates

Filing date	Nov 27, 1985
Grant date	Mar 8, 1988
Priority date	—
Expiry date	Nov 27, 2005

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2326/09
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

In a reciprocating wiper system for motor vehicles a piston is linearly displaceably guided in a housing and mounted in a bearing which is seated in a receptacle of the housing. A scraper ring and a sealing ring intended to clean the piston are positioned in front of the bearing. The sealing ring and the scraper ring are jointly mounted in the housing with the bearing as a structural unit. In a preferred embodiment the sealing ring and the scraper ring are held on a universal ball joint being part of the bearing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.