Window regulator with cushioned up stop
US5497578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1994 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Oct 7, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/55
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cross-arm window regulator for moving a window between raised, intermediate and lowered positions in a vehicle door, includes a resilient stop cushion housed in the lift channel mounted on the glass. Sliders mounted on the ends of the lift and cross arms engage the ends of the cushion as the window nears raised position, gradually compressing it to cushion window movement to raised position. If the geometry is the same for raised and lowered positions, the same cushioning will also occur in the window lowered position. The spring rate increases as compression occurs. The cushion can be a foam butyl rubber strip or a metal spring of various types. The spring rate can be tailored by making the cushion a dual density foam strip, a foam strip with holes of varying sizes to provide a variable cross-section, or a coated foam strip. An integral stop can be included in the form of a hard plastic shell for the foam strip or spring. A similar single arm regulator includes a foam extension on either side of the single slider for compression against spaced tabs in the channel. Alternatively, an extension or compression spring can be used for cushioning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.