Motors: expansible chamber type – With motive fluid valve – Valved piston
Patent
1998-02-13
2000-03-28
Ryznic, John E.
Motors: expansible chamber type
With motive fluid valve
Valved piston
92 62, 92 63, 92113, 92130A, 91432, F15B 1108
Patent
active
060416904
ABSTRACT:
A pneumatic drive unit is provided for partially opening a vehicle body part such as a trunk lid. The pneumatic drive unit includes a working chamber which in use applies pressure to move a control member which engages a contact surface of the vehicle body part. A vent channel is provided which selectively connects the working chamber with the atmosphere as a function of the position of a movable closing element of the drive unit element and contact of the control member with the vehicle body part such that when the body part is closed after a partial opening, the drive unit is ready for another control operation.
REFERENCES:
patent: 300401 (1884-06-01), Sjogren
patent: 3139008 (1964-06-01), Haanes
patent: 3152524 (1964-10-01), Newell
patent: 3270626 (1966-09-01), Bradbury
patent: 3555971 (1971-01-01), Schroder
patent: 3828651 (1974-08-01), Dorner et al.
patent: 4531451 (1985-07-01), Mouton
patent: 5301598 (1994-04-01), Sonnabend
Feichtiger Dieter
Lindmayer Martin
Schaible Kurt
Daimler-Benz AG
Ryznic John E.
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