Expansible chamber devices – With guide or seal on cylinder end portion for piston or... – Non-metallic seal means between piston or member and end...
Reexamination Certificate
2005-01-11
2005-01-11
Lopez, F. Daniel (Department: 3745)
Expansible chamber devices
With guide or seal on cylinder end portion for piston or...
Non-metallic seal means between piston or member and end...
C277S917000
Reexamination Certificate
active
06840153
ABSTRACT:
Piston-cylinder unit comprising a cylinder in which a work space is filled with a work medium and which is limited by a closure and is sealed by at least one seal. The closure is fixed axially by a positive engagement with the cylinder up to a temperature threshold and the closure can carry out an axial movement for relieving pressure above the temperature threshold. A cutting device cancels the sealing function of the seal during the axial movement of the closure for relieving pressure.
REFERENCES:
patent: 2954670 (1960-10-01), Helus et al.
patent: 3229848 (1966-01-01), Chabala
patent: 4931688 (1990-06-01), Tosswill
patent: 4988081 (1991-01-01), Dohrmann
patent: 5064030 (1991-11-01), Wöner
patent: 5454455 (1995-10-01), Kundmüller et al.
patent: 5485987 (1996-01-01), Jobelius et al.
patent: 42 16 573 (1993-11-01), None
Asadi Hassan
Bach Wolfgang
Fenn Gerald
Luksch Hans
Wirth Peter
Cohen & Pontani, Lieberman & Pavane
Lopez F. Daniel
ZF Sachs AG
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