Abstract: A length-adjustable handle assembly for a baggage cart integrated with a suitcase, includes a handle for gripping by a user, at least an outer tube fixedly connected to the suitcase and having a plurality of locking holes along its length, an inner tube fixedly secured to the handle and telescopically movable within the outer tube, an operating sleeve fixedly connected to the inner tube and having holes formed in its wall for receiving steel balls, an operating means movable between a first position and a second position in respective to the inner tubes, a plunger with a flange surface fixedly connected to the operating means and movable within the operating sleeve. When the operating means is operated to the first position, the flange surface of the plunger will contact the steel balls and force at least parts of them to fixedly engage with the holes of the outer tube when the holes of the operating sleeve are aligned with the holes of the outer tubes.

Abstract: A handle of a telescopic handle assembly for a baggage cart includes at least a handle seat fixedly connected to an inner tube of the telescopic handle assembly, an actuator rotatably received within a mounting hole of the handle seat, a grip portion formed by an assembly of two grip members with semi-circular peripheries and being fixedly connected to the actuator so that a rotation of the grip portion can rotate the actuator, and an operating block which has at least a portion being forcedly in contact with a portion of the actuator so that a rotation of the actuator can cause a lifting movement of the operating block from a position to a selected position. The operating block is fixedly connected to a locking means for locking the inner tube with an outer tube of the telescopic handle assembly. Once the operating block is lifted to the selected position, the locking of the locking means for locking the inner tube with the outer tube is unlocked.