Abstract: An in-line jack includes a body, an extendable shaft, drive mechanics, and a motor. The body has first and second distal ends. The extendable shaft is movably disposed within the body and has a distal end extending out of the second distal end of the body. The drive mechanics are disposed within the body and are adapted to move the extendable shaft with respect to the body. The motor is mounted at the first distal end of the body and is adapted to selectively drive the drive mechanics. A coupling mechanism can be provided to selectively alternately couple: (i) a planetary gear system associated with the motor to a drive shaft of a jack screw assembly and (ii) a manual crankshaft to the drive shaft to operate the jack manually. The body and the motor each has a generally cylindrical outer surface with an outer diameter equal to or less than about three inches. The body, the jack screw assembly, the coupling mechanism, the planetary gear system, and the motor are substantially axially aligned with each other.

Abstract: An in-line jack includes a body, an extendable shaft, drive mechanics, and a motor. The body has first and second distal ends. The extendable shaft is movably disposed within the body and has a distal end extending out of the second distal end of the body. The drive mechanics are disposed within the body and are adapted to move the extendable shaft with respect to the body. The motor is mounted at the first distal end of the body and is adapted to selectively drive the drive mechanics. A coupling mechanism can be provided to selectively alternately couple: (i) a planetary gear system associated with the motor to a drive shaft of a jack screw assembly and (ii) a manual crankshaft to the drive shaft to operate the jack manually. The body and the motor each has a generally cylindrical outer surface with an outer diameter equal to or less than about three inches. The body, the jack screw assembly, the coupling mechanism, the planetary gear system, and the motor are substantially axially aligned with each other.

Abstract: An in-line jack includes a body, an extendable shaft, drive mechanics, and a motor. The body has first and second distal ends. The extendable shaft is movably disposed within the body and has a distal end extending out of the second distal end of the body. The drive mechanics are disposed within the body and are adapted to move the extendable shaft with respect to the body. The motor is mounted at the first distal end of the body and is adapted to selectively drive the drive mechanics. A coupling mechanism can be provided to selectively alternately couple: (i) a planetary gear system associated with the motor to a drive shaft of a jack screw assembly and (ii) a manual crankshaft to the drive shaft to operate the jack manually. The body and the motor each has a generally cylindrical outer surface with an outer diameter equal to or less than about three inches. The body, the jack screw assembly, the coupling mechanism, the planetary gear system, and the motor are substantially axially aligned with each other.

Abstract: The wheel-less camper comprises at least one jack mounted to the camper, the first jack being disposed inside the first sidewall. The camper may include a second jack, the second jack being disposed inside the second sidewall. Each wall of the camper may have an inner wall and an outer wall, the first jack being disposed between the inner and outer wall of the first sidewall and the second jack being disposed between the inner wall and outer wall of the second sidewall. The camper may also include third jack and a fourth jack. In one embodiment, the inner walls are omitted. In another embodiment, the inner wall includes a bulged area or an unevenness to accommodate one or more of the jacks. In another embodiment, the first jack may be a pull-out jack that is movable between a first position in which it is disposed inside the first sidewall and a second position in which it extends out from the first sidewall. The camper may include a second pull-out jack.

Abstract: An in-line jack includes a body, an extendable shaft, drive mechanics, and a motor. The body has first and second distal ends. The extendable shaft is movably disposed within the body and has a distal end extending out of the second distal end of the body. The drive mechanics are disposed within the body and are adapted to move the extendable shaft with respect to the body. The motor is mounted at the first distal end of the body and is adapted to selectively drive the drive mechanics. A coupling mechanism can be provided to selectively alternately couple: (i) a planetary gear system associated with the motor to a drive shaft of a jack screw assembly and (ii) a manual crankshaft to the drive shaft to operate the jack manually. The body and the motor each has a generally cylindrical outer surface with an outer diameter equal to or less than about three inches. The body, the jack screw assembly, the coupling mechanism, the planetary gear system, and the motor are substantially axially aligned with each other.

Abstract: The wheel-less camper comprises at least one jack mounted to the camper, the first jack being disposed inside the first sidewall. The camper may include a second jack, the second jack being disposed inside the second sidewall. Each wall of the camper may have an inner wall and an outer wall, the first jack being disposed between the inner and outer wall of the first sidewall and the second jack being disposed between the inner wall and outer wall of the second sidewall. The camper may also include third jack and a fourth jack. In one embodiment, the inner walls are omitted. In another embodiment, the inner wall includes a bulged area or an unevenness to accommodate one or more of the jacks. In another embodiment, the first jack may be a pull-out jack that is movable between a first position in which it is disposed inside the first sidewall and a second position in which it extends out from the first sidewall. The camper may include a second pull-out jack.

Abstract: The wheel-less camper comprises at least one jack mounted to the camper, the first jack being disposed inside the first sidewall. The camper may include a second jack, the second jack being disposed inside the second sidewall. Each wall of the camper may have an inner wall and an outer wall, the first jack being disposed between the inner and outer wall of the first sidewall and the second jack being disposed between the inner wall and outer wall of the second sidewall. The camper may also include third jack and a fourth jack. In one embodiment, the inner walls are omitted. In another embodiment, the inner wall includes a bulged area or an unevenness to accommodate one or more of the jacks. In another embodiment, the first jack may be a pull-out jack that is movable between a first position in which it is disposed inside the first sidewall and a second position in which it extends out from the first sidewall. The camper may include a second pull-out jack.

Abstract: The wheel-less camper comprises at least one jack mounted to the camper, the first jack being disposed inside the first sidewall. The camper may include a second jack, the second jack being disposed inside the second sidewall. Each wall of the camper may have an inner wall and an outer wall, the first jack being disposed between the inner and outer wall of the first sidewall and the second jack being disposed between the inner wall and outer wall of the second sidewall. The camper may also include third jack and a fourth jack. In one embodiment, the inner walls are omitted. In another embodiment, the inner wall includes a bulged area or an unevenness to accommodate one or more of the jacks. In another embodiment, the first jack may be a pull-out jack that is movable between a first position in which it is disposed inside the first sidewall and a second position in which it extends out from the first sidewall. The camper may include a second pull-out jack.

Abstract: A compact chain cutting apparatus for automatically shearing and opening a chain link of a selected thickness in one operation is disclosed. The apparatus includes a housing, a first shearing member, a second shearing member, and an electro-hydraulic actuator system. The first shearing member is mounted to the housing. The second shearing member is pivotally mounted to the housing for movement to exert, in cooperation with the first shearing member, shearing and bending forces upon the chain link. The electro-hydraulic actuator system cooperates with the second shearing member to move automatically the second shearing member to shear and to bend the chain link, thereby defining an opening in the chain link greater than the thickness of the link.

Abstract: A compact chain cutting apparatus for automatically shearing and opening a chain link of a selected thickness in one operation is disclosed. The apparatus includes a housing, a first shearing member, a second shearing member, and an electro-hydraulic actuator system. The first shearing member is mounted to the housing. The second shearing member is pivotally mounted to the housing for movement to exert, in cooperation with the first shearing member, shearing and bending forces upon the chain link. The electro-hydraulic actuator system cooperates with the second shearing member to move automatically the second shearing member to shear and to bend the chain link, thereby defining an opening in the chain link greater than the thickness of the link.