Rolling diaphragm system for deflating weatherstrips

Details Rolling diaphragm system for deflating weatherstrips Rolling diaphragm system for deflating weatherstrips

1989-03-27

1990-05-15

Dorner, Kenneth J.

Movable or removable closures

Closure seal; e.g., striker gasket or weatherstrip

Inflatable or fluid pressure responsive

E06B 716

Patent

active

049246291

ABSTRACT:
A deflatable sealing member forms a weatherstrip to seal a closure opening for a vehicle. The sealing member includes a sealed tubular section to provide tight interference engagement between the closure and the vehicle body. A rolling diaphragm pump deflates the sealing member during closing of the closure. Upon deflation, the sealing member collapses to a reduced cross section. This permits easier closing of the closure and avoids compression shock, common on vehicles having tight fitting weatherstriping. An atmospheric vent valve vents the sealing member to the atmosphere upon closing. As a result, the inherent resiliency of the sealing member returns it to full cross section, restoring the desired tight interference engagement. A vacuum limiter valve is provided to limit the level of vacuum within the pump in order to maintain the closing force below a desired maximum.

REFERENCES:
patent: 2003614 (1935-06-01), Shetzline
patent: 3110065 (1963-11-01), Dennis
patent: 4761917 (1988-08-01), Knecht et al.
patent: 4805347 (1989-02-01), Smith

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