Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1988-01-06
1989-08-08
Garrett, Robert E.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
913691, F15B 910
Patent
active
048542202
ABSTRACT:
A pull-type booster includes a hollow body in which a movable wall is movably received to divide an interior thereof into a negative pressure chamber and a pressure-variable chamber. The movable wall has a tubular portion extending outwardly of the body and having an axial internal bore. The tubular portion is disposed in a room or chamber. A tubular cover member is mounted around the tubular portion to cover it and has an inlet in communication with the internal bore. An air tube has one end connected to the inlet, and the other end of the air tube is disposed outside of the room. A valve device is mounted within the internal bore for communicating the inlet with the pressure-variable chamber through the internal bore to introduce the ambient air outside of the room into the pressure-variable chamber via the air tube when the valve device is in a pressure-differential generating position, thereby moving the movable wall relative to the body due to a pressure differential between the negative pressure chamber and the pressure-variable chamber.
REFERENCES:
patent: 2794320 (1957-06-01), Rockwell
patent: 3150493 (1964-09-01), Rike
patent: 3362298 (1968-01-01), Julow
patent: 3452646 (1969-07-01), Abbott et al.
patent: 3786903 (1984-10-01), Haga et al.
patent: 4259893 (1981-04-01), Ando et al.
patent: 4597320 (1986-07-01), Kamio
patent: 4667567 (1987-05-01), Morimoto
Garrett Robert E.
Nippon Air Brake Co., Ltd.
Williamson Mark A.
LandOfFree
Pull-type booster does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pull-type booster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pull-type booster will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-897899