A lift mechanism. The lift mechanism includes a base configured to support the lift mechanism in an upright position. A neck is upstanding from the base. A lift bracket is coupled to the neck. A coupling bracket includes a U-shape having a base and arms extending from opposing ends of the base. The base is coupled to the lift bracket. A linear actuator is configured to move the lift bracket up and down along the neck.

A lift mechanism. The lift mechanism includes a base configured to support the lift mechanism in an upright position. A neck is upstanding from the base. A lift bracket is coupled to the neck. A coupling bracket includes a U-shape having a base and arms extending from opposing ends of the base. The base is coupled to the lift bracket. A linear actuator is configured to move the lift bracket up and down along the neck.

An aircraft jack and system is provided. The present aircraft jack may use electric, as opposed to hydraulic power. A scale may be incorporated into the jack to determine the lift load of the aircraft jack and a leveling device may be used to properly level the aircraft when lifted. A system of multiple jacks may allow the multiple aircraft jacks to communicate with each other and to synchronize movement electronically and automatically. A worm gear may also reduce the occurrence of collapse.

A rigid drive chain comprises a plurality of links connected end-to-end. The links have a block end including a pair of receptacles, a driving face and a driven face. The links have a connector end including a tongue. The block end and connector end are one-piece members that include a plurality of gear teeth along one side of both the block end and connector end. A plurality of protrusions or pins connect the tongues to the receptacles. The links are adapted to be pivoted by a driving gear between a driving orientation of the links with the driving face engaging the driven face of an adjacent link in a forward direction.

A rigid drive chain comprises a plurality of links connected end-to-end. The links have a block end including a pair of receptacles, a driving face and a driven face. The links have a connector end including a tongue. The block end and connector end are one-piece members that include a plurality of gear teeth along one side of both the block end and connector end. A plurality of protrusions or pins connect the tongues to the receptacles. The links are adapted to be pivoted by a driving gear between a driving orientation of the links with the driving face engaging the driven face of an adjacent link in a forward direction.

An elevating post includes a transmission (10), a driver (20), an outer tube (30) and a moving assembly (40). The driver (20) is connected to the transmission (10). The outer tube (30) receives the transmission (10) and the driver (20) and has a tube body (31) with a longitudinal trough (311). Two closed sections (312, 313) are separately disposed outside two ends of the longitudinal trough (311). The moving assembly (40) is operatably connected to the transmission (10) and has a plate (43) protruding from the tube body (31) by passing through the longitudinal trough (311) and being movable in the longitudinal trough (311).

An elevating post includes a transmission (10), a driver (20), an outer tube (30) and a moving assembly (40). The driver (20) is connected to the transmission (10). The outer tube (30) receives the transmission (10) and the driver (20) and has a tube body (31) with a longitudinal trough (311). Two closed sections (312, 313) are separately disposed outside two ends of the longitudinal trough (311). The moving assembly (40) is operatably connected to the transmission (10) and has a plate (43) protruding from the tube body (31) by passing through the longitudinal trough (311) and being movable in the longitudinal trough (311).

A landing gear system and method of actuating the landing gear system, the system including a first leg assembly, a second leg assembly, a cross-shaft arranged between the two leg assemblies, and a landing gear actuator. The landing gear actuator includes a motor and a coupling shaft which is arranged to couple and decouple the landing gear actuator from the cross-shaft.

A rigid drive chain comprises a plurality of links connected end-to-end. The links have a block end including a pair of receptacles, a driving face and a driven face. The links have a connector end including a tongue. The block end and connector end are one-piece members that include a plurality of gear teeth along one side of both the block end and connector end. A plurality of protrusions or pins connect the tongues to the receptacles. The links are adapted to be pivoted by a driving gear between a driving orientation of the links with the driving face engaging the driven face of an adjacent link in a forward direction.

A rigid drive chain comprises a plurality of links connected end-to-end. The links have a block end including a pair of receptacles, a driving face and a driven face. The links have a connector end including a tongue. The block end and connector end are one-piece members that include a plurality of gear teeth along one side of both the block end and connector end. A plurality of protrusions or pins connect the tongues to the receptacles. The links are adapted to be pivoted by a driving gear between a driving orientation of the links with the driving face engaging the driven face of an adjacent link in a forward direction.