A galley cart bay door latch system serves to secure catering or galley carts, as are used on commercial aircraft, within the aircraft's galley. The system relies on two substantially horizontally disposed latch levers to secure the galley door which in turn restrains a galley cart in position withi
A galley cart bay door latch system serves to secure catering or galley carts, as are used on commercial aircraft, within the aircraft's galley. The system relies on two substantially horizontally disposed latch levers to secure the galley door which in turn restrains a galley cart in position within the galley. The ends of the latch levers are received in a recess formed in the door to secure the door. Raising the latch lever releases the door and positively pushes the door outwardly. The latching configuration allows the doors to be slammed shut without the need to further manipulate the latch levers.
대표청구항▼
1. A latching system for latching and unlatching a door of a galley cart bay of an aircraft galley, said galley cart bay door mounted to said galley cart bay of said aircraft galley for releasably retaining said aircraft galley cart within the galley cart bay, said galley cart bay door being movable
1. A latching system for latching and unlatching a door of a galley cart bay of an aircraft galley, said galley cart bay door mounted to said galley cart bay of said aircraft galley for releasably retaining said aircraft galley cart within the galley cart bay, said galley cart bay door being movable between a closed position closing the galley cart bay for retaining the aircraft galley cart within the galley cart bay and an open position for releasing the aircraft galley cart for removal from the galley cart bay; said latching system comprising: at least one latch lever having an inner and an outer end, said inner end being pivotally mounted to the aircraft galley, said outer end of said at least one latch lever including a lever retainer member releasably engageable with a portion of the galley cart bay door, said outer end of said at least one latch lever being pivotally movable between a door engaging position engaging said galley cart bay door and retaining said galley cart bay door in the closed position and a door releasing position releasing said galley cart bay door to move to the open position, and said inner end of said at least one latch lever including a cam slot releasably engageable with a cam operated rod slidably mounted between said cam slot and an interior side of said galley cart bay door. 2. The latching system of claim 1, wherein said inner end of said at least one latch lever includes a mounting boss including upper and lower detent stops, and said inner end of said at least one latch lever is pivotally mounted in a support bracket connected to the aircraft galley, said support bracket including a detent biased outwardly to alternatingly removably engage one of said upper and lower detent stops of said mounting boss. 3. The latching system of claim 2, wherein said detent comprises a spring loaded detent. 4. The latching system of claim 2, wherein said detent comprises a spring loaded ball bearing located in a hole in the support bracket. 5. The latching system of claim 2, wherein said upper and lower detent stops comprise hemispherical recesses in said mounting boss. 6. The latching system of claim 1, further comprising a compression spring disposed intermediate said cam slot and said cam operated rod, said compression spring being biased to cause said cam operated rod to push outwardly against said cart bay door when said cart bay door is in the closed position and when said at least one latch lever is moved to said open position. 7. The latching system of claim 1, wherein said lever retainer member comprises a lever T bar retainer member. 8. The latching system of claim 1, wherein said galley cart bay door includes at least one positive location nub extending outwardly from said galley cart bay door and said lever retainer member is releasably engageable with said at least one positive location nub in said door engaging position of said outer end of said at least one latch lever. 9. The latching system of claim 8, further comprising a door seal disposed between an interior side of the galley cart bay door and the galley cart bay for sealing the galley cart bay door against the galley cart bay in the closed position of the galley cart bay door, and wherein said at least one positive location nub is configured to cause said at least one latch lever to compress said door seal against the galley cart bay in the closed position of the latch lever when said galley cart bay door is closed and said outer end of said at least one latch lever is in said door engaging position, such that positive closure of said galley cart bay door is achieved by depressing said at least one latch lever past said at least one positive location nub. 10. The latching system of claim 9, wherein said at least one positive location nub comprises first and second positive location nubs, and positive closure is achieved by depressing said at least one latch lever past said first and second positive location nubs. 11. The latching system of claim 1, wherein when said galley cart bay door is moved to said closed position, said cam rod is pushed against said compression spring and said cam slot, and is operative to move said at least one latch lever to said door engaging position. 12. The latching system of claim 1, wherein said at least one latch lever comprises first and second latch levers independently releasably engageable with said portion of said galley cart bay door. 13. The latching system of claim 12, wherein said first and second latch levers are mounted in a support bracket, said inner ends of said first and second latch levers each including a mounting boss including upper and lower detent stops, and said inner ends of said first and second latch levers each being pivotally mounted in a support bracket connected to said aircraft galley, said support bracket including detents biased outwardly to alternatingly removably engage one of said upper and lower detent stops of said mounting bosses of said first and second latch levers to provide independent primary and secondary latching of the cart bay door. 14. A latching system for latching and unlatching a galley cart bay door of a galley cart bay of an aircraft galley for receiving an aircraft galley cart within the galley cart bay, the galley cart bay door being movable between a closed position closing said galley cart bay for retaining said aircraft galley cart within the galley cart bay and an open position for releasing said aircraft galley cart for removal from the galley cart bay, the latching system comprising: first and second latch levers each having an inner and an outer end, said inner ends of said first and second latch levers each being pivotally mounted to the aircraft galley, said outer ends of said first and second latch levers each including a lever retainer member releasably engageable with corresponding first and second lever receiving portions of the galley cart bay door, respectively, said outer ends of said first and second latch levers each being independently movable between a door releasing position releasing said galley cart bay door to move to the open position and a door engaging position releasably engaging said corresponding first and second lever receiving portions of said galley cart bay door and retaining said galley cart bay door in the closed position, said inner ends of said first and second latch levers including corresponding cam slots, respectively, said corresponding cam slots being releasably engageable with corresponding cam operated rods slidably mounted between said corresponding cam slots and an interior side of said cart bay door, said inner ends of said first and second latch levers each including corresponding compression springs disposed intermediate said corresponding cam slots and said corresponding cam operated rods, said compression springs being biased to cause said corresponding cam operated rods to push outwardly against said cart bay door when said cart bay door is in the closed position and when either or both of said first and second latch levers are moved to said open position; andsaid first and second lever receiving portions of said galley cart bay door each including corresponding positive location nubs extending outwardly from said galley cart bay door, said lever retainer members being releasably engageable with said corresponding positive location nubs of said corresponding first and second lever receiving portions of said galley cart bay door in said door engaging position of said outer ends of said first and second latch levers. 15. The latching system of claim 14, further comprising a door seal disposed between an interior side of the galley cart bay door and the galley cart bay for sealing the galley cart bay door against the galley cart bay in the closed position of the galley cart bay door, and wherein said corresponding positive location nubs are configured to cause said first and second latch levers to compress said door seal against the galley cart bay in the closed position of the latch lever when said galley cart bay door is closed and said outer end of said first and second latch levers is in said door engaging position, such that positive closure of said galley cart bay door is achieved by depressing said first and second latch levers past said corresponding positive location nubs. 16. The latching system of claim 14, wherein when said galley cart bay door is moved to said closed position, said corresponding cam rods are configured to be pushed against said corresponding compression springs and said corresponding cam slots, and are operative to move said first and second latch levers to said door engaging position. 17. The latch of claim 14, wherein said first and second latch levers are mounted in a support bracket, said inner ends of said first and second latch levers each including a mounting boss including upper and lower detent stops, and said inner ends of said first and second latch levers each being pivotally mounted in a support bracket connected to said aircraft galley, said support bracket including first and second detents biased outwardly to alternatingly removably engage corresponding ones of said upper and lower detent stops of said mounting bosses of said first and second latch levers to provide independent primary and secondary latching of the cart bay door. 18. The latching system of claim 17, wherein said first and second detents comprise spring loaded detents.
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이 특허에 인용된 특허 (26)
Dessenberger Arthur W. ; Jackson Frank Thomas, Adjustable pressure relief latch.
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