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US 2026/0048830 A1Published application
Door latching apparatus
AssigneeThe Boeing Company
InventorAndrew James Hubbard
Life of this patent
Estimating the term…
Abstract
Door latching systems, apparatus, articles of manufacture, and methods are disclosed. An example door latch includes a lever operatively coupled to a gear, the lever to rotate based on rotation of the gear, a worm screw operatively coupled to the gear, and a cam surface opposite the lever and fixed relative to the lever. The lever contacts the cam surface between a first rotational position and a second rotational position, the second rotational position different from the first rotational position.
Claims20
A door latch comprising:
- a lever operatively coupled to a gear, the lever to rotate based on rotation of the gear;
- a worm screw operatively coupled to the gear;
- and
- a cam surface opposite the lever and fixed relative to the lever, the lever to contact the cam surface between a first rotational position and a second rotational position, the second rotational position different from the first rotational position.
1 more element
A compartment of an aircraft comprising:
- a chamber disposed inside the aircraft;
- an opening to connect the chamber to an exterior of the aircraft, the opening disposed on a skin of the aircraft;
- a hatch moveably coupled to the compartment and disposed in the opening, the hatch to move between a closed position and an open position;
- a crank to selectively couple with a cam surface, the crank and the cam surface disposed in the chamber, the crank and the cam surface to prevent movement of the hatch towards the open position when the crank is coupled with the cam surface;
- and
- a worm drive coupled to the crank and disposed in the chamber, the worm drive to rotate the crank based on receiving an input torque.
3 more elements
An aircraft comprising:
- a door covering an inner cavity of the aircraft, the door rotationally coupled to the aircraft about a first axis of rotation, the door to rotate between an open position and a closed position, the door contoured such that the door maintains an aerodynamic shape of the aircraft while in the closed position, the door including a seal around a perimeter of the door, the seal to deform when the door is in the closed position;
- a latch coupled to the inner cavity, the latch to selectively prevent rotation of the door, the latch including:
- a lever having a second axis of rotation different than the first axis of rotation;
- a worm gear including a gear and a screw, the gear operatively coupled to the lever;
- and
- a cam to contact the lever to prevent the door from moving towards the open position when the cam contacts the lever;
- and
- a hole in a skin of the aircraft, the hole disposed proximate the screw to allow a tool to enter the hole and engage the screw.
5 more elements
Dependencies are inferred from the claim text.