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A handle unit includes a handle, a connector, a bolt, a latch, a button and a spring. The handle includes two lugs. The connector includes a lug. The lug of the connector is located between the lugs of the handle. The bolt is inserted in the lugs so that the handle is pivotally connected to the conn

A handle unit includes a handle, a connector, a bolt, a latch, a button and a spring. The handle includes two lugs. The connector includes a lug. The lug of the connector is located between the lugs of the handle. The bolt is inserted in the lugs so that the handle is pivotally connected to the connector. The latch is connected to the bolt and located in a non-circular opening of the second lug of the handle. The button is connected to the bolt. The spring is compressed between the button and the first lug of the handle to make the latch partially enter a non-circular opening of the connector to position the connector relative to the handle. The button can be pressed to make the latch leave the non-circular opening of the connector.

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1. A handle unit comprising: a handle including a first lug with a countersink and a second lug with a non-circular opening defined therein;a connector including a lug with a non-circular opening defined therein, wherein the lug of the connector is located between the lugs of the handle;a bolt inser

1. A handle unit comprising: a handle including a first lug with a countersink and a second lug with a non-circular opening defined therein;a connector including a lug with a non-circular opening defined therein, wherein the lug of the connector is located between the lugs of the handle;a bolt inserted in the lugs so that the handle is pivotally connected to the connector;a latch connected to the bolt and located in the non-circular opening of the handle;a button connected to the bolt; anda spring compressed between the button and an annular shoulder formed in the countersink to make the latch partially enter the non-circular opening of the connector to position the connector relative to the handle, wherein the button can be pressed to make the latch leave the non-circular opening of the connector to allow rotation of the connector on the handle. 2. The handle unit according to claim 1, wherein the non-circular opening of the handle includes a circular aperture and cutouts in communication with the circular aperture thereof, wherein the non-circular opening of the connector includes a circular aperture and cutouts in communication with the circular aperture of the connector, wherein the latch includes ribs located in the cutouts of the handle and movable into the cutouts of the connector. 3. The handle unit according to claim 2 further including at least one spring-biased detent connected to the first lug of the handle, wherein the lug of the connector includes apertures for receiving the spring-biased detent to indicate that the ribs of the latch located in the cutouts of the handle are ready to partially enter the cutouts of the connector. 4. The handle unit according to claim 3, wherein the spring-biased detent includes a ball located against the lug of the connector and a spring compressed between the ball and the first lug of the handle. 5. The handle unit according to claim 1, wherein the handle includes a chamber defined therein. 6. The handle unit according to claim 5 further including a tail element for closing the chamber of the handle. 7. The handle unit according to claim 6, wherein the handle includes a thread formed thereon, wherein the tail element includes a thread engaged with the thread of the handle. 8. The handle unit according to claim 6, wherein the tail element includes a chamber defined therein. 9. The handle unit according to claim 8 further including a cover for closing the chamber of the tail element. 10. The handle unit according to claim 9, wherein the cover includes two flanges formed thereon, wherein the tail element includes two grooves for receiving the flanges. 11. The handle unit according to claim 10, wherein the cover includes a boss formed thereon, wherein the tail element includes a recess for receiving the boss to keep the cover on the tail element.