Door actuator for opening and/or closing a door
AssigneeDormakaba Deutschland GmbH
InventorsAlexander HELLWIG, Thomas SALUTZKI, Sabine WEIMANN
Life of this patent
Estimating the term…
Abstract
A door actuator for opening and/or closing a door, comprising includes a fluid housing with an inner compartment, which is filled with fluid, in particular hydraulic oil, a fluid housing opening in the fluid housing for draining the fluid at thermal overload, a thermally activatable valve for opening, which closes the fluid housing opening, and a collecting device which is disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.
Claims15
A door actuator for opening and/or closing a door, the door actuator comprising:
- a fluid housing with an inner compartment-, which is filled with fluid,
- a fluid housing opening in the fluid housing for draining the fluid at thermal overload,
- a valve configured to closes the fluid housing opening, is a thermally activatable for opening,
- and a collecting device, disposed outside the fluid housing opposite the fluid housing opening, forms a collecting space for the fluid, is open towards the fluid housing opening, and includes at least one drain opening for draining the fluid from the collecting space.
Dependencies are inferred from the claim text.