Vehicle window wipers with alternating symmetrical overlap
US4900995A · kind A · utility
15Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1989 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jun 26, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S318/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pair of wiper blades on a vehicle window are oscillated in opposing movement from an overlapping inner wipe arrangement, with upper and lower overlapped blades, outward to separated outer wipe positions and inward to the overlapping inner wipe arrangement with the positions of the blades reversed. Since the upper blade on the way out becomes the lower blade on the way back, it does not need to pause in its outer wipe position and it thus does not need to be subjected to a large acceleration in maintaining fast wipe cycles on large vehicle windshields. This reduces stress on the arm and blade and blade end whip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.