Door closure mechanism
AssigneeHamilton Sundstrand Corporation
InventorPawel KWASNIEWSKI
Life of this patent
Estimating the term…
Abstract
There is provided a door mechanism comprising a door and a door closure mechanism for moving the door between a first, open, position and second, closed position. The door closure mechanism comprises a drive motor coupled to a drive screw, the drive screw having a first, right handed thread portion and a second, left handed thread portion, a first drive nut threadedly engaged with the first thread portion, a second drive nut threadedly engaged with the second thread portion, a first drive linkage pivotally coupled to the first drive nut at one end and to the door at a second, opposed end, and a second drive linkage pivotally coupled to the second drive nut at one end and to the door at a second, opposed end.
Claims15
A door mechanism comprising:
- a door;
- and
- a door closure mechanism for moving the door between a first, open, position and second, closed position, the door closure mechanism comprising:
- a drive motor coupled to a drive screw, the drive screw having a first, right handed thread portion and a second, left handed thread portion;
- a first drive nut threadedly engaged with the first thread portion;
- a second drive nut threadedly engaged with the second thread portion;
- a first drive linkage pivotally coupled to the first drive nut at one end and to the door at a second, opposed end;
- a second drive linkage pivotally coupled to the second drive nut at one end and to the door at a second, opposed end;
- whereby rotation of the drive motor causes the first and second drive in opposite directions along the drive screw so as to raise or lower the door relative to the drive screw.
A door assembly comprising:
- an door opening;
- and
- a door mechanism movable to open and close the door opening, the door mechanism comprising:
- a door;
- and
- a door closure mechanism for moving the door between a first, open, position and second, closed position, the door closure mechanism comprising:
- a drive motor coupled to a drive screw, the drive screw having a first, right handed thread portion and a second, left handed thread portion;
- a first drive nut threadedly engaged with the first thread portion;
- a second drive nut threadedly engaged with the second thread portion;
- a first drive linkage pivotally coupled to the first drive nut at one end and to the door at a second, opposed end;
- a second drive linkage pivotally coupled to the second drive nut at one end and to the door at a second, opposed end;
- whereby rotation of the drive motor causes the first and second drive nuts in opposite directions along the drive screw so as to raise or lower the door relative to the drive screw.
Dependencies are inferred from the claim text.