Bellows system for deflating weatherstrips
US4805347A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Sep 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60J10/244
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A deflatable sealing member forms a weatherstrip to seal a closure opening. The sealing member includes an operative tubular section designed to provide tight interference engagement between the closure and vehicle body when vented to atmosphere and expanded by built-in resilient memory. A bellows pump is connected to the sealing member through a flow control circuit. The bellows pump serves to deflate the sealing member during closing of the closure. The bellows pump is adapted for convenient mounting in a cavity in the closure or vehicle body spaced from the closure hinge area. A flexible cable connects the bellows pump to the closure or vehicle body to provide the necessary actuation for operation of the bellows pump in response to the swinging movement of the closure. As the closure closes and latches, a valve is opened to vent the sealing member to ambient pressure, and the sealing member expands by resilient memory to its full cross section so as to provide a tight seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.